Conférence - Teichmüller en grande dimension et symétrie miroir

Lundi, 24 Avril, 2017 - 16:45
Adrien Sauvaget
University Paris (UPMC)
Tautological rings with effective spin structures
Résumé: 

We introduce a family of subrings of the Chow rings of the moduli spaces of r-spin structures called the tautological rings with effective spin structures. These rings are an enrichment of the standard tautological rings with the classes of loci of effec- tive spin structures. We will describe the product in these rings and explain how this presentation of the ring structure together with conjectures of Janda, Pandharipande, Pixton and Zvonkine should allow to compute intersections of Wittens classes.

Partenaires

Irmar LMJL ENS Rennes LMBA LAREMA

Tutelles

ANR CNRS Rennes 1 Rennes 2 Nantes INSA Rennes INRIA ENSRennes UBO UBS Angers UBL