Martina Rovelli

Date: February 10, 2022
Time: 10:00 am - 11:00 am
Location: Zoom (email sacha.ikonicoff at for more info)

Title: An (∞,2)-categorical pasting theorem

Abstract: Power’s 2-categorical pasting theorem, asserting that any pasting diagram in a 2-category has a unique composite, is at the basis of the 2-categorical graphical calculus, which is used extensively to develop the theory of 2-categories. In this talk we discuss an (∞,2)-categorical analog of the pasting theorem, asserting that the space of composites of any pasting diagram in an (∞,2)-category is contractible. This result, which is joint with Hackney—Ozornova—Riehl, rediscovers independent work by Columbus.