Matthieu JOSEPH

Séminaire Groupes et actions (2024-2025)


Organisateurs : Camille Horbez et Matthieu Joseph.
Subventionné par l'ERC Artin-Out-ME-OA (P.I. Camille Horbez).
Les lundis, de 14h à 15h, salle 2L8, bâtiment 307, Université Paris-Saclay, Orsay.

Programme à venir :

  • Lundi 16 juin : Michah Sageev (Technion)
  • ⚠ Horaire et salle de séminaire inhabituels : 11h30 - 12h30 en salle 3L8
  • Topological median algebra structures on euclidean spaces.
  • CAT(0) cube complexes are have a description in terms of median algebras. This description lends itself to generalization, one of which is the notion of a topological mdian algebra. We will discuss an initial exploration into a characterization of topological median algebra structures on euclidean spaces in terms what we term “web structures”. This characterization works for ER homology manifolds as well. This is joint work with Bestvina and Bromberg.

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