Séminaires : Géométrie énumérative

Equipe(s) : aa,
Responsables :Penka Georgieva, Ilia Itenberg.
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Description

Orateur(s) Alexander Thomas - Institut Max-Planck, Bonn,
Titre Topological field theories from Hecke algebras
Date28/01/2022
Horaire14:00 à 15:00
Diffusion
RésumeWe 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. Joint work with Vladimir Fock and Valdo Tatitscheff.
Salle15-16-413
AdresseJussieu
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