On June 16th, 2026 (Monday) at 5:00 pm in room 503 of IMI-BAS
a joint meeting will be held of the Operations Research Seminar of IMI-BAS
and the Optimization Seminar of the Faculty of Mathematics and Informatics, Sofia University.
A talk on:
The Brondsted-Rockafellar theorem in geodesic spaces
will be delivered by Alejandro Villegas-Acuna (University of Sonora, Mexico).
Abstract: In this talk we discuss a constructive version of the Brondsted–Rockafellar theorem in general geodesic metric spaces.
Applications include a constructive form of the Caristi theorem and quantitative relations between metric slope error
bounds and the global growth of functionals.
Everyone interested in the topic is cordially invited to participate.

