2 problems

Let $H$ be an internal symmetry group, let $\mathbb{Z}^d$ act by discrete translations, and let $\mathcal{S}^{d}(H,\mathbb{Z}^d)$ denote the set of $(d+1)$-dimensional gapped short…

Generalized cohomology hypothesis. The group structure of $\operatorname{SPT}^d(G)$ should be obtained by computing