The goal of this special session is to offer a review of research themes, methods, and open problems in optimization theory and variational problems, together with outlines of the new research trends. Topics of interest include (but are not limited to):

• Variational problem
• Equilibrium problem
• Continuity, regularity and well-posedness of solutions
• Duality theory
• Multiobjective optimization
• Non-regular optimization problems
• Multicriteria optimization

• Monica Milasi (University of Messina, Italy) - mmilasi@unime.it
• Gabriel Ruiz-Garzón (University of Cadiz, Spain)

Below you can download the schedule and the abstracts of all talks of this special session.

• Monica Bianchi (Catholic University of the Sacred Heart, Milan, Italy)

           Linear openness of the composition of set-valued maps and applications to variational systems

• Maria Bernadette Donato (University of Messina, Italy)

           A necessary optimality condition in vector optimization problems in an infinite dimensional space

• María del Carmen Escribano Ródenas (University CEU San Pablo, Spain)

           Computers and outranking relations: an inseparable link reinforced over the time

• Beatriz Hernández-Jiménez (University Pablo de Olavide, Sevilla, Spain)

           Optimality  conditions for efficiency in multiobjective problems with conic constraints. Characterization of solutions and Duality

• Mariano Luque (University of Málaga, Spain)

           Reference point approaches in Stochastic Multiobjective Programming

• Enrico Miglierina (Catholic University of the Sacred Heart, Milan, Italy)

          Geometric properties of ordering cones in infinite dimensional vector optimization

• Monica Milasi (University of Messina, Italy)

           Approximation of quasiconvex functions and application

• Elena Molho (University of Pavia, Italy)

          Scalarization in set optimization

• Gabriel Ruiz-Garzón (University of Cádiz, Spain)

           Invexity and Variational-like Inequalities in Fuzzy Context