Séminaire Algèbre Géométrie Algébrique Topologie Algébrique
Thursday 12 February 2026 à 10:00 - Salle 430
Campbell Wheeler (IHES)
Habiro cohomology classes from 3-manifolds
I will describe the Habiro ring and some aspects of how this generalises to a cohomology theory for more general varieties. Then I will explain how perturbative invariants of 3-manifolds can give elements of this cohomology. I will describe the conjectural picture for all 3-manifolds. This is based on joint work with Garoufalidis, Scholze, and Zagier.