3 problems

Let $a$ and $\hat a$ be ${\mathbb Z}_n$-valued 1-cochains. Consider the Euclidean theory with action … It has a ${\mathbb Z}_n\times{\mathbb Z}_n$ 1-form symmetry and a…

Let $a$ be a ${\mathbb Z}_2$-valued 1-cochain on a triangulated 3-manifold, with Euclidean action … This theory has a global 1-form symmetry $a\mapsto a+\alpha$ for a 1-cocycle…

Module-category conjecture. The 2-category of surface operators at $t=0$ can be described in terms of module categories over the monoidal category of boundary line operators for th…