Conferences and talks

# Forthcoming events

**Member of the Scientific Committee:**Viennese Conference on Optimal Control and Dynamic Games (VC2025), TU Wien, Austria, July 2025**Invited lecture series:**MATRIX workshop Splitting Algorithms – Advances, Challenges, and Opportunities, MATRIX Institute, The University of Melbourne, Australia, February 10-21, 2025**Invited lecture:**Workshop on Proof Mining 2024, Darmstadt, Germany, September 4-6, 2024**Member of the Scientific Committee:**25th International Symposium on Mathematical Programming (ISMP), Montréal, Canada, July 21-26, 2024**Invited plenary lecture:**International Conference on Mathematics and Computer Science (MACOS), Transilvania University of Braşov, Romania, June 13-15, 2024**Invited lecture:**Workshop on ADVANCES IN NONLINEAR ANALYSIS AND OPTIMIZATION, Erice, Italy, May 23-29, 2024**Invited lecture:**Computational Mathematics and Applications Seminar, University of Oxford, United Kingdom, May 9, 2024

**Invited plenary lecture:***Fast Continuous Time Methods for Monotone Equations*, Workshop on Nonsmooth Optimization and Applications (NOPTA 2024), University of Antwerp, Belgium, April 8-13, 2024**Invited lecture:***Fast Continuous Time Methods for Monotone Equations*, AKOR Seminar, TU Wien, Austria, March 21, 2024**Training:**How Do We Research in Exact Sciences?, Babeş-Bolyai University Cluj-Napoca, Romania, February 15-21, 2024**Invited lecture (online):***Fast Optimistic Continuous and Discrete Time Methods for Monotone Equations and Convex Optimization Problems*, Nanjing University, China, December 20, 2023**Invited lecture:***Fast Optimistic Continuous and Discrete Time Methods for Monotone Equations and Convex Optimization Problems*, Workshop on "Nonsmooth Optimization and Variational Analysis", The Hong Kong Polytechnic University, Hong Kong, December 4-6, 2023**Invited lecture:***Fast Optimistic Methods for Monotone Equations and Convex Optimization Problems*, Oberseminar "Numerical Optimization", University of Konstanz, Germany, November 28, 2023**Invited lecture:***Fast Optimistic Continuous and Discrete Time Methods for Monotone Equations*, "Challenges in Continuous Optimization and its Applications: Celebrating Marc Teboulle’s 70th Birthday", Tel Aviv University, Israel, September 11-14, 2023*Fast Optimistic Gradient Descent Ascent method in Continuous and Discrete Time*, 11th Applied Inverse Problems Conference, Göttingen, Germany, September 4-8, 2023**Invited plenary lecture:***Fast Optimistic Continuous and Discrete Time Methods for Monotone Equations*, 17th International Conference on Applied Mathematics and Computer Science, Technical University of Cluj-Napoca, Romania, July 11-13, 2023**Invited lecture (online):***Fast Optimistic Continuous and Discrete Time Methods for Monotone Equations and Convex Optimization Problems*, Research Seminar of the State Key Laboratory for Autonomous Intelligent Unmanned Systems, Beijing Institute of Technology, July 10, 2023**Invited lecture series:***Numerical Methods for Convex and Nonconvex Optimization*, 1st Alps-Adriatic Inverse Problems Summer School, University of Klagenfurt, Austria, July 3-4, 2023*Fast Optimistic Gradient Descent Ascent Method in Continuous and Discrete Time*, SIAM Conference on Optimization, Seattle, USA, May 31-June 3, 2023**Invited lecture:***Fast Continuous and Discrete Time Methods for Convex Optimization Problems with Linear Constraints*, Optimization and Control in Burgundy, University of Dijon, France, May 9-11, 2023**Invited lecture:***Fast Continuous and Discrete Time Methods for Convex Optimization Problems with Linear Constraints*, Optimization and Control in Burgundy, University of Dijon, France, May 9-11, 2023**Invited lecture:***Fast Continuous and Discrete Time Methods for Convex Optimization Problems with Linear Constraints*, Corvinus Operations Research Seminar, Corvinus University of Budapest, Hungary, November 24, 2022**Invited lecture:***Fast Optimistic Gradient Descent Ascent Method in Continuous and Discrete Time*, Online Conference "Numerical Analysis, Numerical Modeling, Approximation Theory (NA-NM-AT 2022)", Tiberiu Popoviciu Institute of Numerical Analysis (Romanian Academy), Cluj-Napoca, Romania, October 26-28, 2022**Special invited lecture:***Fast Continuous and Discrete Time Methods for Convex Optimization Problems with Linear Constraints*, RAMP Symposium on Mathematical Optimisation, Research Association of Mathematical Programming (RAMP) of the Operations Research Society of Japan, October 6, 2022**Invited lecture:***Fast Optimistic Gradient Descent Ascent Method in Continuous and Discrete Time*, International Seminar "Optimization and Variational Analysis" (OVA11), University of Alicante, Spain, September 22-23, 2022**Invited keynote lecture:***Fast Primal-Dual Algorithms for Convex Optimization*, International Conference on Digital Image Processing and Machine Learning (ICDIPML 2022), University of Phayao, Thailand, September 8-9, 2022**Invited keynote lecture:***Fast Methods for Linearly Constrained Convex Optimization Problems in Continuous and Discrete Time*, TraDE-OPT Workshop on Algorithmic and Continuous Optimization, Université catholique de Louvain, Belgium, July 4-8, 2022**Invited lecture (online):***Fast Augmented Lagrangian Method in Continuous and Discrete Time*, Logic, Optimization & Security Seminar, Faculty of Mathematics and Computer Science, University of Bucharest, Romania, June 28, 2022**Invited keynote lecture (online):***Fast Augmented Lagrangian Method in Continuous and Discrete Time*, The 7th International Conference on Optimization, Simulation and Control (ICOSC'2022), Ulaanbaatar, Mongolia, June 20-22, 2022**Invited keynote lecture:***Fast Augmented Lagrangian Method in Continuous and Discrete Time*, FGP’22 - French German Portuguese Conference on Optimization 2022, Porto, Portugal, May 3-6, 2022**Invited lecture (online):***The Fast Augmented Lagrangian Method in Continuous and Discrete Time*, Seminar on Variational Analysis and Optimization, University of Michigan, March 31, 2022*The Forward-Backward-Forward Algorithm for Solving Minimax Problems with Application to GANs*, SIAM Conference on Imaging Science, Berlin, Germany, March 21-25, 2022**Invited keynote lecture (online):***Continuous Time Approaches to Structured Convex Minimization Problems*, International Conference on Nonlinear Applied Analysis and Optimization, Varanasi, India, December 21-23, 2021**Invited keynote lecture (online):***Continuous Time Approaches to Structured Convex Minimization Problems*, Optimization Special Session of the 65th Annual Meeting of the Australian Mathematical Society, December 7-10, 2021**Invited lecture (online):***Primal-Dual Dynamical Approaches to Structured Convex Minimization Problems*, NCSU Differential Equations/Nonlinear Analysis Seminar, North Carolina State University, USA, October 27, 2021**Invited keynote lecture (online):***Numerical Algorithms for Structured Nonsmooth and Nonconvex Optimization Problems*, (Online) Continuous Optimization Stream of the UK 63rd Annual Conference in Operational Research, September 14-16, 2021**Invited lecture (online):***Factorization of Completely Positive Matrices Using Iterative Projected Gradient Steps*, Optimization: Theory, Algorithms, Applications Lecture Series, Fields Institute, Toronto, and University of Waterloo, Canada, September 9, 2021*Inertial Proximal Block Coordinate Method for Nonsmooth and Nonconvex Sum-of-Ratios Optimization*SIAM Conference on Optimization, July 20-23, 2021**Invited lecture (online):***Continuous and Discrete Time Approaches to Nonsmooth Nonconvex Optimization Problems*, Brazilian Optimization Seminar, March 23, 2021**Invited lecture (online):***A Primal-Dual Dynamical Approach to Structured Convex Minimization Problems*, "VARIATIONAL METHODS IN NONLINEAR PHENOMENA", University of Naples Federico II, Italy, September 23-25, 2020**Invited lecture:***A Primal-Dual Dynamical Approach to Structured Convex Minimization Problems*, Workshop "Nonsmooth Optimization", Special Semester on Optimization, RICAM, Linz, Austria, November 25-27, 2019**Invited lecture:***A Primal-Dual Dynamical Approach to Structured Convex Minimization Problems*, Séminaire Pluridisciplinaire d'Optimisation de Toulouse, Toulouse, France, November 18, 2019**Invited semi-plenary lecture:***Proximal Algorithms for Nonsmooth Nonconvex Optimization*, The Sixth International Conference on Continuous Optimization (ICCOPT 2019), Berlin, Germany, August 5-8, 2019**Invited lecture:***A Primal-Dual Dynamical Approach to Structured Convex Minimization Problems*, 2019 CUHK-Shenzhen Workshop on Optimization Theory and Applications, Shenzhen, China, July 31 - August 2, 2019*Some Open Questions About the Minimization of Structured Nonsmooth and Nonconvex Functions*, 71st Workshop ADVANCES IN NONSMOOTH ANALYSIS AND OPTIMIZATION of the International School of Mathematics G. Stampacchia, Erice, Italy, 24 June - 1 July, 2019**Invited lecture:***Proximal Algorithms for Nonconvex and Nonsmooth Minimization Problems*, Research Seminar Series in Statistics and Mathematics, Vienna University of Economics and Business, Vienna, May 3, 2019**Invited lecture:***Four (Plus One) Open Questions About the Minimization of Structured Nonsmooth and Nonconvex Functions*, 2nd Workshop on "Operator Splitting Methods in Data Analysis", Flatiron Institute, New York, USA, March 20-22, 2019**Invited lecture:***Proximal Algorithms for Nonconvex and Nonsmooth Optimization Problems*, The Annual Workshop of the CNRS Group of Research "Mathematics of Optimization and Applications", University of Pau, France, October 17-19, 2018**Invited plenary lecture:***A General Double-Proximal Gradient Algorithm for D.C. Programming*, IX International Conference Optimization and Applications (OPTIMA-2018), Petrovac, Montenegro, October 1-5, 2018**Invited lecture:***A Proximal Minimization Algorithm for Structured Nonconvex and Nonsmooth Problems*, The 10th Asian Conference on Fixed Point Theory and Optimization, Chiang Mai University, Thailand, July 16-18, 2018**Invited lecture:***Primal-Dual Splitting Algorithms: From Convex to Nonconvex Optimization Problems*, Workshop on “New Trends in Optimization”, Naresuan University, Phitsanulok, Thailand, July 13, 2018*The Continuous Proximal-Gradient Approach in the Nonconvex Setting*, The 23rd International Symposium on Mathematical Programming, Bordeaux, France, July 1-6, 2018**Invited lecture:***A Proximal Minimization Algorithm for Structured Nonconvex and Nonsmooth Problems*, DIMACS Workshop on ADMM and Proximal Splitting Methods in Optimization, DIMACS Center, Rutgers University, NJ, USA, June 11-13, 2018*The Proximal Alternating Direction Method of Multipliers in the Nonconvex Setting: Convergence Analysis and Rates*, The 9th International Conference "Inverse Problems: Modeling and Simulation", Malta, May 21-25, 2018**Invited lecture:***On the Boundedness of the Sequence of Iterates Generated by the Nonconvex ADMM Algorithm*, Workshop on "Operator Splitting Methods in Data Analysis", SAMSI, Raleigh, NC, USA, March 21-23, 2018**Invited lecture:***ADMM for Monotone Operators: Convergence Analysis and Rates*, "German-Israeli Research Workshop on Optimization", Technion Haifa, Israel, October 16-19, 2017**Invited lecture series:***Splitting Algorithms in Nonsmooth Convex and Nonconvex Optimization*, Autumn School on Nonsmooth Structures in Mathematical Models 2017, WIAS Berlin, Germany, October 11-14, 2017**Invited lecture:***The Inertial Proximal-Gradient Algorithm for Nonconvex Nonsmooth Optimization Problems*, Annual Meeting of the DFG Priority Programme 1962, Hotel Sommerfeld, Kremmen, Germany, October 9-11, 2017**Invited lecture:***A General Double-Proximal Gradient Algorithm for D.C. Programming*, Workshop on "Splitting Algorithms, Modern Operator Theory, and Applications", Casa Matematica Oaxaca, Oaxaca, Mexico, September 17-22, 2017**Invited plenary lecture:***Proximal Algorithms for Nonconvex Nonsmooth Optimization Problems with KL Functions*, 7th German-Polish Conference on Optimization, Bedlewo, Poland, August 28 - September 2, 2017**Invited lecture:***A General Double-Proximal Gradient Algorithm for D.C. Programming*, The Third International Conference on Engineering and Computational Mathematics (ECM2017), Hong Kong Polytechnic University, May 31 - June 2, 2017**Invited lecture:***The Proximal-Gradient Algorithm for Fractional Programming: Convergence Analysis and Rates*, 2017 HKBU Workshop on Optimization, Hong Kong Baptist University, May 30, 2017**Invited lecture:***The Proximal-Gradient Approach in the Nonconvex Setting From Both a Discrete and Continuous Perspective*, Workshop on "Nonsmooth optimization and its applications", Hausdorff Center for Mathematics, Bonn, Germany, May 15-19, 2017**Invited lecture:***Convex Optimization Methods for Signal Processing*, Seminar of the Numerical Harmonic Analysis Group, University of Vienna, Austria, March 15, 2017**Invited lecture:***On the Minimization of the Sum of a Nonsmooth with a Smooth Function in the Nonconvex Setting*, Research Seminar Optimization and Approximation, Faculty of Mathematics, Chemnitz University of Technology, January 25, 2017**Invited lecture:***The Minimization of the Sum of a Nonsmooth with a Nonconvex Smooth Function from Both a Continuous and Discrete Perspective*, International Workshop "New Trends in Optimization and Variational Analysis for Applications", Quy Nhon, Vietnam, December 7-10, 2016**Invited lecture:***Proximal-Gradient Algorithms for Fractional Programming*, Seminar of the Research Group on Analysis and Optimization, "Babeş - Bolyai" University Cluj-Napoca, Romania, November 3, 2016**Invited lecture:***Primal-Dual Algorithms for Convex Optimization Problems with Complex Structures*, MOD Seminar, XLIM Research Institute, University of Limoges, France, September 30, 2016**Invited lecture:***Proximal-Gradient Algorithms for Fractional Programming*, International Workshop "Advances in Convex Analysis and Optimization", International School of Mathematics G. Stampacchia, Erice, Italy, July 5 - July 12, 2016**Invited lecture:***Primal-dual Splitting Algorithms for Convex Optimization with Applications to Image Processing*, CEMSE Seminar, KAUST, Saudi Arabia, June 5, 2016**Invited lecture:***Primal-Dual Proximal-Type Algorithms for the Minimization of Complexly Structured Nonsmooth Convex Functions*, The 7th International Seminar on Optimization and Variational Analysis (OVA7), Alicante, Spain, June 1-3, 2016**Invited lecture series:***Recent Advances in Numerical Algorithms for Convex Optimization*, KTH Royal Institute of Technology, Stockholm, Sweden, May 15-18, 2016**Invited lecture:***A Primal-Dual Douglas-Rachford Type Algorithm for Nonsmooth Convex Optimization Problems with Complex Structures*, Seminar of the Research Group on Analysis and Optimization, "Babeş - Bolyai" University Cluj-Napoca, Romania, March 24, 2016**Invited lecture:***A Proximal-Gradient Algorithm for the Minimization of the Sum of Two Nonconvex Functions*, Workshop "Inverse Problems in the ALPS", Obergurgl, Austria, March 15-19, 2016**Invited lecture:***Primal-Dual Splitting Algorithms for Convex Optimization with Applications to Image Processing*, Acoustics Research Institute, Vienna, Austria, February 24, 2016**Invited lecture:***Primal-Dual Splitting Algorithms for Convex Optimization with Applications to Image Processing*, Faculty of Mathematics and Information Science, Warsaw University of Technology, Warsaw, Poland, December 2, 2015**Invited lecture:***A Douglas-Rachford Type Algorithm for Nonsmooth Convex Optimization Problems with Complex Structures*, Institute of Mathematics of the Polish Academy of Sciences, Warsaw, Poland, December 1, 2015**Invited plenary lecture:***A Douglas-Rachford Type Algorithm for Nonsmooth Convex Optimization Problems with Complex Structures*, 12 International Seminar on Optimization and Related Areas, Lima, Peru, October 5-9, 2015**Invited lecture series:***Recent Developments in Convex Optimization*, Naresuan University, Phitsanulok, Thailand, September 14-16, 2015**Invited lecture:***Splitting Algorithms for Nonsmooth Convex Optimization Problems with Complex Structures*, Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand, September 13, 2015**Invited lecture:***On the Solving of Nonsmooth Convex Optimization Problems with Complex Structures*, International Workshop "Variational Analysis and Applications", International School of Mathematics G. Stampacchia, Erice, Italy, August 28 - September 5, 2015**Invited lecture:***Primal-Dual Algorithms for Complexly Structured Nonsmooth Convex Optimization Problems*, International Conference on Nonlinear Operators, Differential Equations and Applications, Cluj-Napoca, Romania, July 14-17, 2015**Invited lecture:***Splitting-Verfahren zur Lösung von nichtglatten konvexen Optimierungsaufgaben mit komplexen Strukturen*, Universität Siegen, Germany, July 8, 2015**Invited lecture:***Primal-Dual Algorithms for Complexly Structured Nonsmooth Convex Optimization Problems*, The Eighth Congress of Romanian Mathematicians, Iaşi, Romania, June 26 - July 1, 2015**Invited lecture:***Qualification Conditions Formulated via the Quasi-Relative Interior in Convex Programming*, Fitzpatrick Workshop, South Pacific Continuous Optimization Meeting (SPCOM 2015), Adelaide, Australia, February 8-12, 2015**Invited plenary lecture:***Primal-Dual Methods for Solving Complexly Structured Nonsmooth Convex Optimization Problems*, South Pacific Continuous Optimization Meeting (SPCOM 2015), Adelaide, Australia, February 8-12, 2015**Invited lecture:***A Splitting Method for Solving Complexly Structured Nonsmooth Convex Optimization Problems*, Friedrich-Schiller-Universität Jena, Germany, January 9, 2015**Invited lecture series:***Proximal Splitting Methods in Convex Optimization*, German-Mongolian Institute for Resources and Technology, Ulan Bator, Mongolia, September 10-11, 2014**Invited lecture:***On Primal-Dual Splitting Algorithms for Monotone Inclusions with Applications to Convex Optimization*, Department of Applied Mathematics, National Sun Yat-sen University, Kaohsiung, Taiwan, July 9, 2014**Invited lecture:***Primal-duale Splitting-Verfahren zur Lösung von nichtglatten konvexen Optimierungsaufgaben*, Universität Augsburg, Germany, May 30, 2014*Forward-Backward and Tseng's Type Penalty Schemes for Monotone Inclusion Problems*, SIAM Conference on Optimization, San Diego, USA, May 19-22, 2014 (co-author: E.R. Csetnek)**Invited lecture:***Primal-duale Splitting-Verfahren für monotone Inklusionen und deren Anwendung in der konvexen Optimierung*, Universität Heidelberg, Germany, January 16, 2014**Antrittsvorlesung:***Convex Optimization from the Perspective of Maximal Monotone Operators*, Universität Wien, Austria, January 15, 2014**Invited lecture:***Primal-duale Splitting-Verfahren für monotone Inklusionen und deren Anwendung in der konvexen Optimierung*, Universität Mannheim, Germany, November 14, 2013**Invited plenary lecture:***On primal-dual splitting algorithms for monotone inclusions with applications to convex optimization*, 9th International Conference on Applied Mathematics, Baia Mare, Romania, September 25-28, 2013*A Primal-Dual Splitting Algorithm for Finding Zeros of Sums of Maximally Monotone Operators*, 26th IFIP TC7 Conference 2013 on System Modelling and Optimization, Klagenfurt, Austria, September 8-13, 2013 (co-author: E.R. Csetnek, A. Heinrich)**Invited lecture:***Approaching the Maximal Monotonicity of Bifunctions via Representative Functions*, South Pacific Optimization Meeting, Newcastle, Australia, February 9-12, 2013**Invited lecture:***Convex Analysis in Imaging*, Optimization of Planet Earth Afternoon, Mathematics of Planet Earth 2013, Newcastle, Australia, February 9-12, 2013**Invited lecture:***A Fenchel Duality-Based Double Smoothing Technique for Solving Convex Optimization Problems with Applications to Image Processing*, Canberra Symposium on Regularisation Integrating Chemnitz Symposium on Inverse Problems on Tour, Canberra, Australia, November 19-24, 2012**Invited lecture:***Monotone Operatoren aus dem Blickwinkel der konvexen Optimierung*, Universität Salzburg, Austria, November 6, 2012**Invited lecture:***Auf Fenchel-Dualität basierende Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben mit Anwendungen in der Bildverarbeitung*, Johannes Kepler Universität Linz, Austria, October 22, 2012*Approaching the Maximal Monotonicity of Bifunctions via Representative Functions*, 21st International Symposium on Mathematical Programming, Berlin, Germany, August 19-24, 2012 (co-author: S.-M. Grad)**Invited lecture:***Auf Fenchel-Dualität basierende doppelte Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben mit Anwendungen in der Bildverarbeitung*, Forschungsseminar Algorithmische und Diskrete Mathematik, Fakultät für Mathematik, Technische Universität Chemnitz, Chemnitz, Germany, June 27, 2012*Approaching the Maximal Monotonicity of Bifunctions via Representative Functions*, Constructive Nonsmooth Analysis and Related Topics, Euler International Mathematical Institute, St. Petersburg, Russia, June 18-23, 2012 (co-author: S.-M. Grad)**Invited lecture series:***Convex Analysis with Applications in Inverse Problems*, Institut für Numerische und Angewandte Mathematik, Georg-August-Universität Göttingen, Germany, June 11-14, 2012**Invited lecture:***Auf Fenchel-Dualität basierende doppelte Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben mit Anwendungen in der Bildverarbeitung*, Universität zu Köln, Germany, May 07, 2012**Invited lecture:***Techniken der doppelten Regularisierung zur Lösung konvexer Optimierungsaufgaben mit Anwendung in der Bildverarbeitung*, Universität Koblenz-Landau, Germany, March 22, 2012**Invited lecture:***Über die Implementierung von doppelten Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben*, Universität Bremen, Germany, January 31, 2012**Invited lecture:***Über die Implementierung von doppelten Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben*, Ernst-Moritz-Arndt-Universität Greifswald, Germany, January 27, 2012**Invited lecture:***A Fenchel Duality-Based Double Smoothing Technique for Solving Convex Optimization Problems*, Seminar on Applied Mathematics, Institute for Numerical and Applied Mathematics, Georg-August-Universität Göttingen, Germany, January 24, 2012**Invited lecture:***A Double Smoothing Technique for Solving Convex Optimization Problems with Applications to Image Processing*, Leopold-Franzens-Universität Innsbruck, Austria, January 12, 2012**Invited lecture:***A Fenchel Duality-Based Approach for Solving Optimization Problems Arising in Supervised Learning*, Konrad-Zuse-Zentrum für Informationstechnik, Berlin, Germany, January 5, 2012**Invited lecture:***Monotone Operatoren aus dem Blickwinkel der konvexen Optimierung*, Fakultät für Mathematik, Informatik und Naturwissenschaften, RWTH Aachen, Germany, December 12, 2011*Approaching the Maximal Monotonicity of Bifunctions via Representative Functions*, International Conference on Optimization, Theory, Algorithms and Applications in Economics, Centre de Recerca Matemàtica, Barcelona, Spain, October 24-28, 2011 (co-author: S.-M. Grad)**Invited lecture:***A Fenchel Duality-Based Approach for Solving Optimization Problems Arising in Supervised Learning*, Applied Mathematics Seminar, University of New South Wales, Sydney, Australia, September 22, 2011*Error Bound Results for Convex Inequality Systems Via Conjugate Duality*, 10th International Symposium on Generalized Convexity/Monotonicity, Cluj-Napoca, Romania, August 22-27, 2011 (co-author: E.R. Csetnek)**Invited lecture:***Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*, Fakultät für Mathematik und Naturwissenschaften, Technische Universität Ilmenau, Germany, April 8, 2011**Invited lecture:***Über die Rolle der Qualifikationsbedingungen bei der Herleitung von dualen Darstellungen für konvexe Risikomaße*, Kolloquium des Instituts für Operations Research, Karlsruhe Institut of Technology, Karlsruhe, Germany, January 20, 2011*On a Zero Duality Gap Result in Extended Monotropic Programming*, International Conference on Advances in Optimization and Related Topics, Centre de Recerca Matemàtica, Barcelona, Spain, November 29 - December 3, 2010 (co-author: E.R. Csetnek)**Invited lecture:***Konjugierte Dualität in der konvexen Optimierung. Theoretische Aspekte und Anwendungen im maschinellen Lernen*, Technische Universität Hamburg-Harburg, Germany, October 25, 2010**Invited lecture:***Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*, Fakultät für Mathematik, Otto-von-Guericke-Universität Magdeburg, Germany, October 11, 2010**Invited lecture:***Conjugate Duality in Convex Optimization and Beyond*, 7th International Conference on Applied Mathematics, Minisymposium Optimization Theory, Operations Research and Applications, Baia Mare, Romania, September 1-4, 2010*On a Zero Duality Gap Result in Extended Monotropic Programming*, 24th European Conference on Operational Research, Lisbon, Portugal, July 11-14, 2010 (co-author: E.R. Csetnek)*On the Weak* Closedness of the Sum of the Images of Enlargements of Two Maximal Monotone Operators*, 8th EUROPT Workshop on Advances in Continuous Optimization, Aveiro, Portugal, July 9-10, 2010 (co-author: E.R. Csetnek)**Invited lecture:***Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*, Fakultät für Mathematik, Universität Dortmund, Germany, July 5, 2010**Invited lecture:***Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*, Fakultät für Mathematik, Informatik und Naturwissenschaften, Universität Hamburg, Germany, July 2, 2010*On a Zero Duality Gap Result in Extended Monotropic Programming*, 4th Workshop on Optimization and Variational Analysis, Elche, Spain, June 14-16, 2010 (co-author: E.R. Csetnek)**Invited lecture:***Conjugate Duality in Convex Optimization and Beyond*, Institute of Science and Technology Austria, Klosterneuburg, Austria, June 11, 2010**Invited lecture:***Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*, Abteilung Mathematik des Fachbereichs IV, Universität Trier, Germany, June 8, 2010**Invited lecture:***On Some Quasi-Relative Interior-Type Qualification Conditions in Convex Programming*, Oberseminar Optimierung, Institut für Mathematik, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany, April 27, 2010**Invited lecture:***Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*, Forschungsseminar Partielle Differentialgleichungen und Inverse Probleme, Fakultät für Mathematik, Technische Universität Chemnitz, Chemnitz, Germany, December 4, 2009**Invited lecture:***Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*, Fakultät für Mathematik und Wirtschaftswissenschaften, Universität Ulm, Germany, November 25, 2009**Invited lecture:***On Fenchel Duality and some of Its Variants*, 09w5006 Interdisciplinary Workshop on Fixed-Point Algorithms for Inverse Problems in Science and Engineering, Banff International Research Station for Mathematical Innovation and Discovery, Banff, Canada, November 1-6, 2009**Invited lecture:***An Application of the Bivariate Inf-Convolution Formula to Enlargements of Monotone Operators*, OCANA Seminar Series, UBC Okanagan, Kelowna, Canada, October 29, 2009 (co-author: E.R. Csetnek)**Invited lecture:***Minimality via Convex Subdifferential Calculus: the Role of the Regularity Conditions*, Chemnitz-RICAM-Symposium on Inverse Problems, Linz, Austria, July 14-15, 2009*On Two Variants of Fenchel Duality: Stable and Totally Unstable Duality*, 23rd European Conference on Operational Research, Bonn, Germany, July 5-8, 2009 (co-author: E.R. Csetnek)*Regularity Conditions via Quasi-Relative Interior for Fenchel and Lagrange Duality in Convex Programming*, 7th EUROPT Workshop on Advances in Continuous Optimization, Remagen, Germany, July 3-4, 2009 (co-authors: E.R. Csetnek und A. Moldovan)**Invited lecture:***Recent Achievements and Challenges Regarding Conjugate Duality in Convex Optimization*, Faculty of Mathematics and Computer Sciences of the "Babeş - Bolyai" University Cluj-Napoca, Cluj-Napoca, Romania, June 25, 2009*On Totally Fenchel Unstable Functions*, The Sixth International Conference on Nonlinear Analysis and Convex Analysis, Tokyo, Japan, March 27-31, 2009 (co-authors: E.R. Csetnek and A. Löhne)**Invited lecture:***Konjugierte Dualität in der konvexen Optimierung*, Naturwissenschaftliche Fakultät, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, January 8, 2009**Invited lecture:***Conjugate Duality in Convex Optimization. Theoretical Aspects and some Applications in Machine Learning*, Dipartimento di Informatica e Scienze dell'Informazione, University of Genova, Genova, Italy, September 23, 2008 (co-authors: A. Heinrich and N. Lorenz)*The Quasi-Relative Interior in Convex Programming: Regularity Conditions and Duality Theorems*, Fifth World Congress of Nonlinear Analysts, Orlando, USA, July 2-9, 2008 (co-authors: E.R. Csetnek and A. Moldovan)*On Two Open Problems Regarding Totally Fenchel Unstable Functions*, International School of Mathematics "Guido Stampacchia", 48th Workshop: Nonsmooth Analysis Optimization and Applications, Erice, Italy, May 9-17, 2008 (co-authors: E.R. Csetnek and A. Löhne)**Invited lecture:***On Two Open Problems Regarding Totally Fenchel Unstable Functions*, Dipartimento di Matematica Applicata U.Dini, University of Pisa, Pisa, Italy, January 24, 2008 (co-authors: E.R. Csetnek, A. Löhne and S. Simons)**Invited lecture:***A New Condition for Maximal Monotonicity via Representative Functions*, International Conference on Continuous Optimization - Modelling and Optimization: Theory and Applications 2007 - ICCOPT 07-MOPTA 07, McMaster University, Hamilton, Canada, August 13-16, 2007 (co-authors: E.R. Csetnek and G. Wanka)**Invited plenary lecture:***Closedness Type Regularity Conditions in Convex Optimization*, 6th Congress of Romanian Mathematicians, Bucharest, Romania, June 28 - July 4, 2007*Regularity Conditions Via Quasi-Relative Interior in Convex Progamming*, The Fifth International Conference on Nonlinear Analysis and Convex Analysis, Hsinchu, Taiwan, May 31 - June 4, 2007 (co-authors: E.R. Csetnek and G. Wanka)*Sequential Optimality Conditions in Convex Programming Via Perturbation Approach*, CODE 2007: Conférence de la SMAI sur l'Optimisation et la Décision, Institut "Henri Poincaré", Paris, France, April 18-20, 2007 (co-authors: E.R. Csetnek and G. Wanka)**Invited lecture:***A New Regularity Condition for Subdifferential Calculus and Fenchel Duality in Infinite Dimensional Spaces. Applications for Maximal Monotone Operators*, Seminario Mario Volpato, Department of Applied Mathematics, University Ca' Foscari Venezia, Venice, Italy, September 28, 2006 (co-author: G. Wanka)**Invited lecture:***A New Regularity Condition for Subdifferential Calculus and Fenchel Duality in Infinite Dimensional Spaces*, Dipartimento di Matematica, University of Pisa, Pisa, Italy, September 22, 2006 (co-author: G. Wanka)*Brézis-Haraux-Type Approximation of the Range of a Monotone Operator Composed with a Linear Mapping*, International Conference on Applied Analysis and Differential Equations, Iaşi, Romania, September 4-9, 2006 (co-authors: S.M. Grad and G. Wanka)*Brézis-Haraux-Type Approximation of the Range of a Monotone Operator Composed with a Linear Mapping*, INTAS Summer School - Nonlinear Analysis with Applications in Economics, Energy and Transportation, Bergamo, Italy, June 5-9, 2006 (co-authors: S.M. Grad and G. Wanka)*Maximal Monotonicity for the Precomposition with a Linear Operator*, International Conference on Mathematics of Optimization and Decision Making, Point-a-Pitre, Guadeloupe, April 18-21, 2006 (co-authors: S.M. Grad and G. Wanka)*A Weak Regularity Condition for Subdifferential Calculus and Fenchel Duality in Infinite Dimensional Spaces*, International Conference in Memoriam Gyula Farkas, Cluj-Napoca, Romania, August 23-26, 2005 (co-author: G. Wanka)*A New Constraint Qualification for the Formula of the Conjugate of Composed Functions in Infinite Dimensional Spaces*, 8th International Symposium on Generalized Convexity and Generalized Monotonicity, Varese, Italy, July 4-8, 2005 (co-authors: S.M. Grad and G. Wanka)**Invited lecture:***On a New Closed Cone Constraint Qualification*, Research Seminar of the Department of Analysis and Optmization, Faculty of Mathematics and Computer Sciences of the "Babeş - Bolyai" University Cluj-Napoca, Cluj-Napoca, Romania, November 4, 2004 (co-author: G. Wanka)*Fenchel-Lagrange versus Geometric Duality in Convex Optimization*, 12th French-German-Spanish Conference on Optimization, Avignon, France, September 20-24, 2004 (co-authors: S.M. Grad and G. Wanka)*An Analysis of Dual Problems in Multiobjective Optimization (II)*, IV Brasilian Workshop on Continuous Optimization, Rio de Janeiro, Brazil, July 15-20, 2002 (co-author: G. Wanka)**Invited lecture:***Duality for Multiobjective Convex Semidefinite Programming Problems*, Kollegseminar im Graduiertenkolleg GKAAM, München, Germany, May 13, 2002 (co-authors: S.M. Grad and G. Wanka)*Duality for the Location Model Involving Sets as Existing Facilities*, The 12-th Workshop of the GOR-Working Group "Decision Theory and Practice", Hohenheim, Germany, March 21-23, 2002 (co-author: G. Wanka)*An Application of the Theory of Duality for Support Vector Machines*, The Annual Meeting of the Fellowship Holders of "Gottlieb Daimler- und Karl Benz-Stiftung", Willebadessen, Germany, September 14-16, 2001*A New Duality Approach for Convex Optimization Problems*, Optimization 2001, Aveiro, Portugal, July 23-25, 2001 (co-author: G. Wanka)*A New Duality Approach for Multiobjective Convex Optimization Problems*, The Workshop of the Ph. D. students in optimization from Saxony, Freiberg, Germany, July 17, 2001 (co-author: G. Wanka)*Multiobjective Duality for Convex Ratios*, The 10-th Workshop of the GOR-Working Group "Decision Theory and Practice", Seeheim, Germany, March 16-18, 2000 (co-author: G. Wanka)

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