Bangxin Wang

collaborators

2 papers

math.CT2026

Crossed-module crossed braided categories

Azat M. Gainutdinov, Ingo Runkel, Bangxin Wang

For a crossed module $χ : G \to H$ , we introduce the notion of $χ$ -crossed braided (resp. ribbon) categories, where the categories are graded by group $G$ and carry an $H$ -action. O…

math.GT2024

Hennings TQFTs for Cobordisms Decorated With Cohomology Classes

Marco De Renzi, Jules Martel, Bangxin Wang

Starting from an abelian group $G$ and a factorizable ribbon Hopf $G$ -bialgebra $H$ , we construct a TQFT $J_{H}$ for connected framed cobordisms between connected surfaces with conne…