Research Interests:
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- Nonlinear Analysis:
Variational Principles, Critical Point Theory,
Variational and Hemivariational Inequalities,
Non-Convex Optimization, Differential Topology;
- Partial Differential Equations :
Nonlinear Elliptic Boundary Value Problems,
Flow-Invariance, Phase-Field Systems;
- Applied Mathematics:
Geometric Control Theory,
Non-Smooth Mechanics,
Dynamical Systems.
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Educational History:
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- Ph.D. of Mathematics, "Al. I. Cuza" University, Iasi, Romania,
1978,
Dissertation: Methods of Differential Topology with Application
to the Cohomology of Differential Manifolds.
- Diploma in Mathematics, "Al. I. Cuza" University, Iasi, Romania, 1972.
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Employment History:
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- Professor, Department of Mathematics, University of Perpignan, France,
2000 - present.
- Professor, Department of Mathematics, University of Iasi, Romania,
1996 - 2000.
- Associate Professor, Department of Mathematics, University of Iasi,
Romania, 1990-1996.
- Lecturer, Department of Mathematics, University of Iasi, Romania,
1978-1990.
- Assistant Professor, Department of Mathematics, Technical University
of Iasi, Romania, 1972-1978.
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Award:
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- "Simion Stoilov" Award of Romanian Academy, Bucharest, Romania, 1991.
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Editorials: |
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- Associate editor for the following international Journals of Mathematics:
- Abstract and Applied Analysis
- Advances in Nonlinear Analysis and Applications
- AIMS Mathematics
- Applicable Analysis
- Asian-European Journal of Mathematics
- Boundary Value Problems
- Demonstratio Mathematica (member of Editorial Advisory Board)
- Discrete and Continuous Dynamical Systems - Series S
- IAENG International Journal of Applied Mathematics
- International Journal of Applied Mathematics
- International Journal of Differential Equations and Applications
- Journal of Advanced Research in Differential Equations
- Journal of Function Spaces
- Journal of Global Optimization (until October 2016)
- Journal of Informatics and Mathematical Sciences
- Journal of Modern Mathematics Frontier
- Mathematics Applied in Science and Technology
- Minimax Theory and its Applications
- Nonlinear Analysis (until May 2020)
- Numerical Functional Analysis and Optimization
- PanAmerican Mathematical Journal
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Editorial Works: |
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- ``Handbook of Nonconvex Analysis and Applications'', Edited by
David Yang Gao and Dumitru Motreanu, International
Press of Boston, Sommerville, USA, 2010.
- Applicable Analysis, Volume 89, Number 2, February 2010, Special Issue:
Nonsmooth Variational Problems
(Guest Editors: Siegfried Carl, Robert P. Gilbert and Dumitru Motreanu).
- Discrete and Continuous Dynamical Systems, 2011, Special Issue
``Variational Methods in Nonlinear Elliptic Equations''
(Guest Editors: Siegfried Carl, Salvatore A. Marano and Dumitru Motreanu).
- Boundary Value Problems, 2014, Special Issue
``Recent Advances in Boundary Value Problems''
(Guest Editors: Ravi P. Agarwal and Dumitru Motreanu).
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Reviewer:
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- Mathematical Reviews;
- Zentralblatt fur Mathematik.
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Visiting Positions Held: |
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Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
(March 1-9, 2010);
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Universidade Federal de Juiz de Fora, Brazil (April 1- 30, 2012);
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Institute of Mathematics of Czech Academy, Prague, Czech Republic (February 18- 29, 2012);
- Rochester Institute of Technology, Rochester, U.S.A. (August 27- September 2, 2011);
- Institute of Mathematics of Czech Academy, Prague, Czech Republic (February 13- 20, 2011);
- University of Reggio Calabria, Italy
(December 7-December 16, 2010);
- Guangxi University for Nationalities, Nanning, China
(October 17-October 28, 2010);
- Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
(May 29-June 5, 2010);
- University of Reggio Calabria, Reggio Calabria, Italy
(October 2-15, 2009);
- Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
(July 11-18, 2009);
- Academy of Mathematics and Systems Science, Chinese Academy of Sciences,
Beijing, China (June 8-June 14, 2009);
- University of Prague, Czech Republic (October 1- 10, 2008);
- Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
(2005, 2006, October 27 - November 3, 2007);
- Missouri-Rolla University, Rolla, U.S.A. (2005);
- Mathematisches Forschungsinstitut Oberwolfach, Germany (2003);
- Royal Military College of Canada, Kingston, Canada (2003);
- University of Prague, Czech Republic (2000, 2001);
- University of Limoges, France (2000);
- University of Perpignan, France (1999);
- University of Warsaw, Poland (1999);
- University of Catania, Italy (1998, 1999);
- University of La Reunion, France (1998);
- Ohio University, Athens, U.S.A. (1997, 2001);
- University of Namur, Belgium (1996);
- University of Trento, Italy (1995, 1996);
- University of Pau, France (1994);
- University of Thessaloniki, Greece (1993-1995);
- University of Lublin, Poland (1991);
- University of Freiburg, Germany (1984).
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Publications:
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I. Books Authored:
- D. Motreanu,
Nonlinear differential problems with smooth and
nonsmooth constraints, Mathematical Analysis and Its Applications,
Elsevier/Academic Press, Amsterdam, 2018, xvi+345 pp.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Topological and Variational Methods with Applications to
Nonlinear Boundary Value Problems,
Springer, New York, 2014,
459 pp.
- S. Carl, V. K. Le and D. Motreanu,
Nonsmooth Variational Problems and Their Inequalities.
Comparison Principles and Applications,
Springer Monographs in Mathematics, Springer, New York, 2007,
410 pp.
- D. Goeleven, D. Motreanu, Y. Dumont and M. Rochdi,
Variational and Hemivariational Inequalities, Theory, Methods
and Applications,
Volume I: Unilateral Analysis and Unilateral Mechanics, Kluwer
Academic Publishers, Dordrecht / Boston / London, 2003, 424pp.
- D. Goeleven and D. Motreanu,
Variational and Hemivariational Inequalities, Theory, Methods
and Applications,
Volume II: Unilateral Problems, Kluwer Academic Publishers, Dordrecht
/ Boston / London, 2003, 368pp.
- D. Motreanu and V. Radulescu,
Variational and Non-variational
Methods in Nonlinear Analysis and Boundary Value Problems, Kluwer
Academic Publishers, Dordrecht / Boston / London, 2003, 388 pp.
- D. Motreanu and N. H. Pavel,
Tangency, Flow-Invariance for Differential Equations
and Optimization Problems,
Marcel Dekker, Inc., New York, Basel, 1999, x+479pp.
- D. Motreanu and P. D. Panagiotopoulos,
Minimax Theorems and Qualitative Properties of the
Solutions of Hemivariational Inequalities, Kluwer Academic Publishers,
Dordrecht / Boston / London, 1999, xviii+309pp
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II. Papers in Refereed Journals
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D. Motreanu and E. Tornatore,
Dirichlet problems with anisotropic
principal part involving unbounded coefficients,
Electron. J. Differential Equations 2024, Paper No. 11, 13 pp.
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D. Motreanu,
Hemivariational inequalities with competing operators,
Commun. Nonlinear Sci. Numer. Simul. 130 (2024), Paper No. 107741.
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M. Galewski and D. Motreanu,
On variational competing (p,q)-Laplacian Dirichlet problem with gradient depending weight,
Appl. Math. Lett. 148 (2024), Paper No. 108881.
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L. Gambera, S. A. Marano, and D. Motreanu,
Quasilinear Dirichlet systems with competing operators and convection,
J. Math. Anal. Appl. 530 (2024) 127718.
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M. Galewski and D. Motreanu,
On variational approach to fourth-order problems with unbounded weight,
Math. Meth. Appl. Sci. 2023, 1–13.
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Z. Liu, D. Motreanu, and S. Zeng,
Multiple solutions for a Kirchhoff-type problem with vanishing nonlocal term
and Fractional p-Laplacian,
Front. Math. 2023, 18(5): 1067–1082.
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D. Motreanu,
Quasilinear differential inclusions driven by degenerated p-Laplacian with weight,
Stud. Univ. Babes-Bolyai Math. 68 (2023), no. 1, 77--91.
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D. Motreanu,
Nonhomogeneous Dirichlet problems with unbounded coefficient in the
principal part the principal part,
Axioms 20222022, 11 (2023), No. 12, 739.
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D. Motreanu,
An approximation approach for solving degenerated quasilinear problems,
Discrete Contin. Dyn. Syst. Ser. S 16 (2023), no. 1, 89–103.
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D. Motreanu and E. Tornatore,
Nonhomogeneous degenerate quasilinear problems with convection,
Nonlinear Anal. Real World Appl. 71 (2023), Paper No. 103800.
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S. Ghosh and D. Motreanu,
Infinitely many large solutions to a variable order nonlocal singular equation,
Fract. Calc. Appl. Anal. 25 (2022), no. 2, 822–839.
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S. Zeng, D. Motreanu, and A. Khan,
Evolutionary Quasi-Variational-Hemivariational Inequalities I: Existence and Optimal Control,
J. Optim. Theory Appl. 193 (2022), no. 1-3, 950–970.
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J. Cen, A. Khan, D. Motreanu, and S. Zhang,
Inverse problems for generalized quasi-variational inequalities with application to elliptic mixed boundary value systems,
Inverse Problems 38 (2022), no. 6, Paper No. 065006, 28 pp.
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D. Motreanu,
Equations with s-fractional (p,q)-Laplacian and convolution,
Minimax Theory Appl. 7 (2022), no. 1, 159–172.
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M. Z. Nashed and D. Motreanu,
Degenerated (p,q)-Laplacian With Weights and Related Equations With Convection,
Numer. Funct. Anal. Optim. 42 (2021), no. 15, 1757--1767.
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D. Motreanu and V. V. Motreanu,
Nonstandard Dirichlet problems with competing (p,q)-Laplacian, convection, and convolution,
Stud. Univ. Babes-Bolyai Math. 66 (2021), no. 1, 95–103.
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D. Motreanu,
Constrained problems via sub-supersolution,
Appl. Anal. Optim. 5 (2021), no. 2, 239–249.
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Z. Liu, D. Motreanu and S. Zeng,
Generalized penalty and regularization method
for differential variational-hemivariational inequalities,
SIAM J. Optim. 31 (2021), no. 2, 1158–1183.
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D. Motreanu, C. Vetro and F. Vetro,
The effects of convolution and gradient dependence on a parametric Dirichlet problem,
Partial Differ. Equ. Appl. 1 (2020), no. 1, Paper No. 3.
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G. Marino and D. Motreanu,
Existence and L-estimates for elliptic equations involving convolution,
Comput. Math. Methods 2 (2020), no. 5, e1103, 15 pp.
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D. Motreanu,
Quasilinear Dirichlet problems with competing operators and convection,
Open Math. 18 (2020), no. 1, 1510–1517.
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Y. Liu, Z. Liu and D. Motreanu,
Existence and approximated results of solutions
for a class of nonlocal elliptic variational-hemivariational inequalities,
Math. Methods Appl. Sci. 43 (2020), no. 17, 9543–9556.
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D. Motreanu, V.T. Nguyen and S. Zeng,
Existence of solutions for implicit obstacle
problems of fractional Laplacian type involving set-valued operators,
J. Optim. Theory Appl. 187 (2020), no. 2, 391–407.
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U. Guarnotta, S.A. Marano and D. Motreanu,
On a singular Robin problem with convection terms,
Adv. Nonlinear Stud. 20 (2020), no. 4, 895–909.
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D. Motreanu and V.V. Motreanu,
Non-variational elliptic equations involving (p,q)-Laplacian, convection and convolution,
Pure Appl. Funct. Anal. 5 (2020), no. 5, 1205–1215.
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Y. Liu, Z. Liu and D. Motreanu,
Differential inclusion problems with convolution and discontinuous nonlinearities,
Evol. Equ. Control Theory 9 (2020), no. 4, 1057–1071.
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Z. Liu, R. Livrea, D. Motreanu and S. Zeng,
Variational differential inclusions without ellipticity condition,
Electron. J. Qual. Theory Differ. Equ. 2020, Paper No. 43, 17 pp.
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O.H. Miyagaki, D. Motreanu and F.R. Pereira,
Multiple solutions for a fractional elliptic problem with critical growth,
J. Differential Equations 269 (2020), no. 6, 5542-5572.
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D. Motreanu, A. Sciammetta and E. Tornatore,
A sub-supersolution approach for Neumann boundary value problems with gradient dependence,
Nonlinear Anal. Real World Appl. 54 (2020), 103096.
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Y. Bai, D. Motreanu and S. Zeng,
Continuity results for parametric nonlinear singular Dirichlet problems,
Adv. Nonlinear Anal. 9 (2020), no. 1, 372–387.
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D. Motreanu and Z. Peng,
Doubly coupled systems of elliptic hemivariational inequalities: existence and location,
Comput. Math. Appl. 77 (2019), no. 11, 3001–3009.
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L. Lu, Z. Liu and D. Motreanu,
Existence results of semilinear differential variational inequalities without compactness,
Optimization 68 (2019), no. 5, 1017–1035.
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D. Motreanu and P. Winkert,
Existence and asymptotic properties for quasilinear elliptic equations with gradient dependence,
Appl. Math. Lett. 95 (2019), 78–84.
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Z. Liu, S. Zeng and D. Motreanu,
Positive solutions for nonlinear singular elliptic equations
of p-Laplacian type with dependence on the gradient,
Calc. Var. Partial Differential Equations 58 (2019), no. 1, Art. 28, 22 pp.
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D. Motreanu and Z. Peng,
Doubly coupled systems of parabolic hemivariational inequalities:
existence and extremal solutions,
Nonlinear Anal. 181 (2019), 101–118.
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Z. Liu, S. Zeng and D. Motreanu,
Partial differential hemivariational inequalities,
Adv. Nonlinear Anal. 7 (2018), no. 4, 571–586.
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Z. Liu, D. Motreanu and S. Zeng,
Nonlinear evolutionary systems driven by mixed
variational inequalities and its applications,
Nonlinear Anal. Real World Appl. 42 (2018), 409–421.
- Z. Liu, D. Motreanu and S. Zeng,
Nonlinear evolutionary systems driven by quasi-hemivariational inequalities,
Math. Methods Appl. Sci. 41 (2018), no. 3, 1214-1229.
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D. Motreanu, A. Moussaoui and D.S. Pereira,
Multiple solutions for nonvariational quasilinear elliptic systems,
Mediterr. J. Math. 15 (2018), no. 3, Art. 88, 14 pp.
- Z. Liu and D. Motreanu,
Inclusion problems via subsolution-supersolution
method with applications to hemivariational inequalities,
Appl. Anal. 97 (2018), no. 8, 1454-1465.
- L. Gang, D. Motreanu, H. Wu and Q. Zhang,
Multiple solutions with constant sign for a (p,q)-elliptic system
Dirichlet problem with product nonlinear term,
Bound. Value Probl. 2018, Paper No. 67, 16 pp.
- A.A. Khan and D. Motreanu,
Inverse problems for quasi-variational inequalities,
J. Global Optim. 70 (2018), no. 2, 401-411.
- Z. Liu, D. Motreanu and S. Zeng,
On the well-posedness of differential mixed quasi-variational-inequalities,
Topol. Methods Nonlinear Anal. 51 (2018), no. 1, 135-150.
- D. Motreanu, V. V. Motreanu and A. Moussaoui,
Location of nodal solutions for quasilinear elliptic equations with gradient dependence,
Discrete Contin. Dyn. Syst. Ser. S 11 (2018), no. 2, 293-307.
- D. Motreanu, C. Vetro and F. Vetro,
Systems of quasilinear elliptic equations with dependence on the gradient via subsolution-supersolution method,
Discrete Contin. Dyn. Syst. Ser. S 11 (2018), no. 2, 309-321.
- S. Carl and D. Motreanu,
Extremal solutions for quasilinear parabolic systems in trapping regions,
Pure Appl. Funct. Anal. 3 (2018), no. 1, 57-74.
- Z. Liu, S. Zeng and D. Motreanu,
Partial differential hemivariational inequalities,
Adv. Nonlinear Anal. 7 (2018), no. 4, 571–586.
- D. Motreanu and E. Tornatore,
Location of solutions for quasi-linear elliptic equations with general gradient dependence,
Electron. J. Qual. Theory Differ. Equ. 2017, Paper No. 87, 10 pp.
- D. Motreanu, K. Moussaoui and Z. Zhang,
Positive solutions for singular elliptic systems with convection term,
J. Fixed Point Theory Appl. 19 (2017), no. 3, 2165–2175.
- S. Carl and D. Motreanu,
Extremal Solutions for Nonvariational Quasilinear Elliptic Systems via Expanding Trapping Regions
,
Monatshefte für Mathematik 182 (2017), 801–821.
- D. Motreanu and V. V. Motreanu,
Generic existence of nondegenerate homoclinic solutions
,
Lobachevskii Journal of Mathematics 38 (2017), 322–329.
- D. Motreanu and M. Tanaka,
Existence of positive solutions for nonlinear elliptic equations with convection terms
,
Nonlinear Analysis 152 (2017), 38–60.
- Z. D. Motreanu, C. Vetro and F. Vetro,
A parametric Dirichlet problem for systems of quasilinear
elliptic equations with gradient dependence
,
Numerical Functional Analysis and Optimization 37 (2016), 1551-1561.
- D. Averna, D. Motreanu and E. Tornatore,
Existence and asymptotic properties for quasilinear elliptic equations with gradient dependence
,
Applied Mathematics Letters 61 (2016), 102-107.
- Q. Zhang and D. Motreanu, Existence and blow-up rate of large solutions of
p(x)-Laplacian equations with large perturbation and gradient terms,
Advances in Differential Equations 21 (2016), 699–-734.
- Z. Liu, S. Zeng and D. Motreanu, Evolutionary Problems Driven by Variational Inequalities,
Journal of Differential Equations 260 (2016), 6787–-6799.
- D. Motreanu and M. Tanaka,
On a positive solution for (p,q)-Laplace equation with indefinite weight,
Minimax Theory and its Applications, Minimax Theory and its Applications 1 (2016), 1–20.
- G. Bonanno, P. Candito and D. Motreanu,
A coincidence point theorem for sequentially continuous mappings,
Journal of Mathematical Analysis and Applications 435 (2016), 606-615.
- A. Khan and D. Motreanu,
Existence Theorems for Elliptic and Evolutionary Variational and Quasi-Variational Inequalities,
J. Optim. Theory Appl. 167 (2015), 1136-1161.
- Z. Liu, X. Li and D. Motreanu,
Approximate controllability for nonlinear evolution hemivariational inequalities in Hilbert spaces,
SIAM Journal on Control and Optimization 53 (2015), 3228-3244
- F. Faraci, D. Motreanu and D. Puglisi,
Positive solutions of quasi-linear elliptic equations with dependence on the gradient,
Calc. Var. Partial Differential Equations 54 (2015), 525–538.
- S. Carl and D. Motreanu,
Multiple solutions for elliptic systems via trapping regions and related nonsmooth potentials,
Applicable Analysis 94 (2015), 1594–1613.
- V. Goldshtein, D. Motreanu and V. V. Motreanu,
Non-homogeneous Dirichlet boundary value problems in weighted Sobolev spaces,
Complex Variables and Elliptic Equations 60 (2015), 372–391.
- D. Motreanu and M. Tanaka,
Multiple existence results of solutions for quasilinear elliptic
equations with a nonlinearity depending on a parameter,
Annali di Matematica Pura ed Applicata 193 (2014), 1255–-1282..
- L. F. O. Faria, O. H. Miyagaki and D. Motreanu,
Comparison and positive solutions for problems with (p,q)-Laplacian and convection term,
Proceedings of the Edinburgh Mathematical Society 57 (2014), 687–-698..
- D. Motreanu and A. Moussaoui,
An existence result for a class of quasilinear singular competitive elliptic systems,
Applied Mathematics Letters 38 (2014), 33-37.
- D. Motreanu and A. Moussaoui,
A quasilinear singular elliptic system without cooperative structure,
Acta Mathematica Scientia 34 (2014), 905-916 .
- G. Barletta, P. Candito and D. Motreanu,
Constant sign and sign changing solutions for quasilinear elliptic
equations with Neumann boundary condition,
J. Convex Anal. 21 (2014), 53-66.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Existence and nonexistence of positive solutions for parametric Neumann problems with $p$-Laplacian,
Tohoku Mathematical Journal 66 (2014), 137-153.
- D. Motreanu and V. V. Motreanu,
Elliptic problems with nonhomogeneous boundary condition and derivatives of
nonlinear terms, Boundary Value Problems, 2014, 2014:6 doi:10.1186/1687-2770-2014-6.
- L. F. O. Faria, O. H. Miyagaki, D. Motreanu and M. Tanaka,
Existence results for nonlinear elliptic equations with Leray–Lions operator
and dependence on the gradient, Nonlinear Analysis 96 (2014), 154–166.
- S. A. Marano, D. Motreanu and D. Puglisi,
Multiple solutions to a Dirichlet eigenvalue problem with p-Laplacian,
Topological Methods in Nonlinear Analysis 42 (2013), 277–291.
- D. Motreanu and V. V. Motreanu,
Coercivity Properties for sequences of lower semicontinuous functions on metric spaces,
Abstract and Applied Analysis, Volume 2013, Article ID 268650.
- D. Motreanu and A. Moussaoui,
Existence and boundedness of solutions for a singular cooperative quasilinear elliptic system,
Complex Variables and Elliptic Equations (2013), DOI:10.1080/17476933.2012.744404.
- D. Motreanu,
Solvability of an anisotropic hyperbolic problem,
Dynamic Systems and Applications 22 (2013), 543-556.
- D. Motreanu and M. Tanaka,
Generalized eigenvalue problems of nonhomogeneous elliptic operators and their application,
Pacific Journal of Mathematics 265 (2013), no. 1, 151-184.
- A. Khan and D. Motreanu,
Local minimizers versus X-local minimizers, Optimization Letters 7 (2013), no. 5, 1027–1033.
- G. Bonanno, D. Motreanu and P. Winkert,
Boundary value problems with nonsmooth potential, constraints and parameteres,
Dynamic Systems and Applications 22 (2013), 385-396.
- A. Iannizzotto, S. A. Marano and D. Motreanu,
Positive, negative, and nodal solutions to elliptic differential inclusions depending on a parameter,
Advanced Nonlinear Studies 13 (2013), 431–445.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
On resonant Neumann problems, Mathematische Annalen 354 (2012), 1117-1145.
- S. Miyajima, D. Motreanu and M. Tanaka,
Multiple existence results of solutions for the Neumann problems via super-
and sub-solutions,
Journal of Functional Analysis, Journal of Functional Analysis 262 (2012), 1921–1953.
- D. Motreanu, Three solutions with precise sign
properties for systems of quasilinear elliptic equations,
Continuous and Discrete Dynamical Systems, Series S 5 (2012), 831 - 843.
- D. Motreanu and M. Tanaka,
Existence of solutions for quasilinear elliptic equations
with jumping nonlinearities under the Neumann boundary condition,
Calculus of Variations and Partial Differential Equations 43 (2012), 231-264.
- D. Motreanu, D.O'Regan and N. S. Papageorgiou,
A unified treatment using critical point methods
of the existence of multiple solutions for superlinear
and sublinear Neumann problems,
Communications on Pure and Applied Analysis 10 (2011), 1791 - 1816..
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Multiple constant sign and nodal solutions for
nonlinear Neumann eigenvalue problems
, Annali della Scuola Normale Superiore di Pisa, Classe di Scienze 10 (2011), 729-755.
- D. Motreanu and P. Winkert,
On the Fucik spectrum for the p-Laplacianwith Robin boundary condition,
Nonlinear Analysis 74 (2011), 4671-4681.
- P. Candito, R. Livrea and D. Motreanu,
Bounded Palais-Smale sequences for non-diferentiable functions,
Nonlinear Analysis 74 (2011), 5446-5454.
- D. Motreanu and N. S. Papageorgiou,
Multiple solutions for nonlinear Neumann problems driven
by a nonhomogeneous differential operator,
Proceedings of the American Mathematical Society 139 (2011), 3527-3535.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Nonautonomous resonant periodic systems with indefinite linear part and a
nonsmooth potential,
Communications in Pure and Applied Analysis 11 (2011), 1401-1414.
- G. Bonanno, D. Motreanu and P. Winkert,
Variational-hemivariational inequalities with small
perturbations of nonhomogeneous Neumann boundary conditions,
Journal of Mathematical Analysis and Applications J. Math. Anal. Appl. 381 (2011) 627–637.
- D. Motreanu and Z. Zhang,
Constant sign and sign changing solutions for systems of quasilinear
elliptic equations, Set-Valued and Variational Analysis 19 (2011), 255–269.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
On p-Laplace equations with concave terms and asymmetric perturbations
, Proceedings A of The Royal Society of Edinburgh 141A (2011), 171-192.
- D. Motreanu and P. Winkert,
Variational-hemivariational inequalities with nonhomogeneous
Neumann boundary condition,
Le Matematiche Vol. LXV (2010), 109–119.
- D. Motreanu and M. Tanaka,
Sign-changing and constant-sign solutions for $p$-Laplacian
problems with jumping nonlinearities,
Journal of Differential Equations 249 (2010), 3352-3376.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Multiple solutions for resonant nonlinear periodic equations,
Nonlinear Differential Equations and Applications 17 (2010), 535-557.
- S. Carl and D. Motreanu,
Multiple and sign-changing solutions for the multivalued p-Laplacian
equation , Mathematische Nachrichten 283 (2010), 965-981.
- Z. Liu and D. Motreanu,
A class of variational-hemivariational inequalities of elliptic type
, Nonlinearity 23 (2010), 1741-1752.
- D. Motreanu, V. V. Motreanu and M. Turinici,
Corciveness property for conical nonsmooth functionals,
Journal of Optimization Theory and Applications 145 (2010), 148-163.
- S. Carl and D. Motreanu,
Sign-changing solutions for nonlinear elliptic
problems depending on parameters,
International Journal of Differential Equations, Volume 2010, 33 pages.
- S. Carl and D. Motreanu,
Directedness of solution set for some quasilinear multi-valued parabolic
problems, Applicable Analysis 89 (2010), 161-174.
- V. K. Le, D. Motreanu and V. V. Motreanu,
On a nonsmooth eigenvalue problem in Orlicz-Sobolev spaces,
Applicable Analysis 89 (2010), 229-242.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Existence and multiplicity of solutions for asymptotically linear,
noncoercive elliptic equations,
Monatshefte fuer Mathematik 159 (2010), 59-80.
- D. Motreanu and K. Perera,
Multiple nontrivial solutions for Neumann $p$-Laplacian systems,
Topological Methods in Nonlinear Analysis 34 (2009), 41-48.
- D. Motreanu and N. Tarfulea,
Quasilinear differential
equations in exterior domains with nonlinear boundary conditions and
application,
Electronic Journal of Differential Equations Vol. 2009 (2009), No. 138, pp. 1-13.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Multiple solutions for Dirichlet problems which are superlinear at
+ infinity and (sub)linear at - infinity,
Communications in Applied Analysis 13 (2009), 341-358.
- V. K. Le and D. Motreanu, On nontrivial solutions of
variational-hemivariational inequalities with slowly growing
principal parts, Z. Anal. Anwend. 28 (2009), 277-293.
- S. Heidarkhani and D. Motreanu,
Multiplicity results for a two-point boundary value problem,
PanAmerican Mathematical Journal 19 (2009), 69-78.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Nonlinear Neumann problems near resonance,
Indiana University Mathamatics Journal 58 (2009), 1257-1280.
- S. A. Marano and D. Motreanu,
Critical points of non-smooth functions with a weak compactness
condition, Journal of Mathematical Analysis and Applications 358 (2009),
189-201.
- S. Carl and D. Motreanu,
Comparison principle for quasilinear parabolic inclusions with Clarke's
gradient, Advanced Nonlinear Studies 9 (2009), 69-80.
- O. Carja and D. Motreanu,
Characterization of Lyapunov pairs in the nonlinear case and applications,
Nonlinear Analysis TMA 70 (2009), 352-363.
- S. Carl and D. Motreanu,
General comparison principle for quasilinear elliptic inclusions,
Nonlinear Analysis TMA 70 (2009), 1105-1112.
- S. Carl and D. Motreanu,
Multiple solutions of nonlinear elliptic hemivariational problems,
Pacific Journal of Applied Mathematics 1 (2008), 39-59.
- P. Candito, R. Livrea and D. Motreanu,
Z2-Symmetric critical point theorems for nondifferentiable functionals,
Glasgow Mathematical Journal 50 (2008), 447-466.
- P. Jebelean, D. Motreanu and V. V. Motreanu, A unified approach
for a class of problems involving a pseudo-monotone operator,
Mathematische Nachrichten 281 (2008), 1283-1293.
- D. Averna, S. A. Marano and D. Motreanu,
Multiple solutions for a Dirichlet problem with p-Laplacian,
Bulletin of the Australian Mathematical Society 77 (2008), 285-303.
- S. Carl, V. K. Le and D. Motreanu, Evolutionary
variational-hemivariational inequalities: existence and comparison results,
Journal of Mathematical Analysis and its Applications 345 (2008), 545-558.
- S. Carl and D. Motreanu,
Constant-sign and
sign-changing solutions for nonlinear eigenvalue problems,
Nonlinear Analysis 68 (2008), 2668-2676.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Positive solutions and multiple solutions at non-resonance, resonance and
near resonance for hemivariational inequalities with
p-Laplacian,
Transactions of the American Mathematical Society 360 (2008), 2527-2545.
- S.A. Marano, G. Molica Bisci and D. Motreanu,
Multiple solutions for a class of elliptic hemivariational inequalities,
Journal of Mathematical Analysis and Applications 337 (2008), 85-97.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
A multiplicity theorem for problems with the p-Laplacian,
Nonlinear Analysis 68 (2008), 1016-1027.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
An unified approach for multiple
constant sign and nodal solutions,
Advances in Differential Equations 12 (2007), 1363-1392.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
A degree theoretic approach for multiple
solutions of constant sign for nonlinear elliptic equations,
Manuscripta Mathematica 124 (2007), 507-531.
- A. Kristaly and D. Motreanu,
Nonsmooth Neumann-type problems involving the p-Laplacian,
Numerical Functional Analysis and Optimization 28 (2007), 1309-1326.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Multiple nontrivial
solutions for nonlinear eigenvalue problems,
Proceedings of the American Mathematical Society 135 (2007), 3649-3658.
- S. Carl and D. Motreanu,
Constant-sign and
sign-changing and extremal constant-sign solutions of nonlinear elliptic
problems with supercritical nonlinearities,
Communications on Applied Nonlinear Analysis 14 (2007), 85-100.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Two nontrivial
solutions for periodic systems with indefinite linear part,
Discrete and Continuous Dynamical Systems 19 (2007), 197-210.
- S. Carl and D. Motreanu,
Constant sign and sign-changing solutions of a nonlinear
eigenvalue problem involving the p-Laplacian,
Differential and Integral Equations 20 (2007), 309-324.
- D. Motreanu and N. S. Papageorgiou, Existence and multiplicity of
solutions for Neumann problems, Journal of Differential Equations
232 (2007), 1-35.
- S. Carl and D. Motreanu,
Quasilinear elliptic inclusions of Clarke's gradient type under local
growth condition, Applicable Analysis 85 (2006), 1527-1540.
- O. Carja and D. Motreanu,
Flow-invariance and Lyapunov pairs,
Dynamics of Continuous, Discrete and Impulsive Systems Ser. A Math. Anal. 13B (2006), suppl., 185--198.
- G. Isac and D. Motreanu, A characterization of monotone
nonlinear operators by pseudo-monotonicity, Nonlinear Analysis
Forum 11 (2006), 61-66.
- V. K. Le and D. Motreanu, Some properties of general
minimization problems with constraints, Set-Valued Analysis 14
(2006), 413-424.
- L. Gasinski, D. Motreanu and N. S. Papageorgiou,
Multiplicity of nontrivial solutions for elliptic equations
with nonsmooth potential and resonance at higher eigenvalues,
Proceedings of Indian Academy of Sciences 116 (2006), 233-255.
- R. Livrea, S. Marano and D. Motreanu,
Critical points for
nondifferentiable functions in presence of splitting,
Journal of Differential Equations 226 (2006), 704-725.
- D. Motreanu,
Existence and location of solutions to some eigenvalue Dirichlet
problems,
An. St. Univ. Ovidius Constanta 13 (2005), 101-110.
- D. Motreanu,
Parametric eigenvalue problems with constraints for
variational-hemivariational inequalities,
Nonlinear Analysis 63 (2005), 966-976.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Existence of solutions for strongly nonlinear elliptic
differential inclusions with unilateral constraints,
Advances in Differential Equations 9 (2005), 961-982.
- D. Motreanu and V. Radulescu,
Eigenvalue problems for degenerate nonlinear elliptic
equations in anisotropic media, Boundary Value Problems
2 (2005) 107-127.
- S. Carl, V. K. Le and D. Motreanu,
Existence, comparison and compactness results for
quasilinear variational-hemivariational inequalities,
International Journal of Mathematics and Mathematical Sciences 3 (2005),
401-417.
- P. Candito, S. Marano and D. Motreanu,
Critical points for a class of non-differentiable
functions and applications, Discrete and Continuous Dynamical Systems
13 (2005), 175-194.
- S. Carl, V. K. Le and D. Motreanu, Existence and comparison
principles for general quasilinear variational-hemivariational
inequalities, Journal of Mathematical
Analysis and Applications 302 (2005), 65-83.
- D. Motreanu, A new approach in studying one parameter nonlinear
eigenvalue problems with constraints,
Nonlinear Analysis 60 (2005), 443-463.
- D. Motreanu, V. V. Motreanu and N. S. Papageorgiou,
Periodic solutions for nonautonomous systems with nonsmooth
quadratic and superquadratic potential, Topological Methods in
Nonlinear Analysis 24 (2004), 269-296.
- D. Goeleven, D. Motreanu and V. V. Motreanu, On the study
of a class of variational inequalities via Leray-Schauder degree,
Fixed Point Theory and Applications 4 (2004), 261-271.
- D. Motreanu and V. V. Motreanu, Nonsmooth variational
problems in the limit case and duality, Journal of Global
Optimization 29 (2004), 439-453.
- S. Carl and D. Motreanu, Extremality in Solving General Quasilinear
Parabolic Inclusions, Journal of Optimization Theory and Applications
123 (2004), 463-477.
- S. Marano and D. Motreanu,
A critical point result for non-differentiable indefinite
functionals, Commentationes Mathematicae Universitatis
Carolinae 45 (2004), 663-679.
- S. Aizicovici, D. Motreanu and N. H. Pavel, Nonlinear
Mathematical Programming and Optimal Control,
Dynamics of Continuous, Discrete and Impulsive Systems 11 (2004),
503-524.
- S. T. Kyritsi, D. Motreanu and N. S. Papageorgiou, Two nontrivial
solutions for strongly resonant nonlinear
elliptic equations, Archiv der Mathematik (Basel) 83 (2004),
60-69.
- G. Isac and D. Motreanu, Pseudomonotonicity and quasimonotonicity by
translations versus monotonicity in Hilbert spaces,
Australian Journal of Mathematical Analysis and Applications 1 (2004),
1-8.
- S. Carl, V. K. Le and D. Motreanu, Existence and comparison results
for quasilinear evolution hemivariational inequalities, Electronic
Journal of Differential Equations 2004, N. 57, pp. 1-17.
- S. Carl, V. K. Le and D. Motreanu, The sub-supersolution method
and extremal solutions for quasilinear hemivariational inequalities,
Differential and Integral Equations 17 (2004), 165-178.
- D. Motreanu and N. S. Papageorgiou, Multiple solutions for
nonlinear elliptic equations at resonance with nonsmooth potential,
Nonlinear Analysis: Theory, Methods and Applications 56 (2004), 1211-1234.
- D. Motreanu,
On the proof of a minimax principle, Le Matematiche 58 (2003),
95-99.
- G. Isac and D. Motreanu, On the solvability of
complementarity problems and variational inequalities with integral
operators, Journal of Nonlinear and Convex Analysis 4 (2003),
333-351.
- S. Marano and D. Motreanu, A deformation theorem and some
critical point results for non-differentiable functions,
Topological Methods in Nonlinear Analysis 22 (2003), 139-158.
- D. Motreanu and Z. Naniewicz, A minimax approach to semicoercive
hemivariational inequalities, Optimization 52 (2003), 541-554.
- S. Carl and D. Motreanu, Quasilinear elliptic inclusions of
hemivariational type: extremality and compactness of the solution set,
Journal of Mathematical Analysis and Applications 286 (2003), 147-159.
- J. Haslinger and D. Motreanu, Hemivariational Inequalities
with a general growth condition: Existence and Approximation,
Applicable Analysis 82 (2003), 629-643.
- G. Dinca, P. Jebelean and D. Motreanu, Existence results for
general inequality problems with constraints, Abstract and Applied
Analysis 8 (2003), 601-619.
- C. Ciulcu, D. Motreanu and V. Radulescu, Multiplicity of solutions
for a class of non-symmetric eigenvalue hemivariational
inequalities, Mathematical Methods in the Applied Sciences 26 (2003),
801-814.
- S. Carl and D. Motreanu, Extremal solutions of quasilinear parabolic
inclusions with
generalized Clarke's gradient, Journal of Differential Equations
191 (2003), 206-233.
- D. Bainov, D. Kolev and D. Motreanu, A case of blow-up for a parabolic
model with exponential boundary nonlinearity, Mathematical Sciences
Research Journal 7 (2003), 1-7.
- D. Goeleven, D. Motreanu and V. V. Motreanu, On the stability of
stationary solutions of first order evolution variational inequalities,
Advances in Nonlinear Variational Inequalities 6 (2003), 1-30.
- S. Carl and D. Motreanu, Extremal solutions of quasilinear
parabolic subdifferential inclusions, Differential and Integral
Equations 16 (2003), 241-255.
- D. Bainov, D. Kolev and D. Motreanu, Blow-up of the solutions for
an impulsive model with nonlinear boundary condition,
PanAmerican Mathematical Journal 13 (2003), 67-81.
- C. Morosanu and D. Motreanu, An extension of Lie-Trotter product
formula, Nonlinear Functional Analysis and Applications 7 (2002),
517-530.
- D. Bainov, D. Kolev and D. Motreanu, Barrier to existence of
gradient blow-up for impulsive inviscid Burgers' equation,
PanAmerican Mathematical Journal 12 (2002), 29-41.
- D. Motreanu, V. V. Motreanu and D. Pasca, A version of Zhong's
coercivity result for a general class of nonsmooth functionals,
Abstract and Applied Analysis 7 (2002), 601-612.
- D. Motreanu and Z. Naniewicz, Semilinear hemivariational
inequalities with Dirichlet boundary condition, Advances in
Mechanics and Mathematics, 2002, pp. 89-110.
- O. Chau, D. Motreanu and M. Sofonea, Quasistatic frictional
problems for elastic and viscoelastic materials, Applications
of Mathematics 47 (2002), 341-360.
- G. Dinca, P. Jebelean and D. Motreanu, Existence and Approximation
for a general class of differential inclusions, Houston Journal
of Mathematics 28 (2002), 193-215.
- D. Motreanu, V. V. Motreanu and M. Turinici, Coerciveness property
on quasi-ordered Banach spaces, Nonlinear Functional Analysis and
Applications 7 (2002), 155-166.
- S. Marano and D. Motreanu, Infinitely many critical points of
non-differentiable functions and applications to a Neumann type problem
involving the p-Laplacian, Journal of Differential Equations 182
(2002), 108-120.
- S. Marano and D. Motreanu, On a three critical points theorem for
non-differentiable functions and applications to nonlinear boundary
value problems, Nonlinear Analysis TMA 48 (2002), 37-52.
- D. Motreanu, Eigenvalue problems for
variational-hemivariational inequalities in the sense of P. D.
Panagiotopoulos, Nonlinear Analysis TMA 47 (2001), 5101-5112.
- D. Bainov, D. Kolev et D. Motreanu, Blow-up domain for an impulsive
reaction-diffusion system, Communications in Applied Nonlinear
Analysis 8 (2001), 97-107.
- D. Bainov, D. Kolev and D. Motreanu, Blow-up solutions for degenerate
impulsive parabolic models, PanAmerican Mathematical Journal 11
(2001), 81-94.
- C. Ciulcu, D. Motreanu and M. Sofonea, Analysis of an elastic contact
problem with slip dependent coefficient of friction, Mathematical
Inequalities and Applications 4 (2001), 465-479.
- D. Motreanu and Z. Naniewicz, A topological approach to hemivariational
inequalities with unilateral growth condition, Journal of
Applied Analysis 7 (2001), 23-41.
- O. Chau, D. Motreanu and M. Sofonea, A class of quasivariational
inequalities with applications to contact problems, Advances in
Nonlinear Variational Inequalities 4 (2001), 1-22.
- F. Cirstea, D. Motreanu and V. Radulescu, Weak solutions of quasilinear
problems with nonlinear boundary condition, Nonlinear Analysis TMA
43 (2001), 623-636.
- D. Goeleven and D. Motreanu, On the solvability of variational
inequalities via relaxed complementarity problems, Communications
on Applied Analysis 4 (2000), 533-545.
- S. Adly and D. Motreanu, Location of eigensolutions to variational-hemivariational
inequalities, Journal of Nonlinear and Convex Analysis, 1 (2000),
255-270.
- D. Motreanu and V. Radulescu, Existence results for inequality
problems with lack of convexity, Numerical Functional Analysis and
Optimization 21 (2000), 869-884.
- S. Adly and D. Motreanu, Periodic solutions for second order
differential equations involving nonconvex superpotentials, Journal
of Global Optimization 17 (2000), 9-17.
- D. Motreanu and M. Sofonea, Quasivariational inequalities
and applications in frictional contact problems with normal compliance,
Advances in Mathematical Sciences and Applications 10 (2000), 103-118.
- D. Motreanu and V. V. Motreanu, Coerciveness Property for
a Class of Nonsmooth Functionals,
Zeitschrift fur Analysis und ihre Anwendungen 19 (2000), 1087-1093.
- M. Bocea, D. Motreanu and P. D. Panagiotopoulos, Multiple
solutions for a double eigenvalue hemivariational inequality
on a spherelike type manifold, Nonlinear Analysis TMA 42 (2000), 737-749.
- S. Marano and D. Motreanu, Existence of two nontrivial solutions
for a class of elliptic eigenvalue problems, Archiv der Mathematik
(Basel) 75 (2000), 53-58.
- C. Morosanu and D. Motreanu, The phase field system with
a general nonlinearity,
International Journal of Differential Equations and Applications 1 (2000),
187-204.
- C. Morosanu and D. Motreanu, Uniqueness and approximation
for the nonlinear parabolic Equations in Caginalp's model,
International Journal of Applied Mathematics 2 (2000), 113-129.
- D. Motreanu and M. Sofonea, Evolutionary variational inequalities
arising in quasistatic frictional contact problems for elastic
materials, Abstract and Applied Analysis 4 (1999), 255-279.
- D. Goeleven and D. Motreanu, A mathematical approach to the
rock interface problems, Journal of Elasticity 55 (1999), 79-97.
- D. Goeleven and D. Motreanu, Regularity theorems for a class of
variational-hemivariational inequalities, PanAmerican Mathematical
Journal 9 (1999), 35-54.
- D. Motreanu and Cs. Varga, A multiple linking minimax principle
for locally Lipschitz functionals, Communications in
Applied Analysis 3 (1999), 115-130.
- S. Aizicovici, D. Motreanu and N. H. Pavel, Nonlinear programming
problems associated with closed range operators, Applied Mathematics
and Optimization 40 (1999), 211-228.
- C. Morosanu and D. Motreanu, A generalized phase field model,
Journal of Mathematical Analysis and Applications 237 (1999), 515-540.
- S. Dabuleanu and D. Motreanu, Existence results for
a class of eigenvalue quasilinear problems with nonlinear boundary
condition, Advances in Nonlinear Variational Inequalities 2 (1999),
41-54.
- C. Morosanu and D. Motreanu, An extension of the nonlinear
parabolic equation in Caginalp's model, Communications in
Applied Analysis 2 (1998), 159-168.
- S. Adly, D. Goeleven and D. Motreanu,; Periodic and homoclinic
solutions for nonautonomous systems with discontinuous nonlinearities:
a survey on the inequality approach, Advances in Nonlinear
Variational Inequalities 1 (1998), 11-26.
- D. Goeleven, D. Motreanu and P. D. Panagiotopoulos, Eigenvalue
problems for variational-hemivariational inequalities at resonance,
Nonlinear Analysis TMA 33 (1998), 161-180.
- D. Goeleven and D. Motreanu, Asymptotic eigenvalues and spectral
analysis of variational inequalities, Communications in Applied
Analysis 2 (1998), 343-372.
- D. Goeleven, D. Motreanu and P. D. Panagiotopoulos, Multiple
solutions for a class of eigenvalue problems in hemivariational
inequalities, Nonlinear Analysis TMA 29 (1997), 9-26.
- D. Goeleven, D. Motreanu and P. D. Panagiotopoulos, Multiple
solutions for a class of hemivariational inequalities involving
periodic energy functionals, Mathematical Methods in Applied Sciences
20 (1997), 547-568.
- D. Motreanu and V. Radulescu, Existence theorems for some
classes of boundary value problems involving the p-Laplacian, PanAmerican
Mathematical Journal 7 (1997), 53-66.
- D. Motreanu and Cs. Varga, Some critical point results for
locally Lipschitz functionals, Communications in Applied Nonlinear
Analysis 4 (1997), 17-33.
- S. Adly, D. Goeleven and D. Motreanu, Periodic and homoclinic solutions
for a class of unilateral problems, Discrete and Continuous
Dynamic Systems 3 (1997), 579-590.
- D. Goeleven and D. Motreanu, A degree theoretic approach
for the study of eigenvalue problems in variational-hemivariational
inequalities, Differential Integral Equations 10 (1997), 893-804.
- D. Goeleven, D. Motreanu and P. D. Panagiotopoulos, Semicoercive
variational-hemivariational inequalities, Applicable Analysis
65 (1997), 119-134.
- D. Motreanu and P. D. Panagiotopoulos, Double eigenvalue
problems for hemivariational inequalities, Archive for Rational
Mechanics and Analysis 140 (1997), 225-252.
- D. Motreanu, A saddle-point approach to nonlinear eigenvalue
problems, Mathematica Slovaca 47 (1997), 463-477.
- D. Motreanu, A transversality result with applications to elliptic
problems, Revue Roumaine des Mathematiques Pures et Appliquees 42
(1997), 795-803.
- D. Motreanu and Z. Naniewicz, Discontinuous semilinear problems
in vector-valued function spaces, Differential and Integral Equations
9 (1996), 581-598.
- D. Motreanu and P. D. Panagiotopoulos, On the eigenvalue
problem for hemivariational inequalities: existence and multiplicity
of solutions, Journal of Mathematical Analysis and Applications
197 (1996), 75-89.
- D. Motreanu, A multiple linking minimax principle, Bulletin
of Australian Mathematical Society 53 (1996), 39-49.
- D. Goeleven and D. Motreanu, Eigenvalue and dynamic problems for
variational and hemivariational inequalities, Communications in
Applied Nonlinear Analysis 3 (1996), 1-21.
- D. Motreanu and P. D. Panagiotopoulos, Nonconvex energy
functions, related eigenvalue hemivariational inequalities on the sphere
and applications, Journal of Global Optimization 6 (1995), 163-177.
- D. Motreanu and P. D. Panagiotopoulos, An eigenvalue
problem for a hemivariational inequality involving a nonlinear
compact operator, Set-Valued Analysis 3 (1995), 157-166.
- D. Motreanu, Existence of critical points in a prescribed
set, An. St. "Al. I. Cuza" Iasi 41 (1995), 57-64.
- D. Motreanu and P. D. Panagiotopoulos, A minimax approach
to the eigenvalue problem of hemivariational inequalities and
applications, Applicable Analysis 58 (1995), 53-76.
- D. Motreanu, Existence of critical points in a general setting,
Set-Valued Analysis 3 (1995), 295-305.
- D. Motreanu, Controllability of projected control systems,
Control and Cybernetics 20 (1991), 21-34.
- D. Motreanu, Strong accessibility with respect to a submersion,
Problems in Control and Information Theory 19 (1990), 45-54.
- D. Motreanu, Control vector fields with strong accessibility
property, Tensor N. S. 49 (1990), 211-217.
- D. Motreanu, Generic finiteness in solving optimal control
problems, Annales Polonici Mathematici 49 (1988), 135-145.
- D. Motreanu, Optimization problems on complete Riemannian
manifolds, Colloquium Mathematicum 53 (1987), 229-238.
- D. Motreanu, Tangent vectors to sets in the theory of geodesics,
Nagoya Mathematical Journal 106 (1987), 29-47.
- D. Motreanu and N. H. Pavel, Flow-invariance for second order
differential equations on manifolds and orbital motions,
Bolletino Unione Matematica Italiana I. 1-B (1987), 943-964.
- D. Motreanu, Existence for minimization with nonconvex constraints,
Journal of Mathematical Analysis and Applications 117 (1986), 128-137.
- D. Motreanu and C. Popa, Hamilton-Jacobi equations on infinite-dimensional
Riemannian manifolds, Nonlinear Analysis TMA 9 (1985), 739-761.
- D. Motreanu and N. H. Pavel, Flot-invariance par rapport
aux equations differentielles de second ordre sur une variete, Comptes
Rendus de l' Academie des Sciences de Paris 297 (1983), 157-160.
- D. Motreanu, Homotopy type of {(Y_i, Y_{0,i},p_i)}-complexes, Rendiconti
di Matematica di Roma 2 (1982), 111-115.
- D. Motreanu and N. H. Pavel, Quasi-tangent vectors in flow-invariance
and optimization problems on Banach manifolds, Journal of
Mathematical Analysis and Applications 88 (1982), 116-132.
- D. Motreanu, A characterization of transversality to distributions,
An. St. Univ. "Al. I. Cuza" Iasi 27 (1981), 59-62.
- D. Motreanu, Une caracterisation de certaines equivalences d'homotopie,
Comptes Rendus de l' Academie des Sciences de Paris 291 (1980), 53-56.
- D. Motreanu, Singular homology of some adjunction spaces
more general than CW-complexes, An. Univ. Timisoara 17 (1979), 133-140.
- D. Motreanu, The category of preringed manifolds, Mem.
Sec. St. Acad. Rom. 2 (1979), 77-85.
- D. Motreanu, Preringed manifolds and bundles with structure
group, Bul. Inst. Polit. Iasi 24 (1978), 19-24.
- D. Motreanu, Embeddings of C infinity-subcartesian spaces,
An. St. Univ. "Al. I. Cuza" Iasi 25 (1978), 65-70.
- D. Motreanu, Some properties of the reduced suspension and
a generalization of CW- complexes, An. St. Univ. "Al. I. Cuza" Iasi
22 (1976), 29-34.
- D. Motreanu, Preringed manifolds and their relation to differentiable
manifolds, Mathematica (Cluj-Napoca) 18 (41) (1976), 191-194.
- D. Motreanu, Differential spaces, tangent bundles and partitions
of unity, Mathematica Balkanica. 5 : 38 (1975), 212-215.
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III. Book Chapters and Papers in Refereed Proceedings
- D. Motreanu, A degenerate Kirchhoff-type inclusion problem with nonlocal operator,
Nonlinear analysis and global optimization, 309–329, Springer Optim. Appl., 167, Springer, Cham, 2021.
- D. Motreanu and V.V. Motreanu, (p,q)-Laplacian equations with convection term and a intrinsic operator,
Differential and integral inequalities, 589–601, Springer Optim. Appl., 151, Springer, Cham, 2019.
- D. Motreanu and V.V. Motreanu, Location results for variational-hemivariational inequalities,
Advances in variational and hemivariational inequalities, 65–88, Adv. Mech. Math., 33, Springer, Cham, 2015.
- D. Motreanu and P. Winkert, Elliptic problems
with nonhomogeneous differential operators and multiple solutions,
Mathematics without boundaries, 357–379, Springer, New York, 2014.
- D. Motreanu and V. V. Motreanu, Sign – changing
Solutions for Nonlinear Elliptic Problems Depending on Parameters,
Chapter 15 in: Handbook of Functional Equations: Functional Inequalities, p. 327–364,
Springer, New York, 2014.
- D. Motreanu and P. Winkert, The Fucik Spectrum for the Negative
p-Laplacian with Different BoundaryConditions,
Chapter 28 in: Nonlinear Analysis, p. 471–485, Springer, New York, 2012.
- S. Carl and D. Motreanu, Sub-supersolution method for multi-valued elliptic and evolution problems,
Handbook of nonconvex analysis and applications, p. 45–98, Int. Press, Somerville, MA, 2010.
- D. Motreanu,
Nonlinear problems in mathematical programming and optimal control,
Chapter 26 in: Volume dedicated to the memory of Prof. George Isac, Springer,
New York, 2010, p.431-440.
- S. Carl and D. Motreanu,
Multiple solutions of nonlinear elliptic variational problems,
Chapter 7 in: Nonlinear Analysis Research Trends,
Nova Science Publishers, New York, 2008, p. 235-255.
- V. K. Le and D. Motreanu, On a general minimization problem with
constraints,
Proceedings of the Conference on Differential &
Difference Equations and Applications,
Hindawi Publishing Corporation,
New York, 2006, pp. 645-654.
- D. Motreanu, Minimax theory, duality and applications,
Complementarity, duality and symmetry in nonlinear mechanics,
209-223, Adv. Mech. Math., 6, Kluwer Acad. Publ., Boston, MA, 2004.
- D. Motreanu, Existence and multiplicity results for
variational--hemivariational inequalities in the sense of P. D.
Panagiotopoulos, in: Proceedings of the International Conference
on Nonsmooth/Nonconvex Mechanics with Applications in Engineering,
In memoriam of Professor P. D. Panagiotopoulos, 5-6 July 2002,
Thessaloniki, Greece, pp. 23-30.
- D. Goeleven and D. Motreanu, Hemivariational inequalities:
Eigenvalue
problems, In: "Encyclopedia of Optimization"
(C.A. Floudas and P. M. Pardalos, Eds), Kluwer Academic Publishers (2001),
vol. 2, pp. 394-399.
- D. Goeleven and D. Motreanu, Nonconvex-nonsmooth calculus of
variations, In:
"Encyclopedia of Optimization" (C.A. Floudas and P. M. Pardalos, Eds),
Kluwer Academic Publishers (2001), vol. 4, pp. 31-35.
- D. Motreanu, Location of solutions to eigenvalue problems for hemivariational
inequalities, Volume dedicated to the Memory of Professor P. D.
Panagiotopoulos, Kluwer Academic Publishers, Dordrecht, Boston, London,
2001, pp. 263-276.
- S. Aizicovici, D. Motreanu and N. H. Pavel, Fully Nonlinear Programming
Problems with Closed Range Operators, in Differential Equations
and Control Theory (S. Aizicovici and N. H. Pavel, eds.), Lecture Notes
Pure Appl. Math., vol. 225, M. Dekker, New York, 2001, p. 19-30.
- D. Motreanu, Variational-hemivariational inequalities in the sense
of P. D. Panagiotopoulos: theory and applications, The Second
International Symposium on Impact and Friction of Solids, Structures
and Intelligent Machines, ISIFSM2K, Montreal, August 8-12, 2000, Proceedings,
to appear.
- D. Goeleven and D. Motreanu, Hyperbolic hemivariational inequality
and nonlinear wave equation with discontinuities, From Convexity
to Nonconvexity, a volume dedicated to the memory of Professor Gaetano
Fichera, Kluwer Academic Publishers, 2001, p. 111-122.
- D. Motreanu and P. D. Panagiotopoulos, Nonsmooth variational
methods and applications to discontinuous boundary value problems,
Proceedings of the Ninth International Colloquium on Differential Equations,
Plovdiv, Bulgaria, 18-23 August 1998 (Editor: D. Bainov), VSP, Utrecht,
The Netherlands, 1999, p. 281-288.
- D. Goeleven and D. Motreanu, Minimax methods of Szulkin's type
in unilateral problems, in: Functional Analysis - Selected Topics
(Ed. P. K. Jain), Narosa Publishing House, New Delhi, India, 1998, p.
169-183.
- D. Goeleven, D. Motreanu and P. D. Panagiotopoulos, Eigenvalue
problems in hemivariational inequalities, Progress in Partial
Differential Equations, The Metz Surveys 4 (M. Chipot and I. Shafrir,
Ed.), Longman, Harlow, 1996, Research Notes in Mathematics Series 345,
p. 66-82.
- D. Motreanu and P. D. Panagiotopoulos, On the buckling of
adhesively connected von Karman plates allowing for delamination. An
eigenvalue hemivariational inequality approach, Asymptotic
theories in plates and shells theory, Longman Scientific & Technical,
Harlow, 1995, p. 87-99.
- D. Motreanu, Qualitative properties of some critical points of
minimax type, Proceedings of Conference of Geometry and Topology,
Cluj-Napoca, 1994, p. 93-97.
- D. Motreanu and P. D. Panagiotopoulos, Hysteresis: the eigenvalue
problem for hemivariational inequalities, Models of hysteresis,
Longman Scientific & Technical, Harlow, 1993, p. 102-117.
- C. Lefter and D. Motreanu, Critical point methods in nonlinear
eigenvalue problems with discontinuities, International Series
of Numerical Mathematics 107, Birkhauser Verlag, Basel, 1992, p. 25-36.
- D. Motreanu, Applications of Morse theory in variational and boundary
value problems, Classical Analysis, World Scientific, 1992, p. 170-178.
- D. Motreanu, Morse functions in variational and boundary value
problems, Differential equations and control theory, Longman Scientific
& Technical, Harlow, 1991, p. 222-227.
- D. Motreanu, Generic existence of Morse functions on infinite
dimensional Riemannian manifolds and applications, Global
Differential Geometry and Global Analysis, Lecture Notes in Mathematics
1481, Springer-Verlag, Berlin, 1991, p. 175-184.
- D. Motreanu, Transversality methods in variational and control
problems, Proceedings of Differential Geometry and Applications,
World Scientific, 1990, p. 265-269.
- D. Motreanu, Generic existence of Morse functions, Proceedings
of Conference of Geometry and Topology, Timisoara, 1989, p. 167-175.
- D. Motreanu, Projected control vector fields and local controllability,
Proceedings of Conference of Geometry and Topology, Iasi, 1988,
p. 251-256.
- D. Motreanu, The existence of Morse functions on $C^\infty$--subcartesian spaces,
Proc. Colloq. Geom. Top., Cluj-Napoca, 1979, pp. 190-201.
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Invited Talks at Professional Conferences |
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- Qualitative Analysis of Some Quasi-Linear Elliptic Problems (invited talk),
The 2016 International Conference on Differential Equations, November 5- 7 2016, Rome, Italy.
- Quasilinear elliptic problems fully depending on the gradient of the solution (invited talk),
Emerging Trends in Applied Mathematics and Mechanics, May 30- June 3 2016, Perpignan, France.
- A simple principle to locate nodal solutions,
January 18th 2016, University of Reggio Calabria, Italy (invited talk, in "A Second Day on
Nonlinear Differential Problems").
- Nonlinear elliptic problem driven by a nonhomogeneous operator,
The 10th AIMS Conference on Dynamical Systems, Differential Equations ans Applications,
July 7th to 11th, 2014 (invited talk, special session organizer of "Variational, topological,
and set-valued methods for differential problems", jointly with G. Bonanno, S. Carl, and S. Marano, in Madrid).
- Moser Iteration Technique and Regularity,
International Symposium on Modern Mathematics and Mechanics, University of Olomouc, Czech Republic,
June 23, 2014 (invited talk).
- Boundary Value Problems Involving a Nonhomogeneous Operator,
International Worshop "Modeling and analysis of nonlinear problems", University of Olomouc, Czech Republic,
June 24, 2014 (invited talk).
- Smooth Minimizers Versus Sobolev Minimizers,
International Worshop "Modeling and analysis of nonlinear problems", University of Olomouc, Czech Republic,
June 26, 2014 (invited talk).
- Multiple Solutions for Nonlinear Elliptic Problems,
International Worshop "Modeling and analysis of nonlinear problems", University of Olomouc, Czech Republic,
June 27, 2014 (invited talk).
- New results on smooth minimizers versus Sobolev minimizers,
International Worshop "Modeling and analysis of nonlinear problems", Perpignan, France,
June 5, 2014 (invited talk).
- Sign-changing solutions for nonlinear elliptic equations and systems,
Tokyo University of Science, Tokyo, Japan,
January 15, 2014 (invited talk).
- Minimization and variational methods related to nonlinear boundary value problems, session organized within
11th EUROPT Workshop on Advances in Continuous Optimization, Firenze (Italy), June 26-28, 2013
- Nonlinear parametric minimization and variational methods for quasilinear equations,
Joint Mathematics Meetings, Boston, U.S.A.,
January 4-7, 2012 (invited speaker).
- Minimization and variational Methods for quasilinear equations,
Numerical Analysis and Optimization- Theory and Applications (NAOTA 2011), Dhahram, Saudi Arabia,
December 18-19, 2011 (invited speaker).
- Properties of Fucik spectrum related to various boundary value problems,
25th IFIP TC 7 COnference on System Modeling and Optimization, Berlin, Germany, September 12-16, 2011
(invited speaker).
- Multiple solutions for quasilinear elliptic equations with Neumann boundary conditions,
The Sixth International Conference on Dynamic Systems and Applications, Atlanta, U.S.A., May 25-28, 2011
(invited speaker).
- Multiple solutions for systems of elliptic equations with p-Laplacian operators,
Institute of Mathematics of Czech Academy,
Czech Republic, December 15, 2010 (one-hour talk).
- Fucik spectrum for the p-Laplacian, University of Palermo,
Italy, December 13, 2010 (one-hour talk).
- Fucik spectrum of p-Laplacian with Robin boundary condition,
Guangxi University for Nationalities, Nanning, China, October 19, 2010
one-hour talk).
- Multiple solutions with sign-information for elliptic equations and systems,
8th AIMS International Conference on Dynamical Systems, Differential Equations and Applications,
Dresden, Germany, May 25-28, 2010 (Organizer of the session "Variational Methods
for Non-Smooth Functions and Applications" with S. A. Marano and S. Carl).
- Multiple solutions for quasilinear Neumann problems,
International Workshop on Variational,
Topological and Set-Valued Mathods for Nonlinear Differential Problems,
Messina, April 14-16, 2010 (one-hour talk, chair of a session).
- Multiple and sign-changing solutions for nonlinear elliptic problems with
p-Laplacian, Special Session: Degenerate and Singular
Elliptic Partial Differential Equations,
Meeting #1056: Joint Mathematics Meetings (American Mathematical Society),
San Francisco, California, January 13-16, 2010.
- Multiple solutions for asymmetric nonlinear elliptic problems,
one-hour talk, University of Reggio Calabria, Italy,
October 13, 2009.
- Sign-changing solutions for nonlinear elliptic problems,
one-hour talk, University of Catania, Italy,
October 9, 2009.
- Multiple positive solutions for nonlinear elliptic problems,
one-hour talk, University of Messina, Italy,
October 8, 2009.
- Multiple solutions for Dirichlet problems with asymmetric nonlinearities,
one-hour talk, Kolloquium, Martin-Luther Universitat Halle-Wittenberg,
July 16, 2009.
- Multiple solutions for a nonlinear Dirichlet problem involving the p-Laplacian,
(p-1)-sublinear terms and asymmetric nonlinearities, one-hour talk,
Chinese Academy of Mathematics, June 10, 2009.
- Multiple solutions of nonlinear elliptic problems through minimization,
variational techniques and Morse theory, The First World Congress on Global
Optimization in Engineering and Sciences, Changsha, China, June 1-5, 2009
(one-hour talk, organizer of a session, member of Organizing Committee).
- Nonlinear Dirichlet problems with asymetric forcing term,
Mississippi State - UAB Conference on Differential Equations and Computational Simulations,
Starkville, Mississippi, U.S.A., May 7-9, 2009.
- Fifth World Congress of Nonlinear Analysts (WCNA-2008),
Hyatt Regency, Orlando, Florida, U.S.A., July 2-July 9, 2008
(one-hour talk, organizer of a session, member in the Global Organizing Committee).
- The 7th AIMS International Conference on Dynamical Systems,
Differential Equations and Applications, University of Texas at Arlington,
U.S.A.,
May 18-21, 2008 (organizer of a session).
- 23rd IFIP TC 7 Conference on System Modelling and Optimization,
Krakow, Poland, July 23-27, 2007.
- Fifth International Conference on Dynamic Systems and
Applications, Atlanta, U.S.A., May 30-June 2, 2007.
- Conference Internationale en Analyse Non lisse et Variationnelle
dans les Sciences et l'Inginerie, Limoges, France, 20-22 Juin, 2007.
- International Workshop on Applied Evolution Equations, CEU
Mathematics Department, Budapest, Hungry, May 21-25, 2007 (one hour lecture).
- CODE 2007 : Conférence de la SMAI sur l'optimisation et la
décision, May 18-20, 2007, Paris, France.
- Second International Conference on Complementarity, Duality, and
Global Optimization in Science and Engineering, University of
Florida, Gainesville, Florida, U.S.A., February 28-March 2, 2007.
- 5th International Conférence on Differential Equations and
Dynamical Systems, University of Texas-Pan American, Edinburg,
Texas, U.S.A., December 16-18, 2006.
- Seminar, "Multiple and sign-changing solutions of nonlinear elliptic
eigenvalue problems", Institut fur Mathematik, Martin-Luther
Universitat, Halle-Wittenberg, Germany, November 2, 2006.
- 6eme Conference Internationale AIMS "Systemes Dynamiques,
Equations Differentielles et Applications", Poitiers, France, 25-28 juin 2006.
- Seminar, "Problèmes aux valeurs propres pour des équations elliptiques",
Département de Mathèmatiques, Université d'Avignon, Avignon, France, June 15,
2006.
- Optimisation, Analyse multivoque et Analyse non-linéaire,
Universite de Pau et des Pays de l'Adour, Pau, France, February 2-3, 2006.
- A Minimax Approach for Parametric Eigenvalue Problems with Constraints,
Complementary, Duality, and Global Optimization in Science and
Engineering (CDGO 2005), Virginia Tech, Blacksburg, Virginia, U.S.A.,
August 15-17, 2005.
- Conference on Differential & Difference Equations and Applications,
Melbourne, Florida, U.S.A., August 1-5, 2005.
- 22nd IFIP TC 7 Conference on System Modeling and Optimization,
Turin, Italy, July 18-22, 2005.
- NSF/CBMS Regional Research Conference on New Perspectives for Boundary
Value Problems and their Asymptotics, University of Texas-Pan American,
Edinburg, Texas, U.S.A., May 16-20, 2005.
- International Conference on Nonlinear Operators, Differential
Equations and Applications (ICNODEA-2004), Cluj-Napoca, Romania,
August 24-27, 2004.
- Fourth World Congress of Nonlinear Analysts (WCNA-2004),
Hyatt Regency, Orlando, Florida, U.S.A., June 30-July 7, 2004
(one-hour talk, organizer of a session, member in the Global Organizing Committee).
- Seminaire du Laboratoire de Modelisation, Analyse Non lineaire et
Optimisation, "Une approche de sous et sursolutions pour certaines
inclusions differentielles evolutives", Universite de Perpignan, Perpignan, France,
October 16, 2003.
- Seminar, "A new non-smooth variational approach in studying
variational-hemivariational inequalities", Department of Mathematics
and Computer Science, Royal Military College of Canada, Kingston, Canada,
August 19, 2003.
- The Fourth ISAAC Congress, York University, Toronto, Canada,
August 11-16, 2003.
- System Modelling and Optimization, Sofia Antipolis, France,
July 21-25, 2003.
- Frontier in Global Optimization, Santorini, Greece,
June 8-12, 2003.
- Fourth International Conference on Dynamic Systems and
Applications, Atlanta, U.S.A., May 21-24, 2003.
- Seminaire du Laboratoire de Modelisation, Analyse Non lineaire et
Optimisation, "Localisation de solutions dans des problemes non lineaires
aux valeurs propres", Universite de Perpignan, Perpignan, France, October 23, 2002.
- 6eme Colloque Franco-Roumain de Mathematiques Appliquees,
"Principes minimax et applications aux problemes non lineaires",
Perpignan, France, September 2-6, 2002.
- Twelfth International Colloquium on Differential Equations,
Plovdiv, Bulgaria, August 18-23, 2002.
- "Nonsmooth Variational Methods with Applications to Nonlinear Problems
in Mechanics", The Second International Conference on Optimization
and Control with Applications,
Yellow Mountain, Tunxi, China, August 17-23, 2002.
- Fourth International Conference on Nonlinear Mechanics (ICNM-IV) and
IUTAM Symposium on Duality-Complementarity-Symmetry in
Nonlinear Mechanics (SDCS), Shanghai, China, August 13-16, 2002
(chair of a session).
- International Conference on Nonsmooth/Nonconvex Mechanics with
Applications in Engineering, In Memoriam of Professor
P. D. Panagiotopoulos, Aristotle University of Thessaloniki,
July 5-6, 2002 (member of the Scientific Comitee).
- International Congress on Mechatronics,
Johannes Kepler University of Linz, July 3-6, 2002
(member of the International Program Commitee).
- The Fourth International Conference on Dynamical Systems and
Differential Equations, Wilmington, North Carolina, U.S.A.,
May 24-27, 2002.
- Seminaire d'Analyse Numerique et Equations aux Derivees
Partielles de Lyon, "Existence, multiplicite et localisation
des solutions de certains problemes aux limites avec discontinuites
et contraintes", Universite de Lyon, Lyon, France, Mars 12, 2002.
- Informs 2002 Anual Meeting, invited session of Nonsmooth
Critical Point Theory, Hemivariational inequalities and Global
Optimization, Miami Beach, U.S.A., November 4-7, 2001
(organizer of a session).
- Second International Conference on Acoustics, Noise and
Vibration, Ottawa, Ontario, Canada, August 6-8, 2001
(member of the Scientific Commitee).
- Eleventh International Colloquium on Differential Equations, Plovdiv,
Bulgaria, August, 2001 (member of the Scientific Commitee).
- Tenth International Colloquium on Differential Equations, Plovdiv,
Bulgaria, August 19-23, 2000 (member of the Scientific Commitee
and of Organizing Comitee).
- The Second International Symposium on Impact and Friction of Solids,
Structures and Intelligent Machines
(ISIFSM2K), Montreal, Canada, August 8-12, 2000.
- 3rd World Congress of Nonlinear Analysis, Catania, Italy, July 16-23,
2000.
- Advances in Convex Analysis and Global Optimization, Honoring the
Memory of C. Caratheodory (1873-1950), Pythagorion, Samos, Greece, June
5-9, 2000.
- Seminaire d'Analyse non lineaire et d'Optimisation (LACO),
"Theoremes de minimax avec des applications aux inegalites
variationnelles-hemivariationnelles", Universite de Limoges, Limoges, France,
February 9, 2000.
- Symposium on "Nonsmooth/Nonconvex Mechanics", Blacksburg, Virginia,
U.S.A., June 27-30, 1999.
- Seminaire d'Analyse non lineaire et d'Optimisation (LACO),
"Localisation des points critiques et applications", Universite de Limoges, Limoges, France,
June 4, 1999.
- Seminar, "A nonsmooth critical point theory with applications to
discontinuous elliptic problems", Universita degli Studi di
Palermo, Dipartimento di Matematica ed Applicazioni, Palermo, Italia,
October 30, 1998.
- Seminar, "A nonsmooth critical point theory with applications to
discontinuous elliptic problems",
Universita' di Catania, Dipartimento di Matematica, Catania,
Italia, 26.10.1998.
- 4-eme Colloque Franco-Roumain, Equations aux Derivees Partielles:
Theorie, Applications, Calcul, Metz, France, August 31 - September 4,
1998.
- The Eighth International Colloquium on Differential Equations, Plovdiv,
Bulgaria, August 18-23, 1997.
- Seminar, "Variational eigenvalue problems with applications",
Universita degli Studi di Palermo,
Dipartimento di Matematica ed Applicazioni, Palermo, Italie, Juillet 29, 1999.
- First International ISAAC Congres, Delaware, U.S.A., June 2-6, 1997.
- Seminar, "Critical point theory in the sense of Szulkin and an extension",
Universita' degli Studi di Trento, Laboratorio di Matematica Applicata,
Trento, Italy, July 17, 1996.
- Second World Congress of Nonlinear Analysts, Athens, Greece, July
10-17, 1996.
- Fifth SIAM Conference on Optimization, Victoria, British Columbia,
Canada, May 20-22, 1996.
- Seminar, "Points critiques avec contraintes et problemes aux valeurs
propres", Facultes Universitaires Notre-Dame de la Paix,
Departement de Mathematiques, Namur, Belgique, March 25, 1996.
- Seminaire, "Methodes variationnelles en theorie des points
critiques et applications aux equations elliptiques",
Universite de Pau et des Pays de l'Adour, Laboratoire de
Mathematiques Appliquees, Pau, France, March 25, 1994.
- Journees des Systemes Hamiltoniens. Seminaires du
Laboratoire de Physique Appliquee, "Problemes aux valeurs
propres et applications aux Equations elliptiques et Systemes
hamiltoniens", Universite de Pau, Pau, France, May 2-3, 1994.
- Conference on Differential Equations EQUADIFF 8, Bratislava, Slovakia,
August 24-28, 1993.
- The Fourth Colloquim on the Qualitative Theory of Differential Equations,
Szeged, Hungary, August 18-21, 1993.
- European Congress of Mathematics, Paris, France, July 6-10, 1992.
- The 3-rd International Workshop-Conference on Evolution Equations,
Control Theory and Biomathematics,
Han-sur-Lesse, Belgium, October 20-26, 1991.
- Short Conference on Uniform Mathematics, Berne, Swuitzerland, August
14-16, 1991.
- 6-th Symposium on Classical Analysis, Kazimir Dolny, Poland, September
23-29, 1991.
- Winterschool on Infinite Dimensional Differential Geometry, Vienna,
Austria, February 3-9, 1991.
- Mathematical Optimization - Theory and Applications, Eisenach, Germany,
December 9-13, 1990.
- Global Differential Geometry and Global Analysis, Berlin, Germany,
June 15-20, 1990.
- EQUADIFF 7 Conference, Prague, Czech Republic, August 21-25, 1989.
- Seminar, "Quasi-tangent vectors and applications to geodesics",
Department of Mathematics, University of Freiburg, Freiburg, Germany, July 27, 1984.
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