# Algebra/Topology seminar

Speaker: Espen Nielsen (KU).

Title: Topological Hochschild homology and topological conformal field theory.

Abstract: I will define formal operations on topological Hochschild homology of algebras over a fixed PROP, and sketch the computation of these operations in the case of open TCFTs (AKA Frobenius algebras). As a consequence, I obtain extension results for TCFTs which generalize previous ideas of Costello and extend the work of Wahl and Westerland.