Academy of Mathematics and Systems Science, CAS
Colloquia & Seminars

Speaker:	郇真副研究员,华中科技大学数学中心
Inviter:
Title:	2-representations and 2-vector bundles
Language:	Chinese
Time & Venue:	2023.04.06 15:00-17:00 腾讯会议：512-564-929
Abstract:	In this talk I will introduce some basic concepts in higher category and some details of the construction in the first talk. I will introduce crossed modules and the example of strict 2-representation via it. And I will present Murray, Roberts and Wockel’s coherent model of string 2-group and its relation with BCSS model. In addition, I will show the relation between 1-representations and 2-representations after introducing the bicategory of bicategories. Moreover, I will introduce a little descent theory, i.e. how we glue in topology and geometry in a nice way. Higher stack is a higher presheaf in which descent theory works.