Cohomological classification of braided $Ann$-categories

Nguyen Tien Quang, Dang Dinh Hanh

A braided $Ann$-category $\mathcal{A}$ is an $Ann$-category $\mathcal{A}$ together with a braiding $c$ such that $(\mathcal{A},\otimes ,a,c,(1,l,r))$ is a braided tensor category,…