# Conferences and Talks

### [since 1999]

## 2018

**S. Bitterlich, R.I. Boţ, E.R. Csetnek, G. Wanka** - *Proximal Alternating Minimization Algorithm (PAMA)*,
Winter School Modern Methods in Nonsmooth Optimization Würzburg, Germany, 26.02-02.03.2018 (Poster: S. Bitterlich)

## 2017

**S. Bitterlich, R.I. Boţ** - *Proximal-AMA and application in image deblurring and denoising*, Third Central European Set-Valued and Variational Analysis Meeting,
Chemnitz, Germany, 25.11.2017 (Lecturer: S. Bitterlich)

**S.-M. Grad, O. Wilfer** - *Proximal methods for solving nonlinear minimax location problems with perturbed minimal time functions via conjugate duality*,
Third Central European Set-Valued and Variational Analysis Meeting, Chemnitz, Germany, 25.11.2017 (Lecturer: O. Wilfer)

**S.-M. Grad** - *A forward-backward method for solving vector optimization problems*, 18th French - German - Italian Conference on Optimization,
Paderborn, Germany, 25-28.09.2017 (Lecturer: S.-M. Grad)

**S.-M. Grad** - *An inertial forward-backward method for solving vector optimization problems*, CMO-BIRS Workshop Splitting Algorithms,
Modern Operator Theory, and Applications, Oaxaca, Mexico, 17-22.09.2017 (Lecturer: S.-M. Grad)

**S.-M. Grad** - *A forward-backward method for solving vector optimization problems*, International
Conference on Operations Research - OR2017, Berlin, Germany, 05-08.09.2017
(Lecturer: S.-M. Grad)

**G. Wanka, O. Wilfer** - *Solving minimax location problems via epigraphical projection II*,
International Symposium on Locational Decisions - ISOLDE XIV, Toronto/Hunstville, Canada, 10-14.07.2017
(Lecturer: O. Wilfer)

**G. Wanka, O. Wilfer** - *Solving minimax location problems via epigraphical projection I*,
International Symposium on Locational Decisions - ISOLDE XIV, Toronto/Hunstville, Canada, 10-14.07.2017
(Lecturer: G. Wanka)

**G. Wanka, O. Wilfer** - *Solving minimax location problems via epigraphical projection*,
DACH Mini Workshop "Advances in Nonsmooth Optimization", University of Vienna, Austria,
29.06.2017 (Lecturer: G. Wanka)

**S. Bitterlich** - *Smoothing algorithms for convex optimization problems*,
DACH Mini Workshop "Advances in Nonsmooth Optimization", University of Vienna, Austria,
29.06.2017 (Lecturer: S. Bitterlich)

**G. Wanka** - *From scalar to vector duality - directions of development and perspectives*,
Minisymposium Vector Optimization, Erlangen, Germany, 23.06.2017
(Lecturer: G. Wanka)

## 2016

**S.-M. Grad** - *Characterizations of minimality notions by means of quasi interior*,
Second Central European Set-Valued and Variational Analysis Meeting, Jena, Germany, 03.12.2016
(Lecturer: S.-M. Grad)

**S.-M. Grad** - *An inertial proximal point method for vector optimization problems*,
Seminar Optimierung, Facultät für Mathematik, University of Vienna, Austria,
01.12.2016 (Lecturer: S.-M. Grad)

**S.-M. Grad** - *An inertial proximal point method for vector optimization problems*,
OR 2016 Konferenz, Hamburg, Germany, 30.08-02.09.2016
(Lecturer: S.-M. Grad)

**S.-M. Grad** - *Closedness type regularity conditions in convex optimization and beyond*, Sixth International Conference in Optimization Theory and its Applications - ALEL 2016, Cartagena, Spain, 06-08.06.2016
(Lecturer: S.-M. Grad)

**S.-M. Grad** - *About closedness type regularity conditions in convex optimization*, International Conference on Bilevel Optimization and Related Topics in honor of Stephan Dempe's 60th birthday - ICBO16, Dresden, Germany, 04-06.05.2016
(Lecturer: S.-M. Grad)

## 2015

**S.-M. Grad** - *An inertial proximal point method for vector optimization problems*,
Central European Set-Valued and Variational Analysis Meeting, Göttingen, Germany, 24.10.2015
(Lecturer: S.-M. Grad)

**S.-M. Grad** - *An iterative method for solving vector optimization problems*,
EURO-XXVII Konference, Glasgow, United Kingdom, 12.-15.07.2015
(Lecturer: S.-M. Grad)

**S.-M. Grad** - *About closedness type regularity conditions in convex optimization*,
13th EUROPT Workshop - Advances in Continuous Optimization, Edinburgh, United Kingdom, 08.-10.07.2015
(Lecturer: S.-M. Grad)

**O. Wilfer** -
*Duality results for extended multifacility minimax location problems*,
Seminar Optimization, University of Vienna, Austria, 26.03.2015
(Lecturer: O. Wilfer)

**O. Wilfer** -
*Duality statements for extended minimax location problems*,
Workshop Optimization, Ehrenfriedersdorf, Germany, 26-27.02.2015
(Lecturer: O. Wilfer)

## 2014

**S.-M. Grad, G. Wanka** - *On biconjugates of infimal functions*,
International conference on Operations Research - OR2014, Aachen, Germany
02-05.09.2014
(Lecturer: S.-M. Grad)

**G. Wanka, O. Wilfer** -
*Duality for multi-composed convex programming problems*,
International Congress of Mathematicians, Seoul, Korea, 13-21.08.2014
(Lecturer: G. Wanka)

**S.-M. Grad, E.L. Pop** - *Generalizations of the weak minimality*,
The fourth Latin American Workshop on Optimization and Control - LAWOC 2014, Lima, Peru,
15-18.07.2014
(Lecturer: S.-M. Grad)

**G. Wanka, O. Wilfer** -
*Duality for convex continuous location problems via multi-composed optimization II*,
11th International Symposium on Locational Decisions - ISOLDE XII, Naples/Capri, Italy,
16-20.06.2014
(Lecturer: O. Wilfer)

**G. Wanka, O. Wilfer** -
*Duality for convex continuous location problems via multi-composed optimization I*,
11th International Symposium on Locational Decisions - ISOLDE XII, Naples/Capri, Italy,
16-20.06.2014
(Lecturer: G. Wanka)

**R.I. Boţ, S.-M. Grad, G. Wanka** - *Multiobjective duality for classical linear vector optimization problems revisited*
Leipzig University of Applied Sciences, Germany, 18.03.2014
(Lecturer: S.-M. Grad)

## 2013

**S.-M. Grad, E.L. Pop** - *Vector duality for convex vector optimization problems by means of the quasi interior of the ordering cone*, International Conference on Operations Research - OR2013, Rotterdam, Netherlands, 03-06.09.2013
(Lecturer: S.-M. Grad)

**R.I. Boţ, C. Hendrich** - *A Douglas-Rachford type primal-dual method for solving inclusions with mixtures of composite and parallel-sum type monotone operators*,
European Conference on Computational Optimization - EUCCO 2013, Chemnitz, Germany, 17-19.07.2013
(Lecturer: C. Hendrich)

**R.I. Boţ S.-M. Grad** - *Approaching the Maximal Monotonicity of Bifunctions via Representative Functions*,
South Pacific Optimization Meeting - SPOM2013, Newcastle, Australia, 09-12.02.2013
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *Convex Analysis in Imaging*, Optimization of Planet Earth Afternoon, Mathematics of Planet Earth 2013, Newcastle, Australia, 09-12.02.2013
(Lecturer: R.I. Boţ)

## 2012

**R.I. Boţ** - *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, 19-24.11.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *Monotone Operatoren aus dem Blickwinkel der konvexen Optimierung*, Paris-Ladron University of Salzburg, Austria, 06.11.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *Eingeladener Vortrag: Auf Fenchel-Dualität basierende Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben mit Anwendungen in der Bildverarbeitung*, Johannes Kepler University Linz, Austria, 22.10.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ, S.-M. Grad** - *Approaching the maximal monotonicity of bifunctions via representative functions*,
The 21st International Symposium on Mathematical Programming - ISMP2012, Berlin, Germany, 19-24.08.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ, S.-M. Grad, G. Wanka** - *Classical linear vector optimization duality revisited*, The 21st International Symposium on Mathematical Programming - ISMP2012, Berlin, Germany, 19-24.08.2012
(Lecturer: S.-M. Grad)

**R.I. Boţ, A. Heinrich, G. Wanka** - *The support vector machines approach via Fenchel-type duality*,
The 21st International Symposium on Mathematical Programming - ISMP2012, Berlin, Germany, 19-24.08.2012
(Lecturer: A. Heinrich)

**R.I. Boţ, E.R. Csetnek** - *Conjugate duality and the control of linear discrete systems*,
The 21st International Symposium on Mathematical Programming - ISMP2012, Berlin, Germany, 19-24.08.2012
(Lecturer: E.R. Csetnek)

**R.I. Boţ, C. Hendrich** - *A double smoothing technique for solving nondifferentiable convex optimization problems*,
The 21st International Symposium on Mathematical Programming - ISMP2012, Berlin, Germany, 19-24.08.2012
(Lecturer: C. Hendrich)

**R.I. Boţ, S.-M. Grad, G. Wanka** - *Revisiting the classical linear vector optimization duality*, The IX Brazilian Workshop on Continuous Optimization, Luis Correia - Piaui, Brasil, 29.07-04.08.2012
(Lecturer: S.-M. Grad)

**R.I. Boţ**: *Auf Fenchel-Dualität basierende doppelte Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben mit Anwendungen in der Bildverarbeitung*, Research Seminar Algorithmic and Discrete Mathematics, Deaprtment of Mathematics, Chemnitz University of Technology, Chemnitz, Germany, 27.06.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ, S.-M. Grad, G. Wanka** - *Classical linear vector optimization duality revisited*, Constructive Nonsmooth Analysis and Related Topics, St. Petersburg, Russia, 18-23.06.2012
(Lecturer: S.-M. Grad)

**R.I. Boţ, S.-M. Grad** - *Approaching the maximal monotonicity of bifunctions via representative functions*, Constructive Nonsmooth Analysis and Related Topics, St. Petersburg, Russia, 18-23.06.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - Invited lectures series: *Convex analysis with applications in inverse problems*, Institut für Numerische und Angewandte Mathematik,
Georg-August-University Göttingen, Germany, 11-14.06.2102
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *Auf Fenchel-Dualität basierende doppelte Regularisierungstechniken zur Lösung nichtdifferenzierbarer konvexer Optimierungsaufgaben mit Anwendungen in der Bildverarbeitung*, University of Cologne, Germany, 07.05.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *Techniken der doppelten Regularisierung zur Lösung konvexer Optimierungsaufgaben mit Anwendung in der Bildverarbeitung*, University Koblenz-Landau, Germany, 22.03.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *Über die Implementierung von doppelten Regularisierungstechniken zur Lösung
nichtdifferenzierbarer konvexer Optimierungsaufgaben*, University Bremen, Germany, 31.01.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *Über die Implementierung von doppelten Regularisierungstechniken zur Lösung
nichtdifferenzierbarer konvexer Optimierungsaufgaben*, Ernst-Moritz-Arndt-University Greifswald,
Germany, 27.01.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *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, 24.01.2012
(Lecturer: R.I. Boţ)

**G. Wanka** - *Dualität und Konjugation-Eckpfeiler der Konvexen Analysis*,
Runge-Herglotz-Seminar of Applied Analysis, Institute of Mathematics, Georg-August Universität Göttingen,
Germany, 23.01.2012
(Lecturer: G. Wanka)

**R.I. Boţ** - *A Double Smoothing Technique for Solving Convex Optimization Problems with
Applications to Image Processing*, Leopold-Franzens-Universität, Innsbruck, Austria, 12.01.2012
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *A Fenchel Duality-Based Approach for Solving Optimization Problems Arising in Supervised
Learning*, Konrad-Zuse-Zentrum für Informationstechnik, Berlin, Germany, 05.01.2012
(Lecturer: R.I. Boţ)

## 2011

**R.I. Boţ** - *Monotone Operatoren aus dem Blickwinkel der konvexen Optimierung*,
Fakultät für Mathematik, Informatik und Naturwissenschaften, RWTH Aachen, Germany, 12th December 2011
(Lecturer: R.I. Boţ)

**G. Wanka** - *Duality for set-valued vector optimization*,
International Conference on Optimization, Theory, Algorithms and Applications in Economics, Centre de Recerca
Matematica, Barcelona, Spain, 24th-28th October, 2011
(Lecturer: G. Wanka)

**R.I. Boţ, S.-M. Grad, G. Wanka** - *Classical linear vector duality revisited*,
International Conference on Optimization, Theory, Algorithms and Applications in Economics, Centre de Recerca
Matematica, Barcelona, Spain, 24th-28th October, 2011
(Lecturer: S.-M. Grad)

**R.I. Boţ, S.-M. Grad** - *Approaching the maximal monotonicity of bifunctions via representative functions*,
International Conference on Optimization, Theory, Algorithms and Applications in Economics, Centre de Recerca
Matematica, Barcelona, Spain, 24th-28th October, 2011
(Lecturer: R.I. Boţ)

**R.I. Boţ** - *A Fenchel duality-based approach for solving optimization problems arising in supervised
learning*,
Applied Mathematics Seminar, University of New South Wales, Sydney, Australia, 22nd September, 2011
(Lecturer: R.I. Boţ)

**R.I. Boţ, S.-M. Grad, G. Wanka** - *Classical linear vector duality revisited*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: S.-M. Grad)

**R.I. Boţ, E.R. Csetnek** - *On a zero duality gap result in extended monotropic programming*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: E.R. Csetnek)

**R.I. Boţ, A. Heinrich, G. Wanka** - *Employing different loss functions for the classification of images via supervised learning*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: A. Heinrich)

**R.I. Boţ, E.R. Csetnek** - *Eror bounds results for convex inequality systems via conjugate duality*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: R.I. Boţ)

**G. Wanka** - *Duality for set-valued vector optimization*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: G. Wanka)

**G. Wanka** - *Conjugate duality in multiobjective optimization*,
IV International conference "Mathematics, Its Applications and Mathematical Education" (MAME'11)
Ulan-Ude, Baikal, Russia, 27th June-1st July, 2011
(Lecturer: G. Wanka)

**R. I. Boţ** - *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, Deutschland, 20th January, 2011
(Lecturer: R. I. Boţ)

## 2010

**R. I. Boţ, E. R. Csetnek** - *On a zero duality gap result in extended monotropic
programming*,
International Conference on Advances in Optimization and Related Topics, Centre de Recerca Matematica, Barcelona,
Spain, 29th November - 3rd December, 2010 (Lecturer: R. I. Boţ)

**R. I. Boţ** - *Conjugate duality in convex optimization and beyond*,
7th International Conference on Applied Mathematics - ICAM7, Baia Mare, Romania, 1st-4th September, 2010
(Lecturer: R. I. Boţ)

**G. Wanka** - *Duality for linear multiobjective optimization - classical versus new results*,
The International Conference on Optimization, Simulation and Control - COSC 2010,
Ulaanbaatar, Mongolia, 25th-28th July, 2010 (Lecturer: G. Wanka)

**G. Wanka** - *Conjugate duality in multiobjective optimization*,
24th European Conference on Operational Research - EURO-XXIV, Lisbon, Portugal, 11th-14th July, 2010 (Lecturer: G. Wanka)

**R. I. Boţ, S.-M. Grad** - *Duality for vector optimization problems via a general
scalarization*, 24th European Conference on Operational Research - EURO-XXIV, Lisbon, Portugal, 11th-14th July, 2010 (Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek** - *On a zero duality gap result in extended monotropic
programming*, 24th European Conference on Operational Research - EURO-XXIV, Lisbon, Portugal, 11th-14th July, 2010 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad** - *Closedness type regularity conditions for surjectivity results involving the sum of two maximal monotone operators*, 8th EUROPT Workshop - Advances in Continuous Optimization, Aveiro, Portugal, 09th-10th July, 2010
(Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek** - *On the weak* closedness of the sum of
the images of enlargements of two maximal
monotone operators*, 8th EUROPT Workshop - Advances in Continuous Optimization, Aveiro, Portugal, 09th-10th July, 2010
(Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Classical linear vector optimization duality
revisited*, 8th EUROPT Workshop - Advances in Continuous Optimization, Aveiro, Portugal, 09th-10th July, 2010
(Lecturer: G. Wanka)

**R. I. Boţ, N. Lorenz, G. Wanka** -
*Optimality conditions for portfolio optimization problems*, 24th Mini EURO Conference on Continuous Optimization and Information-Based Technologies in The Financial Sector
- 24th MEC EurOPT 2010, Izmir, Turkey, 23th-26th June, 2010
(Lecturer: N. Lorenz)

**R. I. Boţ, S.-M. Grad** - *Lower semicontinuous type regularity conditions for subdifferential calculus
*, 24th Mini EURO Conference on Continuous Optimization and Information-Based Technologies in The Financial Sector - 24th MEC EurOPT 2010, Izmir, Turkey, 23th-26th June, 2010
(Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek** -
*On a zero duality gap result in extended monotropic programming*,
4th Workshop on Optimization and Variational Analysis, Elche, Spain, 14th-16th June, 2010
(Poster: R. I. Boţ)

**R. I. Boţ** - *On some quasi-relative interior-type qualification conditions in convex programming*,
High Seminar Optimization, Institute of Mathematics, Martin-Luther University Halle-Wittenberg, Germany,
27th April, 2010
(Lecturer: R. I. Boţ)

## until 2009

**R. I. Boţ** - *Konjugierte Dualität bei konvexen Optimierungsaufgaben und darüber hinaus*,
Research Seminar Partial Differential Equations and Inverse Problems,
Faculty of Mathematics, Chemnitz University of Technology, 4th December, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ** - *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, 1st-6th November, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ, E. R. Csetnek** - *An application of the bivariate inf-convolution formula to enlargements
of monotone operators*, OCANA Seminar Series, UBC Okanagan, Kelowna, Canada, 29th October, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ** - *Minimality via convex subdifferential calculus: the role of the regularity
conditions*, Chemnitz-RICAM-Symposium on Inverse Problems, Linz, Austria, 14th-15th July, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *A general approach
for studying duality in multiobjective optimization*,
23rd European Conference on Operational Research - EUROXXIII, Bonn, Germany, 5th-8th July, 2009
(Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek, A. Löhne** - *On two variants of Fenchel duality: stable and totally
unstable duality*,
23rd European Conference on Operational Research - EUROXXIII, Bonn, Germany, 5th-8th July, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad** - *Regularity conditions for formulae of biconjugate functions*,
7th EUROPT Workshop - Advances in Continuous Optimization, Remagen, Germany, 3rd-4th July, 2009
(Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek, A. Moldovan** - *Regularity conditions via quasi-relative interior
for Fenchel and Lagrange duality in convex programming*,
7th EUROPT Workshop - Advances in Continuous Optimization, Remagen, Germany, 3rd-4th July, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ** - *Recent achievements and challenges regarding
conjugate duality in convex optimization*, Faculty of Mathematics and Computer Science, "Babeş - Bolyai"
University Cluj-Napoca, Cluj-Napoca, Romania, 25th June, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Generalized Moreau-Rockafellar results for composed
convex functions*, The Sixth International Conference on Nonlinear Analysis and Convex Analysis - NACA2009, Tokyo, Japan, 27th-31st March, 2009
(Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek, A. Löhne** -
*On totally Fenchel unstable functions*,
The Sixth International Conference on Nonlinear Analysis and Convex Analysis - NACA2009, Tokyo, Japan, 27th-31st March, 2009
(Lecturer: R. I. Boţ)

**R. I. Boţ, A. Heinrich, N. Lorenz** -
*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, 23th September, 2008 (Lecturer: R. I. Boţ)

**R. I. Boţ, E. R. Csetnek** -
*The quasi-relative interior in convex programming: regularity conditions and duality theorems*,
Fifth World Congress of Nonlinear Analysts - WCNA 2008, Orlando, USA, 2nd-9th July, 2008 (Lecturer: R. I. Boţ)

**G. Wanka** -
*Conjugate duality in vector optimization*,
Fifth World Congress of Nonlinear Analysts - WCNA 2008, Orlando, USA, 2nd-9th July, 2008
(Lecturer: G. Wanka)

**G. Wanka** -
*Duality for multiobjective location problems*,
11th International Symposium on Locational Decisions - ISOLDE XI, Santa Barbara, USA,
26th June - 1st July, 2008
(Lecturer: G. Wanka)

**R. I. Boţ, E. R. Csetnek** -
*An application of the bivariate inf-convolution to enlargements of monotone operators*,
International School of Mathematics "Guido Stampacchia",
48th Workshop: Nonsmooth Analysis Optimization and Applications, Erice, Italy,
9th-17th May, 2008 (Lecturer: E. R. Csetnek)

**R. I. Boţ, E. R. Csetnek, A. Löhne** -
*On two open problems regarding totally Fenchel unstable functions*,
International School of Mathematics "Guido Stampacchia",
48th Workshop: Nonsmooth Analysis Optimization and Applications, Erice, Italy,
9th-17th May, 2008 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Generalized Moreau-Rockafellar results for composed
convex functions*, International School of Mathematics "Guido Stampacchia",
48th Workshop: Nonsmooth Analysis Optimization and Applications, Erice, Italy,
9th-17th May, 2008 (Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek, A. Löhne, S. Simons** -
*On two open problems regarding totally Fenchel unstable functions*,
Dipartimento di Matematica Applicata "U.Dini", University of Pisa, Pisa, Italy, 24th January, 2008
(Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Closedness type and subdifferential regularity
conditions for conjugate duality in infinite dimensional spaces*,
Dipartimento di Matematica Applicata "U.Dini", University of Pisa, Pisa, Italy, 24th January, 2008
(Lecturer: G. Wanka)

**R. I. Boţ, N. Lorenz, G. Wanka** - *Chance-constrained optimization
problems and applications*, Workshop "Stochastische Analysis" 2007, Eibenstock, Germany, 4th-
6th October, 2007 (Lecturer: N. Lorenz)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Regularity conditions for Fenchel-Lagrange duality in infinite
dimensional spaces*, International Conference on Continuous Optimization - Modelling and
Optimization: Theory and Applications 2007 - ICCOPT 07-MOPTA 07,
McMaster University, Hamilton, Ontario, Canada, 13th-16th August, 2007 (Lecturer: G. Wanka)

**R. I. Boţ, E. R. Csetnek, G. Wanka** - *
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, Ontario, Canada, 13th-16th August, 2007 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *New regularity conditions for Lagrange and Fenchel-Lagrange
duality in infinite dimensional spaces*, The Second International Conference on Optimization and Optimal
Control - COOC 2007, Ulaanbaatar, Mongolia, 17th-20th July, 2007 (Lecturer: G. Wanka)

**R. I. Boţ** - *Closedness type regularity conditions in convex optimization*,
6th Congress of Romanian Mathematicians, Bucharest, Romania, 28th June-4th July, 2007
(Lecturer: R. I. Boţ)

**R. I. Boţ, E. R. Csetnek, G. Wanka** - *Regularity conditions via quasi-relative interior in convex programming*,
NACA 2007: The Fifth International Conference on
Nonlinear Analysis and Convex Analysis, National Tsing-Hua
University, Hsinchu, Taiwan, 31st May-4th June, 2007
(Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Fenchel-Lagrange duality in infinite dimensional spaces*,
NACA 2007: The Fifth International Conference on
Nonlinear Analysis and Convex Analysis, National Tsing-Hua
University, Hsinchu, Taiwan, 31st May-4th June, 2007
(Lecturer: G. Wanka)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *On strong and total Lagrange duality for convex optimization problems*,
NACA 2007: The Fifth International Conference on
Nonlinear Analysis and Convex Analysis, National Tsing-Hua
University, Hsinchu, Taiwan, 31st May-4th June, 2007
(Lecturer: S.-M. Grad)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *A new framework for studying duality in multiobjective optimization*, CODE 2007:
Conference de la SMAI sur l'Optimisation et la Decision, Institut "Henri Poincare", Paris, France, 18th-20th April, 2007 (Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek, G. Wanka** - *Sequential optimality conditions in convex programming via perturbation approach*,
CODE 2007: Conference de la SMAI sur l'Optimisation et la Decision, Institut "Henri Poincare", Paris, France, 18th-20th April, 2007
(Lecturer: R. I. Boţ)

**R. I. Boţ, G. Wanka, I. B. Hodrea** - *Farkas-Type Results with Conjugate Functions*, Seminario Mario Volpato,
Department of Applied Mathematics, University Ca' Foscari Venezia, Venice, Italy, 28th September, 2006 (Lecturer: G. Wanka)

**R. I. Boţ, G. Wanka, S.-M. Grad** - *
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,
28th September, 2006 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
A New Framework for Studying Duality in Multiobjective Optimization*,
GREQAM Summer School Rationality, Social Learning and Complexity, Aix-en Provence, France, 25th-29th September, 2006 (Lecturer: S.-M. Grad)

**R. I. Boţ, E. R. Csetnek, G. Wanka** - *
A New Condition for Maximal Monotonicity via Representative Functions*,
GREQAM Summer School Rationality, Social Learning and Complexity, Aix-en Provence, France, 25th-29th September, 2006 (Lecturer: E. R. Csetnek)

**R. I. Boţ, G. Wanka, S.-M. Grad** - *
A New Regularity Condition for Subdifferential Calculus and Fenchel Duality in Infinite Dimensional Spaces*,
Department of Mathematics, University of Pisa, Pisa, Italy, 22nd September, 2006 (Lecturer: R. I. Boţ)

**G. Wanka, R. I. Boţ, S.-M. Grad** - *
Almost and Nearly Convex Functions: Conjugacy and Duality*, Department of Mathematics,
University of Pisa, Pisa, Italy, 22nd September, 2006 (Lecturer: G. Wanka)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
Conjugacy and Fenchel Duality for Almost Convex and Nearly Convex Functions*,
International Conference on Applied Analysis and Differential Equations, Iaşi, Romania, 4th-9th September, 2006
(Lecturer: S.-M. Grad)

**R. I. Boţ, I. B. Hodrea, G. Wanka** - *
Farkas-Type Results for Fractional Programming Problems*,
International Conference on Applied Analysis and Differential Equations, Iaşi, Romania, 4th-9th September, 2006
(Poster: I. B. Hodrea)

**R. I. Boţ, E. R. Csetnek, G. Wanka** - *
Some New Regularity Conditions for Fenchel Duality in Real Linear Spaces*,
International Conference on Applied Analysis and Differential Equations, Iaşi, Romania, 4th-9th September, 2006
(Poster: E. R. Csetnek)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
Brezis-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, 4th-9th September, 2006 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
Brezis-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, 5th-9th June, 2006 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
Maximal monotonicity for the precomposition with a linear operator*,
International Conference on Mathematics of Optimization and
Decision Making, University Antilles-Guyane, Guadeloupe, France,
18th-21st April, 2006 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
New regularity conditions for Lagrange and
Fenchel-Lagrange duality in infinite dimensional spaces*,
International Conference on Mathematics of Optimization and
Decision Making, University Antilles-Guyane, Guadeloupe, France,
18th-21st April, 2006 (Lecturer: S.-M. Grad)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
Almost and nearly convex functions: conjugacy and duality*,
8th International Conference on Approximation and Optimization in The Caribbean,
Santo Domingo, Dominican Republic, 3rd-7th April, 2006 (Lecturer: G. Wanka)

**R. I. Boţ, G. Wanka** - *
Farkas-type results for max-functions*,
7th International Conference on Operations Research, Havana,
Cuba, 27th-31st March, 2006 (Lecturer: G. Wanka)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *
Weaker constraint qualifications in maximal monotonicity*,
Workshop of the PhD Students in Optimization from Saxony,
Freiberg, Germany, 30th November, 2005 (Lecturer: S.-M. Grad)

**R. I. Boţ, I. B. Hodrea, G. Wanka** - *Farkas-type
results for composed convex functions*, Workshop of the PhD
Students in Optimization from Saxony,
Freiberg, Germany, 30th November, 2005 (Lecturer: I. B. Hodrea)

**R. I. Boţ, A. Lkhamsuren, G. Wanka** - *On gap functions for
equilibrium problems*, Workshop of the PhD Students in Optimization from Saxony,
Freiberg, Germany, 30th November, 2005 (Lecturer: A. Lkhamsuren)

**R. I. Boţ, G. Wanka** - *Farkas-type Results with Conjugate Functions*,
International Conference in Memoriam Gyula Farkas, Cluj-Napoca, Romania,
23rd-26th August, 2005 (Lecturer: G. Wanka)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Conjugate Duality for Composed
Convex Optimization
Problems with a New Constraint Qualification*, International Conference in Memoriam
Gyula Farkas, Cluj-Napoca, Romania, 23rd-26th August, 2005 (Lecturer: S.-M. Grad)

**R. I. Boţ, 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, 23rd-26th August, 2005
(Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, 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, 4th-8th July, 2005 (Lecturer: R. I. Boţ)

**R. I. Boţ, G. Kassay, G. Wanka** - *Strong Duality for Generalized Convex Optimization
Problems*, 8th International Symposium on Generalized Convexity and Generalized
Monotonicity, Varese, Italy, 4th-8th July, 2005 (Lecturer: G. Wanka)

**R. I. Boţ, G. Wanka ** - *On a New Closed Cone Constraint Qualification*,
Research Seminar of the Chair of analysis and optimization, Faculty of mathematics and informatics of
"Babeş - Bolyai" University Cluj-Napoca, Cluj-Napoca, Romania, 4th November, 2004 (Lecturer: R. I. Boţ)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Fenchel-Lagrange versus Geometric Duality
in Convex Optimization*, Research Seminar of the Chair of analysis and optimization,
Faculty of mathematics and informatics of "Babeş - Bolyai" University Cluj-Napoca,
Cluj-Napoca, Romania, 4th November, 2004 (Lecturer: S.-M. Grad)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Farkas-Type Results with Conjugate
Functions*, 12th French-German-Spanish Conference on Optimization, Avignon,
France, 20th-24th September, 2004 (Poster: S.-M. Grad)

**R. I. Boţ, S.-M. Grad, G. Wanka** - *Fenchel-Lagrange versus Geometric Duality in Convex Optimization*,
12th French-German-Spanish Conference on Optimization, Avignon, France, 20th-24th September, 2004 (Lecturer: R. I. Boţ)

**G. Wanka, R. I. Boţ, S.-M. Grad** - *Multiobjective Semidefinite Programming Duality*,
International Congress of Mathematicians, Peking, China, 20th-28th August, 2002 (Lecturer: G. Wanka)

**G. Wanka, R. I. Boţ** - *An Analysis of Dual Problems in Multiobjective Optimization *,
International Conference on Optimization and Optimal Control, Ulan-Bator, Mongolia, 13th-17th August,
2002 (Lecturer: G. Wanka)

**R. I. Boţ, G. Wanka** - *An Analysis of Dual Problems in Multiobjective Optimization (II)*,
IV Brasilian Workshop on Continuous Optimization, Rio de Janeiro, Brazil, 15th-20th July, 2002 (Lecturer: R. I. Boţ)

**R. I. Boţ, G. Wanka** - *An Analysis of Dual Problems in Multiobjective Optimization (I)*,
IV Brasilian Workshop on Continuous Optimization, Rio de Janeiro, Brazil, 15th-20th July, 2002 (Lecturer: G. Wanka)

**G. Wanka, R. I. Boţ, S.-M. Grad** - *Duality for Multiobjective Convex Semidefinite Programming Problems*,
Colleg Seminar in the post graduate programme GKAAM, Munich, Germany, 13th May, 2002 (Lecturer: R. I. Boţ)

**G. Wanka, R. I. Boţ** - *Duality for the Location Model Involving Sets as Existing Facilities*,
12th Workshop of the GOR-Working Group "decision theory and praxis", Hohenheim, Germany, 21st-23rd March, 2002 (Lecturer: R. I. Boţ)

**G. Wanka, R. I. Boţ, S.-M. Grad** - *Duality for Multiobjective Convex Semidefinite Programming Problems*,
12th Workshop of the GOR-Working Group "decision theory and praxis", Hohenheim, Germany, 21st-23rd March, 2002 (Lecturer: G. Wanka)

**R. I. Boţ** - *An Application of the Theory of Duality for Support Vector Machines*,
Foundationer's meeting of "Gottlieb Daimler- und Karl Benz-Stiftung", Willebadessen, Germany, 14th-16th September, 2001 (Lecturer: R. I. Boţ)

**G. Wanka, R. I. Boţ** - *On the Relations between Different Dual Problems in Convex Optimization*,
Operations Research 2001, Duisburg, Germany, 3rd-5th September, 2001 (Lecturer: G. Wanka)

**R. I. Boţ, G. Wanka** - *A New Duality Approach for Convex Optimization Problems*, Optimization 2001,
Aveiro, Portugal, 23rd-25th July, 2001 (Lecturer: R. I. Boţ)

**R. I. Boţ, G. Wanka** - *A New Duality Approach for Multiobjective Convex Optimization Problems*,
Workshop of PhD students in optimization from Saxony, Freiberg, Germany, 17th July, 2001 (Lecturer: R. I. Boţ)

**G. Wanka, R. I. Boţ** - *Different Dual Problems in Convex Optimization*, 11th Workshop of the GOR-Working Group
"Decision Theory and Applications", Kloster Banz, Germany, 7th-10th March, 2001 (Lecturer: G. Wanka)

**G. Wanka, R. I. Boţ** - *Multiobjective Duality for Convex Ratios*, 10th Workshop of the GOR-Working Group
"decision Theory and Applications", Seeheim, Germany, 16th-18th March, 2000 (Lecturer: R. I. Boţ)

**G. Wanka, R. I. Boţ** - *Multiobjective Duality for Convex-Linear Problems*, Operations Research 1999, Magdeburg,
Germany, 1st-3rd September, 1999 (Lecturer: G. Wanka)

**G. Wanka, R. I. Boţ** - *Duality for Convex Optimization*, 9th Workshop of the GOR-Working Group
"decision Theory and Applications", Chemnitz, Germany, 3rd-5th March, 1999 (Lecturer: G. Wanka)

## Conference talks co-authored by members of our research group

**E.L. Pop, S.-M. Grad** - *Weak minimality by means of the quasi-interior of the ordering cone*,
The Fourteenth International Conference on Applied Mathematics and Computer Science, Cluj-Napoca, Romania,
29-31.08.2013
(Lecturer: E.L. Pop, "Babeş-Bolyai" University Cluj-Napoca)

**E.L. Pop, S.-M. Grad** - *Alternative generalized Wolfe type and Mond-Weir type vector duality*,
The 25^{th} European Conference on Operational Research - EURO-2012, Vilnius, Lithuania,
08-11.07.2012
(Lecturer: E.L. Pop, "Babeş-Bolyai" University Cluj-Napoca)

**L. Cioban, E.R. Csetnek** - *Revisiting the construction of gap functions for variational inequalities via conjugate duality*,
The 25^{th} European Conference on Operational Research - EURO-2012, Vilnius, Lithuania,
08-11.07.2012
(Lecturer: L. Cioban, "Babeş-Bolyai" University Cluj-Napoca)

**E.L. Pop, S.-M. Grad** - *Comparing the optimality conditions obtained for a constrained vector optimization problem via different scalarizations*,
The 10^{th} EUROPT Workshop on Advances in Continuous Optimization, Siauliai, Lithuania,
05-07.07.2012
(Lecturer: E.L. Pop, "Babeş-Bolyai" University Cluj-Napoca)

**L. Cioban, E.R. Csetnek** - *Revisiting the Construction of Gap Functions for Equilibrium Problems via Conjugate Duality*,
The 10^{th} EUROPT Workshop on Advances in Continuous Optimization, Siauliai, Lithuania,
05-07.07.2012
(Lecturer: L. Cioban, "Babeş-Bolyai" University Cluj-Napoca)

**L. Cioban, E.R. Csetnek** - *Sequential optimality conditions for variational inequalities*,
10th International Seminar on Approximation Theory and its Applications, Sibiu, Romania, 24.-27. Mai, 2012
(Lecturer: L. Cioban, "Babeş-Bolyai" University Cluj-Napoca)

**E.L. Pop, S.-M. Grad** - *New Wolfe and Mond-Weir type vector duality*,
10th International Seminar on Approximation Theory and its Applications, Sibiu, Romania, 24.-27. Mai, 2012
(Lecturer: E.L. Pop, "Babeş-Bolyai" University Cluj-Napoca)

**H.V. Boncea, S.-M. Grad** - *Characterizations for ε-duality gap statements for constrained convex optimization problems*, 10th International Seminar on Approximation Theory and its Applications, Sibiu, Romania, 24.-27. Mai, 2012
(Lecturer: H.V. Boncea, "Babeş-Bolyai" University Cluj-Napoca)

**L. Cioban, E.R. Csetnek** - *Duality for ε-variational inequalities via the subdifferential calculus*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: L. Cioban, "Babeş-Bolyai" University Cluj-Napoca)

**D.M. Nechita, R.I. Boţ** - *Looking for exact calculus rules for the Dini-Hadamard subdifferential*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: D. M. Nechita, "Babeş-Bolyai" University Cluj-Napoca)

**A.R. Baias, R.I. Boţ** - *Subdifferential formulae for convex risk functions*,
10th International Symposium on Generalized Convexity and Monotonicity - GCM10, Cluj-Napoca,
Romania, 22nd-27th August, 2011
(Lecturer: A. R. Baias, "Babeş-Bolyai" University Cluj-Napoca)

**R. I. Boţ, D. M. Nechita** - *The Dini-Hadamard subdifferential:
optimality conditions for d.c. programming*, 7th International Conference on Applied Mathematics - ICAM7,
Baia Mare, Romania, 1st-4th September, 2010
(Lecturer: D. M. Nechita, "Babeş-Bolyai" University Cluj-Napoca)

**R. I. Boţ, A. R. Baias** - *Dual representations of monotone and cash-invariant hulls for convex
risk measures*,
7th International Conference on Applied Mathematics - ICAM7, Baia Mare, Romania, 1st-4th September, 2010
(Lecturer: A. R. Baias, "Babeş-Bolyai" University Cluj-Napoca)

**R. I. Boţ, A. R. Baias** - *Subdifferential formulae for convex risk measures*,
The Thirteenth International Conference of
Applied Mathematics and Computer Science, Cluj-Napoca, Romania, 26th-28th August, 2010
(Lecturer: A. R. Baias, "Babeş-Bolyai" University Cluj-Napoca)

**R. I. Boţ, D. M. Nechita** - *On an extension of the Dini-Hadamard subdifferential of the
difference of two functions and local minimization*, The Thirteenth International Conference of
Applied Mathematics and Computer Science, Cluj-Napoca, Romania, 26th-28th August, 2010
(Lecturer: D. M. Nechita, "Babeş-Bolyai" University Cluj-Napoca)

**R. I. Boţ, A. E. Capătă** - *Existence results and gap functions for the generalized
equilibrium problem with composed functions*, A XIII-a conferinţă anuală a Societăţii
de Ştiinţe Matematice din România, Beiuş, Romania, 1st-3rd May, 2009
(Lecturer: A. E. Capătă, "Babeş-Bolyai" University Cluj-Napoca)

**L. Altangerel, R. I. Boţ, G. Wanka** - *Variational principles for vector equilibrium problems via conjugate duality
*, The Second International Conference on Nonlinear
Programming with Applications, Beijing, China, 7th-9th April, 2008 (Lecturer: L. Altangerel, National
University of Mongolia)

**L. Altangerel, R. I. Boţ, G. Wanka** - *Conjugate duality for vector optimization with applications to the
vector variational inequality*, The Second International Conference on Optimization and Optimal
Control - COOC 2007, Ulaanbaatar, Mongolia, 17th-20th July, 2007 (Lecturer: L. Altangerel, National
University of Mongolia)

**R. I. Boţ, R. Chares, G. Wanka** - *
Duality for multiobjective fractional optimization problems*,
20th ORBEL Conference on Quantitative Methods for Decision Making, Gent,
Belgium, 19th-20th January, 2006 (Lecturer: R. Chares, Universite Catholique de Louvain)