Algebra/Topology Seminar by Kaj Borjeson

Algebra/Topology Seminar

Speaker: Kaj Borjeson

Title: Hochschild cohomology and A∞-algebras

Abstract: Hochschild cohomology can be used to compute free loop space homology. When the spaces are formal and coformal we can make extensive use of Koszul duality. I will talk about how this works and how one is naturally led to consider Koszul duality for A∞-algebras when the spaces fail to be formal and coformal.