Exposés dans le cadre de la deuxième année de thèse. Chaque exposé durera 30 minutes et sera en anglais. First Talk :  « Brauer algebras of complex reflection groups » by Ilias Andreou (LMV) Abstract :  Brauer algebras were introduced by Brauer in 1937

Abstract: Let G be a quasi-split form of a symplectic, unitary or orthogonal group defined over a non-archimedean local field of odd residue characteristic. Every smooth irreducible representation of a p-adic classical group G contains a semisimple character, a certain arithmetic

Abstract :  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