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Leszek Gasiński Conferences 2008 02.07-09.07 'Fifth World Congress of Nonlinear Analysts', Orlando, FL, USA. Lecture: 'Existence and Multiplicity of Solutions for Second Order Periodic Systems with the p-Laplacian and a Nonsmooth Potential'. 2008 18.05-21.05 '7th AIMS International Conference on Dynamical Systems, Differential Equations and Applications', Arlington, TX, USA. Lecture 1.: 'Nodal and Multiple Constant Sign Solutions for Resonant p-Laplacian Equations with a Nonsmooth Potential'. Lecture 2.: 'Existence and Multiplicity of Solutions for Neumann p-Laplacian-Type Equations'. 2007 23.07-27.07 '23rd IFIP TC 7 Conference on System Modelling and Optimization', Krakow, Poland. Lecture: 'Scalar Periodic Problems at Resonance with p-Laplacian-Like Operator'. 2006 7.07-8.07 'Second International Conference on Nonsmooth/Nonconvex Mechanics with Applications in Engineering', Thessaloniki, Greece. Lecture: 'Semilinear Hemivariational Inequalities with Hysteresis'. 2006 25.06-28.06 'AIMS' Sixth International Conference on Dynamical Systems, Differential Equations and Applications', Poitiers, France. Lecture: 'Existence Results for Quasilinear Hemivariational Inequalities at Resonance'. 2006 23.04-29.04 'Spring School on Variational Analysis ', Paseky, Czech Republic. 2005 18.07-22.07 '22nd IFIP TC 7 Conference on System Modeling and Optimization', Torino, Italy. Lecture: 'Semilinear Hemivariational Inequalities with Hysteresis'. 2004 20.09-24.09 '12 French-German-Spanish Conference on Optimization', Avignon, France. Poster: 'Evolution Hemivariational Inequality of Wave-Type with Hysteresis'. 2004 30.06-7.07 'Fourth World Congress of Nonlinear Analysts WCNA-2004', Orlando, USA. Lecture: 'Evolution Hemivariational Inequality with Hysteresis'. 2004 16.06-19.06 'Phenomenological and Mathematical Modelling in Structural Instabilities', Pomona, USA. Lecture: 'Nonlinear Hemivariational Inequalities with Eigenvalues near Zero'. 2003 20.09-24.09 'Phenomenological and Mathematical Modelling in Structural Instabilities', Udine, Italy. 2003 21.07-25.07 '21st IFIP TC 7 Conference on System Modeling and Optimization', Sophia Antipolis, France. Lecture: 'Evolution Hemivariational Inequality with Hysteresis and Optimal Control Problem'. 2003 22.04-9.05 'Workshop and Conference on Recent Trends in Nonlinear Variational Problems', Trieste, Italy. 2002 9.09-13.09 'French - German - Polish Conference on Optimization', Cottbus, Germany. Lecture: 'Optimal Control Problem of Boltza Type for Evolution Hemivariational Inequality with Hysteresis'. 2002 5.07-6.07 'International Conference on Nonsmooth/Nonconvex Mechanics with Applications in Engineering', Thessaloniki, Greece. Lecture: 'An Optimal Control Problem Described by Hyperbolic Hemivariational Inequalities'. 2002 5.06-8.06 'Free Boundary Problems: Theory and Applications', Trento, Italy. 2002 24.05-27.05 'The Fourth International Conference on Dynamical Systems and Differential Equations', Wilmington, USA. Lecture: 'Optimal Control Problem of Bolza-type for Hyperbolic Hemivariational Inequality'. 2002 20.05-22.05 'The 5th IASTED International Conference: Control and Applications', Cancun, Mexico. Lecture: 'An Optimal Control Problem Described by Wave-type Hyperbolic Hemivariational Inequalities'. 2001 19.11-21.11 'Methods and Computer Systems in Scientific Research and Engineering Design', Kraków, Poland. Lecture: 'Hemivariational Inequalities with Hysteresis Operator'. 2001 9.07-13.07 'Workshop in nonlinear differential equations', Bergamo, Italy. 2001 2.07-6.07 'Recent Advances in Boundary Element Methods and their Solid Mechanics Applications', Udine, Italy. 2000 19.07-26.07 'The Third World Congress of Nonlinear Analysts', Catania, Italy. Lecture: 'Hyperbolic Hemivariational Inequalities'. 2000 19.06-24.06 'Topological and Variational Methods in Nonlinear Analysis', Będlewo, Poland. Lecture: 'Critical Point Theory in Solving Semilinear Hemivariational Inequalities at Resonance'. 1999 14.09-18.09 'German-Polish Conference on Optimization - Methods and Applications', Żagań, Poland. Lecture: 'Methods in Optimal Shape Design Problems Described by Hemivariational Inequalities'. 1999 12.07-16.07 '19th IFIP TC7 Conference on System Modelling and Optimization', Cambridge, England. Lecture: 'Mapping Method in the Optimal Shape Design Problems Governed by Hemivariational Inequalities'. 1999 25.03-30.03 'International School on Differential Problems having Solutions of Infinite Energy. Week on the Ginzburg-Landau Model', Roma, Italy. 1998 28.03-03.04 'III International Summer School on the Calculus of Variations', Pisa, Italy. 1998 15.09-18.09 'IV National Conference on Applications of Mathematics in Biology and Medicine', Zwierzyniec, Poland. Lecture: 'Determination of a Death Rate In Age-Structured Population Dynamics'. 1997 15.09-18.09 'Topological, Variational & Singularities Methods in Nonlinear Analysis', Jurata, Poland. Lecture: 'Methods in Optimal Shape Design Problems Governed by Variational and Hemivariational Inequalities'. 1997 16.06-27.06 'Workshop on Conley Index Theory', organized by Banach Center, Warsaw, Poland. 1996 24.09-27.09 'II National Conference on Application of Mathematics in Biology and Medicine', Kościelisko, Poland. 1995 'Differential Equations', Cracow, Poland. 1994 'Algebraic Topology', Ciechocinek, Poland.