Doi-Hopf modules and Yetter-Drinfeld modules for quasi-Hopf algebras

D. Bulacu, S. Caenepeel, B. Torrecillas

For a quasi-Hopf algebra $H$, a left $H$-comodule algebra $\mf{B}$ and a right $H$-module coalgebra $C$ we will characterize the category of Doi-Hopf modules ${}^C{\cal M}(H)_{\mf{…