Dear colleagues, we are happy to announce the workshop Structuring Combinatorial Problems with Symmetry <http://structuring-combinatorial-problems-with-symmetry-26.tobiasmetzlaff.com/> to take place at *Chemnitz University of Technology *in *Germany *from *24–26 **June** 2026*. The workshop focuses on the systematic and algorithmic use of symmetry as well as group-theoretic and optimization-based methods in the study of combinatorial and geometric problems. We bring together researchers working in discrete mathematics, polynomial optimization, applied real algebraic geometry as well as group and representation theory where symmetry plays a structural or algorithmic role. The goal is to foster exchange between intertwining perspectives and to stimulate further collaboration in this active area. Lectures will be given by: * Daniel Brosch <https://www.danielbrosch.com/> (Klagenfurt) * Nidhi Kaihnsa <https://sites.google.com/view/kaihnsa/about> (Copenhagen) * Nando Leijenhorst <https://nanleij.github.io/> (Toulouse) * Philippe Moustrou <https://pmoustro.perso.math.cnrs.fr/index.html> (Toulouse) * Sven Polak <https://sites.google.com/site/svenpolak/> (Tilburg) * Leonie Scheeren <https://www.mathematik.rwth-aachen.de/cms/mathematik/fachgruppe/Institute-Lehrstuehle/Personen/~bkbg/Mitarbeiter-CAMPUS-/?gguid=PER-WN9RPS4&lidx=1> (Aachen) * Frank Vallentin <https://www.mi.uni-koeln.de/opt/frank-vallentin/> (Cologne) In order to register, send an email to sebastian.debus@uni-konstanz.de or math@tobiasmetzlaff.com with the subject "Registration SPP26 Symmetry", indicating your name and affiliation. There is no registration fee. On request, we will share a zoom link for remote participation. We welcome contributed talks of 30 minutes. To propose a talk, indicate so in your registration email and include a title and short abstract. For further information on the program, speakers, and registration, visit the official webpage: http://structuring-combinatorial-problems-with-symmetry-26.tobiasmetzlaff.com/ Kind regards, Sebastian Debus, Tobias Metzlaff, Christoph Helmberg ********************************************************** * * Contributions to be spread via DMANET are submitted to * * DMANET@zpr.uni-koeln.de * * Replies to a message carried on DMANET should NOT be * addressed to DMANET but to the original sender. The * original sender, however, is invited to prepare an * update of the replies received and to communicate it * via DMANET. * * DISCRETE MATHEMATICS AND ALGORITHMS NETWORK (DMANET) * http://www.zaik.uni-koeln.de/AFS/publications/dmanet/ * **********************************************************