Witt group of non-degenerate braided fusion categories
组织者
演讲者
时间
2025年03月19日 14:00 至 15:30
地点
A3-2-301
线上
Zoom 230 432 7880
(BIMSA)
摘要
The collection of non-degenerate braided fusion categories possesses a certain equivalence relation, the so-called Witt equivalence (invertible morphisms in the higher Morita category). The set of equivalence classes form an abelian group (the Witt group). Although this group has been calculated as an abstract group (as a direct sum of cyclic groups) not much is known about its generators.