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math.CT2025
Higher Witt Groups for 2-Categories I: Centralizers
Hao Xu
In this article, we investigate monoidal, braided, sylleptic centralizers of monoidal, braided, sylleptic 2-functors. We specifically focus on multifusion 2-categories and show tha…
math.CT2024
On Ãtale Algebras and Bosonic Fusion 2-Categories
Hao Xu
We classify all connected and Lagrangian étale algebras in the Drinfeld center , where is a finite group and is a 4-cocycle on . By…