Extensions of tensor categories by finite group fusion categories
Extensions of tensor categories by finite group fusion categories
Abstract We study exact sequences of finite tensor categories of the form Rep G โ ๐ โ ๐, where G is a finite group. We show that, under suitable assumptions, there exists a group ฮ and mutual actions by permutations โณ : ฮ ร G โ G and โฒ : โฆ