Orateur: Anthony
Conway (Université de Genève) :
Titre: Tangles and
signatures.
Résumé:
Given a braid, taking the signature of its closure provides a map
from the braid group to the integers. The multiplicative default of this
signature map can be computed in terms of the Burau representation. In this
talk, I will express the multiplicative default of the multivariable
signature of colored tangles in terms of an isotropic functor.