Josh Pollitz : Deformations and the homotopy Lie algebra

Posted by Eamon Quinlan-Gallego , part of the Algebraic Geometry Seminar.

At

Feb. 2, 2026, 3 p.m.

In

636 SEO

Abstract

A semi-classical question of Avramov asks whether embedded deformations of a local ring correspond exactly to central elements in the homotopy Lie algebra of the ring. In this talk, I will explain the question and some recent insights. The latter is based on joint work with Briggs, Grifo, and Walker.