Korteweg-de Vries Institute for Mathematics

General Mathematics Colloquium

15Mar2017 16:00 - 16:45


Speaker: Ezra Getzler (Northwestern University, IL, USA)

Title: Quasi-invertibility


In the theory of differential graded algebras (important in the study of moduli problems in geometry, for example), the correct generalization of invertibility is invertibility up to a boundary, or quasi-invertibility. In this talk, we will explain in what sense the quasi-invertible elements form a "Lie group". In fact, they form a generalization of a group called a higher Lie groupoid.


Location: KdVI meeting room, Science Park 107, room F3.20

Published by  Korteweg de Vries Institute