UCalgary Peripatetic Seminar: Éric Hoffbeck

  • Date: 01/27/2022
  • Time: 09:00
Éric Hoffbeck, Sorbonne



From Trees to Infinity-operads


The first goal of this talk will be to introduce the dendroidal world, which generalises the simplicial world. Instead of working with the category Delta, we will work with the category Omega, a category of trees, introduced by Moerdijk and Weiss. Presheaves on Delta are called dendroidal sets and generalise simplicial sets. I will explain how operads and infinity-operads appear in this setting. In a second part, I will introduce a notion of homology for infinity-operads, using a bar construction. This is a joint work with Ieke Moerdijk.

Other Information: 

Time: 9–10am PST or 10–11am MDT
Location: Zoom (email sacha.ikonicoff at ucalgary.ca for more info)