Grants, Publications, Visits

Research Grants

◆ director of the CNCS-UEFISCDI research mobility project PN-III-P1-1.1-MC-2018-1443.

◆ director of the CNCS-UEFISCDI research mobility project: PN-III-P1-1.1-MC-2017-2433.

◆ director of the CNCS-UEFISCDI young teams research project: Controllability and optimization problems, project number: PN-II-RU-TE-2014–1109.

◆ director of the CNCS-UEFISCDI research project: Numerical methods for controls of partial differential equations, PNII Grant, Capacitati Brancusi, Modul III, Bilateral proiect Romania-France, project number PN-II-CT-RO-FR 2012-1-1005, Nr. 700/19.04.2013, CF-128/19.04.2013. Members of the french team: Nicolae Cindea, Arnaud Munch. Members of the romanian team: Florin Ioan Bugariu, Sorin Daniel Micu, Ionel Roventa.

◆ member of the research project CNCS-UEFISCDI: Controllability, asymptotic behavior and numerical analysis for evolutionary processes, project number: PN-II-ID-PCE-2011-3-0257. Director: Sorin Daniel Micu.

◆ member of the research project CNCS-UEFISCDI: Mathematical methods applied in the study of mechanical systems, project number: PN-II-RU-TE-2014–4-0320. Director: Ionel Dumitrel Ghiba.

◆ Postdoctoral Fellowship: POSDRU/159/1.5/S/133255, University of Craiova, research project: Optimization problems in convex analysis and control theory, April 2014 - October 2015.

◆ member of the research project CNCS-UEFISCDI: Strongly Nonlinear Problems in Contact Mechanics, project number: PN-II-RU-TE-2011-3-0223. Director: Andaluzia-Cristina Matei.

◆ member of the research project : Sisteme cu parametri distribuiti: analiza, sinteza via functionale Liapunov pentru comanda, aproximare numerica oi implementare tip neurocomputing, Nr/data inregistrarii: 10C/27.01.2014 Finantator: Universitatea din Craiova, (2014). Director: Daniela Danciu.

◆ member of the research project "Control of some fluid-structure interaction", supported by Laboratoire Europeen Associe CNRS Franco-Roumain, LEA MATH-MODE Mathematiques and Modelisation, 2011.

◆ member of the CNCSIS research project: Problems of convex analysis, numerique analysis and control in the study of phisical complex systems, Grant PNII, IDEI, Nr. 420/2008. Director: Constantin P. Niculescu.

◆ member of the CNCSIS research project: Analysis and controls of the neliniar differential systems, 589/2007. Director: Vicentiu Radulescu.

◆ member of the CNCSIS Grant: Integration of master programs into the European higher educational framework by promoting interdisciplinary research via nonlinear analysis and evolution problems, Contract 26761/2005 theme 14, Grant 80. Director: Constantin P. Niculescu.

Romanian Academy award

★ Spiru Haret Prize of the Romanian Academy awarded for the paper: Particle supported control of a fluid-particle system, Journal de Mathématiques Pures et Appliquées 104 (2) (2015), 311-353 (in collaboration with: N. Cindea, S. Micu, M. Tucsnak).

Publications

◆ P. Lissy, I. Rovența, M. A. Tudor, Ingham's type inequalities for arbitrary families of exponentials, work in progress.

◆ G. Leugering, S. Micu, I. Rovența, Y. Wang, Controllability properties of a system consisting of two elastic strings with tip-masses connected by an elastic spring, work in progress.

◆ S. Micu, I. Rovența, L. E. Temereanca, The approximations of the controls for the 2D wave equation, work in progress.

◆ I. Rovența, L. E. Temereanca, M. A. Tudor, A note on weighted Ingham's inequality for families of exponentials with no gap, 24th International Conference on System Theory, Control and Computing (ICSTCC) (2020), 43-48, doi: 10.1109/ICSTCC50638.2020.9259770.

◆ S. Micu, I. Rovența, L. E. Temereanca, Approximation of the controls for the wave equation with a potential, Numerische Mathematik 144 (4) (2020), 835-887.

◆ P. Lissy, I. Rovența, Optimal approximation of internal controls for a wave-type problem with fractional Laplacian using finite-difference method, Mathematical Models and Methods in Applied Sciences (M3AS) 30 (3) (2020), 439-475.

◆ C. P. Niculescu, I. Rovența, Convex functions and Fourier coefficients, Positivity 24 (1) (2020), 129-139.

◆ M. Malin, I. Rovența, Ky Fan's inequality in the context of relative convexity, Journal of Nonlinear and Convex Analysis 21 (3) (2020), 629-637.

◆ P. Lissy, I. Rovența, Optimal filtration for the approximation of boundary controls for the one-dimensional wave equation, Mathematics of Computation, 88 (315) (2019), 273-291.

◆ I. Rovența, L. E. Temereanca, A note on the positivity of the even degree complete homogeneous symmetric polynomials, Mediterranean Journal of Mathematics, (2019), 16: 1.

◆ M. Malin, I. Rovența, M. Tudor, The Convergence of a Sequence of Iterated Polygons: A Discrete Combinatorial Analysis. In: Elaydi S., Pötzsche C., Sasu A. (eds) Difference Equations, Discrete Dynamical Systems and Applications. ICDEA 2017. Springer Proceedings in Mathematics & Statistics, vol 287. Springer, Cham (2019), 17 pages.

◆ N. Cindea, S. Micu, I. Rovența, Boundary controllability for finite-difference semi-discretizations of a clamped beam equation, SIAM Journal on Control and Optimization (SICON) 55 (2) (2017), 785-817.

◆ D. Y. Gao, P. Neff, I. Rovența, C. Thiel, On the convexity of nonlinear elastic energies in the right Cauchy-Green tensor, Journal of Elasticity 127 (2) (2017), 303-308.

◆ C. P. Niculescu, I. Rovența, Hardy-Litllewood-Polya theorem of majorization in the framework of generalized convexity, Carpathian Journal of Mathematics 33 (1) (2017), 87-95.

◆ I. Rovența, A note on majorization via perturbed minimizers, Journal of Mathematical Inequalities, 2017, accepted for publication.

◆ F.I. Bugariu, S. Micu, I. Rovența, Approximation of the controls for the beam equation with vanishing viscosity, Mathematics of Computation 85 (301) (2016), 2257-2303.

◆ S. Micu, I. Rovența, L.E. Temereanca, Approximation of the controls for the linear beam equation, Mathematics of Control, Signals and Systems 23 (2) (2016), 53 pages.

◆ N. Cindea, S. Micu, I. Rovența, Uniform Observability for a Finite Differences Discretization of a Clamped Beam Equation, IFAC-PapersOnLine, Volume 49, Issue 8, 2016, Pages 315–320, Elsevier, 2nd IFAC Workshop on Control of Systems Governed by Partial Differential Equations, http://dx.doi.org/10.1016/j.ifacol.2016.07.460. (ISI Proceedings)

◆ N. Cindea, S. Micu, I. Rovența, M. Tucsnak, Particle supported control of a fluid-particle system, Journal de Mathématiques Pures et Appliquées 104 (2) (2015), 311-353.

◆ C. P. Niculescu, I. Rovența, Relative Schur-convexity on global NPC spaces, Mathematical Inequalities and Applications 18 (3) (2015), 1111-1119.

◆ I. Rovența, Hardy-Littlewood-Polya's inequality and a new concept of weak majorization, Mediterranean Journal of Mathematics 13 (2) (2016), 573-583.

◆ C. P. Niculescu, I. Rovența, Relative Convexity and Its Applications, Aequationes Mathematicae, Springer Basel 89 (5) (2015), 1389-1400.

◆ M. Malin, I. Rovența, Some remarks on convex networks flows for K-spiders, Mathematical Problems in Engineering, Volume 2015, article ID 710516, 6 pages.

◆ I. F. Bugariu, N. Cindea, S. Micu, I. Rovența, Controllability of the space semi-discrete approximation for the beam equation, IFAC Proceedings Volumes, Volume 47, Issue 3, 2014, Pages 11369–11374, 19th IFAC World Congress, Elsevier. http://dx.doi.org/10.3182/20140824-6-ZA-1003.02286 (ISI Proceedings)

◆ D. Danciu, A. C. Matei, S. Micu, I. Rovența, Nonlinear Feedback Control and Artificial Intelligence Computational Methods applied to a Dissipative Dynamic Contact Problem, In ICINCO 2014 - 11th International Conference on Informatics in Control, Automation and Robotics, vol 1, (2014) ISBN: 978-989-758-039-0, pp. 528-539. (ISI Proceedings)

◆ C. P. Niculescu, I. Rovența, An approach of majorization in spaces with a curved geometry, Journal of Mathematical Analysis and Applications 411 (1) (2014) 119-129.

◆ I. Rovența, Generalized Equilibrium Problems Related to Ky Fan Inequalities, Abstract and Applied Analysis Volume 2014 (2014), Article ID 301901, 6 pages.

◆ F. Bugariu, I. Rovența, Small time uniform controllability of the linear one dimensional Schrodinger equation with vanishing viscosity, Journal of Optimization Theory and Applications 160 (3) (2014), 949-964.

◆ N. Cindea, S. Micu, I. Rovența, M. Tucsnak, Numerical aspects and controllability of a one dimensional fluid-structure model, IFAC Proceedings Volumes Volume 46, Issue 26, 2013, Pages 19-24, 1st IFAC Workshop on Control of Systems Governed by Partial Differential Equations, Elsevier, DOI: 10.3182/20130925-3-FR-4043.00035. (ISI Proceedings)

◆ C. P. Niculescu, I. Rovența, An extension of Chebyshev's algebraic inequality, Math. Reports 15 (65) (2013), No. 1, 91-95.

◆ S. Micu, I. Rovența, M. Tucsnak, Time optimal boundary controls for the heat equation, Journal of Functional Analysis, 263 (2012), 25-49.

◆ S. Micu, I. Rovența, Uniform controllability of the linear one dimensional Schrodinger equation with vanishing viscosity, ESAIM: Control, Optimisation and Calculus of Variations, 18 (2012), 277-293.

◆ I. Rovența, A note on Schur-concave functions, Journal of Inequalities and Applications, Volume 2012, No. 1, 2012:159.

◆ C. P. Niculescu, I. Rovența, Generalized convexity and the existence of finite time blow-up solutions for an evolutionary problem, Nonlinear Analysis: Theory, Methods & Applications, 75 (2012), 270-277.

◆ N. Cindea, S. Micu, I. Rovența, M. Tucsnak, Controllability of a nonlinear hybrid system, Annals of the University of Craiova - Mathematics and Computer Science Series, Vol 38, No 1 (2011), 35-48.

◆ I. Rovența, Large solutions to a singular weighted quasi-linear equations involving the p-Laplacian operator, Proceedings of ISCOPAM 2010, Editors: Ovidiu Carja and Ionel-Dumitrel Ghiba, Editura Universitatii "Alexandru Ioan Cuza" Iasi, 2011, pp. 209-220, ISBN 978-973-703-602-5 .

◆ A. Florea, I. Rovența, Some extensions of optimal Hardy's inequality using estimates of p-Laplacian, Journal of Computational Analysis and Applications 12 (2010), No. 3, 586-592.

◆ I. Rovența, Schur-convexity of a class of symmetric functions, Annals of the University of Craiova - Mathematics and Computer Science Series 37 (2010), No. 1, 12-18.

◆ C. P. Niculescu, I. Rovența, Large Solutions for Semilinear Parabolic Equations Involving Some Special Classes of Nonlinearities, Discrete Dynamics in Nature and Society, Volume 2010, Article ID 491023, 11 pages.

◆ C. P. Niculescu, I. Rovența, The Fan's inequality in metric spaces with non-positive curvature, Applied Mathematics Letters, 22 (2009), 1529-1533.

◆ C. P. Niculescu, I. Rovența, Schauder fixed point theorem in metric spaces with non-positive curvature, Fixed Point Theory and Applications, volume 2009 , article ID 906727, 8 pages, ISSN 1687-1820.

◆ C. P. Niculescu, I. Rovența, The existence of a global attractor for a class of rational maps, Annals of the Academy of the Romanian Scientists, Series on Mathematics and its Applications 1, No. 2, 2009.

◆ I. Rovența, Boundary asymptotic and uniqueness of solution for a problem with p(x)-Laplacian, Journal of Inequalities and Applications, Journal of Inequalities and Applications, Volume 2008, 14 pages.

◆ M. Mihailescu, I. Rovența, Existence and multiplicity of radial solutions for an elliptic boundary value problem on an annulus, Bull. Math. Soc. Sci. Math. Roumanie 50 (2007), No. 4, 331-341.

◆ C. P. Niculescu, I. Rovența, Fan's inequality in the context of Mp-convexity, in vol. Applied Analysis and Differential Equations, Proc. ICAADE 2006, pp. 267-274, World Scientific, Singapore, 2007 (Editors, Ovidiu Carja and Ioan I. Vrabie) ISBN 978-981-270-594-5, ISSN 981-270-594-5.

◆ I. Rovența, A generalization of Ky Fan's theorem, Proceedings of the International Conference of Young Scientists, afiliated to the International Conference "Computer Algebra in Scientific Computing-2006" (CASC 2006), Chisinau, Proc. CASC 2006, pp 181-186, ISBN 978- 9975-70-677-3.

◆ I. D. Ghiba, C. P. Niculescu, I. Rovența, A finite difference approach of Korn’s inequalities, work in progress.

Books

◆ I. Rovența, Recent trends in majorization theory. Applications to wireless communications, Editura Universitaria Craiova, 2015, 111 pages.

Researh Stages

◆ Stage to Universite de Bordeaux, Institut de Mathematiques de Bordeaux, August 26- September 1, 2018, supported by CNCS-UEFISCDI research project PN-III-P1-1.1-MC-2018-1443.

◆ Stage at Universite Clermont Auvergne, Laboratoire de mathematiques Blaise Pascal, February 1- 18, 2018, supported by CNCS-UEFISCDI research project PN-III-P1-1.1-MC-2017-2433.

◆ Stage at Universite Paris Dauphine, CEREMADE, UMR CNRS 7534, June 25 - July 1, 2016, supported by CNCS-UEFISCDI research project PN-II-RU-TE-2014–1109.

◆ Stage at Universite Clermont Auvergne, Laboratoire de mathematiques Blaise Pascal, February 7- 20, 2017, supported by CNCS-UEFISCDI research project PN-II-RU-TE-2014–1109.

◆ Stage at Universite Blaise Pascal, Laboratoire de Mathematiques de Clermont-Ferrand, February 4-18, 2016, supported by „Programme des Professeur Invites Courts Sejours”.

◆ Stage at Universitat Duisburg-Essen, Fakultat fur Mathematik, Nichtlineare Analysis und Modellierung, January 31- February 28, 2015, supported by research project "Burse Universitare în România prin Sprijin European pentru Doctoranzi si Post-doctoranzi (DOC-POSDOC)”, ID CONTRACT POSDRU/159/1.5/S/133255.

◆ Stage at Universite Blaise Pascal, Laboratoire de Mathematiques de Clermont-Ferrand, November 9-18, 2014, suported by CNCS-UEFISCDI bilateral research project, PNII Capacitati Brancusi, Romania-France, PN-II-CT-RO-FR 2012-1-1005.

◆ Stage at Universite Blaise Pascal, Laboratoire de Mathematiques de Clermont-Ferrand, November 4-11, 2013, suported by CNCS-UEFISCDI bilateral research project, PNII Capacitati Brancusi, Romania-France, PN-II-CT-RO-FR 2012-1-1005.

◆ Stage at Universite Blaise Pascal, Laboratoire de Mathematiques de Clermont-Ferrand, May 25-30, 2012, suported by CNCS-UEFISCDI research project PN-II-RU-TE-2011-3-0223.

◆ Stage at Universite Henri Poincare Nancy 1, Institute Elie Cartan, Nancy, France, September 20 - October 2, 2011, suported by Laboratoire Europeen Associe CNRS Franco-Roumain, LEA MATH-MODE Mathematiques and Modelisation, 2011.

◆ Stage at Universite Henri Poincare Nancy 1, Institute Elie Cartan, Nancy, France, June 6-15, 2010, suported by CNCSIS Grant, PNII, Capacitati Brancusi, Modul III, bilateral project Romania-France, Nr. 206/2009.

◆ Stage at Control of Partial and Differential Equations and Applications Trimester, Centre Emile Borel, Institute Henri Poincare, Paris, France, November 2-26, 2010, suported by CNCSIS Grant, PNII, IDEI, Nr. 420/2008.

◆ Stage at Universite Henri Poincare Nancy 1, Institute Elie Cartan, Nancy, France, June 8-20, 2009, suported by CNCSIS Grant, PNII, Capacitati Brancusi, Modul III, bilateral project Romania-France, Nr. 206/2009.

◆ Stage at Mathematik Fakultat of Dortmund, Dortmund, Germany, suported by Socrates Erasmus program, October 2003 -February 2004.

Conferences, Workshops and Summer Schools, Plenary Lectures

◆ Dynamics, Equations and Applications (DEA 2019), AGH University of Science and Technology, September 16 - 20, 2019, Krakow, Poland, Optimal approximation of internal controls for a wave-type problem with fractional laplacian using finite-difference method, invited talk, DEA 2019.

◆ 8th Workshop on Partial Differential Equations, Optimal Design and Numerics, August 16 - 30, 2019, Benasque, Spain, Optimal approximation of internal controls for a wave-type problem with fractional Laplacian, Thematic session on Numerics and control, contributed talk.

◆ XIV-ème colloque franco-roumain de mathématiques appliquées, August 27-31, 2018, Université de Bordeaux, France, organiser (with Pierre Lissy) of the session: Contrôle des EDP.

◆ Atelier de travail en Théorie du potentiel et EDP non-linéaires, l’Institut de Mathématique "Simion Stoilow" de l'Académie Roumaine, November 22 - 23 (2018), Approximation optimale des contrôles internes pour une problème de type hyperbolique ave Laplacien fractionnel, invited talk.

◆ First Romanian Itinerant Seminar on Mathematical Analysis and its Applications (RISMAA), Babes-Bolyai University, Romania, 19-21 April, 2018, Optimal filtration for the approximation of controls, invited talk.

◆ 7th Workshop on Partial Differential Equations, Optimal Design and Numerics, August 20 - September 1, 2017, Benasque, Spain, Approximation of boundary controls for the wave equation, contributed talk.

◆ 23rd International Conference on Difference Equations and Applications (ICDEA 2017), West University of Timisoara, Romania, 24-28 July, 2017, The approximation of boundary controls for the one-dimensional wave equation, invited talk.

◆ Plenary lecture at Laboratoire de Mathematiques de Clermont-Ferrand, Universite Blaise Pascal, Optimal filtration for approximation of boundary controls for the one-dimensional wave equation using finite differences, February 14, 2017.

◆ XIII − eme Colloque Franco − Roumain de Mathematiques Appliquees, Iasi, August, 25-29, 2016, Session: Analysis and control for PDE’s, Approximation of the controls for hinged and clamped beam equations, invited talk.

◆ Conference of Applied and Industrial Mathematics, CAIM 2016, Section: PDE’s with applications in Mechanics, Biology, Craiova, September 17-19, 2016, Approximation of the boundary controls for the wave equation, contributed talk.

◆ Emerging trends in Applied Mathematics and Mechanics, ETAMM 2016, May 30 – June 3, Perpigan France, Approximation of the controls for hinged and clamped beam equations, contributed talk.

◆ Diaspora in Cercetarea Stiintifica ̧si Invatamantul Superior din Romania - Diaspora ̧si prietenii sai 2016 Workshop: Sisteme Dinamice. Teoria ̧si aplicatii. Timisoara, April 25-27, 2016, Approximation of the controls for the beam equation, invited plenary talk.

◆ ICAMNM 2016, Craiova 15-17 April, Approximation of the controls for beam equation with different boundary conditions, contributed talk.

◆ Conférence Contrôle des EDP et applications, CIRM, Marseille, November 9-13, 2015.

◆ Journées EDP Rhône-Alpes-Auvergne, Université Blaise Pascal, Clermont-Ferrand, November 19-20, 2015.

◆ Plenary lecture at Universitat Duisburg-Essen, Fakultat fur Mathematik, Nichtlineare Analysis und Modellierung, Oberseminar analysis, Majorization in spaces with global nonpositive curvature, February 19, 2015.

◆ Plenary lecture at Universitat Duisburg-Essen, Fakultat fur Mathematik, Nichtlineare Analysis und Modellierung, Oberseminar analysis, Relative convexity and relative Schur convexity with applications, February 13, 2015.

◆ 19th World Congress of the International Federation on Automatic Control, Cape Town, South Africa, August 24-29, 2014, communication with the title "Controllability of the semi discrete space approximation for the beam equation", contributed talk.

◆ Mathematical Inequalities and Applications, Trogir, Croatia, June 22-26, 2014, communication with the title "An Approach of Schur convex-concave functions", contributed talk.

◆ The Twelfth Conference on Nonlinear Analysis and Applied Mathematics, Targoviste, Romania, June 13-14, 2014, communication with the title "A new approach on weak majorization and applications", contributed talk.

◆ The Joint Meeting on Quantum Field Theory and Nonlinear Dynamics, communication with the title "The controllability of a system modeling the motion of a swimmer moving in a viscous fluid", Sinaia September, 24-27, 2014, contributed talk in Nonlinear Dynamics session.

◆ Joint International Conference of Doctoral and Post-Doctoral Researchers, communication with the title "The convex functions on spiders", Craiova September, 12-13, 2014, contributed talk in Exact Sciences session.

◆ Plenary lecture at Laboratoire de Mathematiques de Clermont-Ferrand, Universite Blaise Pascal, Controllability of a one dimensional fluid-structure model, November 9, 2013.

◆ Ist IFAC Workshop on Control Systems Modeled by Partial Differential Equations, CPDE 2013, September 25-27, Institute Henri Poincare, Paris, France, comunication with the title "Numerical aspects and controllability of a one dimensional fluid-structure model", regular talk in Controllability and observability session.

◆ 21th Conference on Applied and Industrial Mathematics, September19-22, Bucharest 2013, communication with the title "Generalized equilibrium problems related to Ky-Fan's inequalities", regular talk in Operational research session.

◆ 5th Workshop on Partial Differential Equations, Optimal Design and Numerics, August 25 - September 5, 2013, Benasque, Spain, comunication with the title "Controllability of a fluid-structure model", regular talk in Fluid-structure interaction thematic session.

◆ Thematic school of the GDRE ConEDP: Control of PDE's interactions and applications challenges, November 5-9, Centre International de Rencontres Mathematiques (CIRM), Luminy, France.

◆ Spring School in Nonlinear Partial Differential Equations, Universite Libre de Bruxelles, May 30–June 6, 2012.

◆ 33th International Summer School of Automatic Control, Modeling and Control of Distributed Parameter Systems, Gipsa-Lab Departament Automatique, Grenoble, France, September 10-14, 2012.

◆ 41th Congres d’Analyse Numerique CANUM 2012, Superbesse, Puy-de-Dome May 21-25, Laboratoire de Mathematiques de Clermont-Ferrand, communication with the title "On the solvability of an abstract variational system”.

◆ 10th International Symposium on Generalized Convexity/Monotonicity, Cluj, August 22-27, 2011, communication with the title "An Applications of generalized convexity to the existence of finite time blow-up solutions for an evolutionary problem".

◆ Workshop on "Partial differential equations, optimal design and numerics" 2011, August 28- September 09, 2011, Centro de Ciencias de Benasque Pedro Pasqual, Organizers: G. Buttazzo (U. Pisa) and E. Zuazua (BCAM).

◆ 7th Congress of Romanian Mathematicians, Brasov, June 29 - July 5, 2011, communication with the title "Generalized convexity and the existence of finite time blow-up solutions for semilinear parabolic equations".

◆ International Student Conference on pure and Applied Mathematics, ISCOPAM 2010, Iasi, July 12-16, 2010, communication with the title "Uniform controllability of the linear one dimensional Schrodinger equation with viscosity".

◆ Sesiunea stiintifica de toamna 2010 a Academiei Oamenilor de Stiinta din Romania, Universul stiintei acasa la romani, Mioveni, 22-24 septembrie, 2010, comunicarea cu titlul "Controlabilitatea uniforma a ecuatiei liniare de tip Schrodinger cu un termen de vascozitate".

◆ National Mathematics Conference for University Students, Iasi, July 2009, communication with the title "Schauder fixed point theorem in global NPC spaces".

◆ Mathematics and Informatics Technologies: Research and Education, MITRE-2008, Chisinau, October 1-4, 2008, communication with the title "Fixed point theorems in context of spaces with non-positive curvature ".

◆ National Mathematics Conference for University Students, Iasi, July 2008, communication with the title "Functii Schur-convexe. Inegalitati simetrice".

◆ 10th International Conference on Discrete Mathematics Convexity and Graph Theory, Universitat Dortmund, Germany, July 14-18, 2007, communication with the title "Fan's inequality in metric spaces with nonpositive curvature".

◆ 6th Congress of Romanian Mathematicians, Bucharest, June 28 - July 4, 2007, communication with the title "The existence of a global atractor for a class of rational maps".

◆ National Mathematics Conference for University Students, Iasi, July, 2007, communication with the title "Existenta unui atractor global pentru o clasa de aplicatii rationale".

◆ International Conference on Applied Analisys and Differential Equations, (ICAADE-2006), Iasi, September 4-9, 2006, communication with the title " Fan's inequality in the context of Mp-convexity".

◆ International Conference on Applied Analisys and Differential Equations, (ICAADE-2006), Iasi, September 4-9, 2006, communication with the title "Existence and multiplicity of radial solutions for an elliptic boundary value problem on an annulus".

◆ CERCMS International Conference of Young Scientist affiliated to the International Conference Computer Algebra in Scientific Computing-2006, Proc. CASC 2006, communication with the title "A Generalization of Ky Fan's Theorem".

◆ National Mathematics Conference for University Students, Iasi, July, 2006, communication with the title "O geneneralizare a Teoremei Ky Fan in cazul Mp Convexitatii".

◆ National Mathematics Conference for University Students, Iasi, May,2005, communication with the title "Echilibrul Nash si Algoritmul Lemke-Howson".