Four-angle Hopf modules for Hom-Hopf algebras

Xiaoqian Liu, Dongdong Yan, Xuchen Deng +1

In this paper, we introduce the notion of a four-angle Hopf module for a Hom-Hopf algebra $(H,{\hat{I}}^2)$ and show that the category ${}_H^H{\mathfrak{M}}_H^H$ of four-angle Hopf mo…