4 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…

Let $p$-dimensional excitations have a $(d-p-1)$-form symmetry with finite fusion group $G$ in $d$ spatial dimensions. Let $X$ be a simplicial complex triangulating the $d$-sphere…

Walker–Wang models based on ${\mathbb Z}_n$ are lattice models whose continuum limit is expected to admit a topological field-theory description. Walker–Wang continuum-limit conjec…