Aller au menu Aller au contenu Aller à la recherche
aA - +Imprimer la page
Chargement Évènements
  • Cet évènement est passé


Alexander Thomas: Topological field theories in 2d from Hecke algebras

« Tous les Évènements

mardi 05 avril 2022 mardi 05 avril 2022

We describe a construction which to a surface and a Iwahori-Hecke algebra associates an invariant which is a Laurent polynomial. More generally, this construction works for surfaces with boundary and behaves well under gluing, giving a non-commutative topological quantum field theory (TQFT). The invariant polynomial has surprising positivity properties, which are proven using Schur elements. We give some ideas on the combinatorial interpretation of the positivity linking to character varieties and integrable systems. Joint work with Vladimir Fock and Valdo Tatitscheff.


Log In

Create an account