26 citations · 26 across the 2 of their papers we have counts for
2 papers
math.QA2004★ 26 cited
Yetter-Drinfeld modules over weak Hopf algebras and the center construction
S. Caenepeel, Dingguo Wang, Yanmin Yin
We introduce Yetter-Drinfeld modules over a weak Hopf algebra , and show that the category of Yetter-Drinfeld modules is isomorphic to the center of the category of -modules.…
math.QA2002
Twistings, crossed coproducts and Hopf-Galois coextensions
S. Caenepeel, Dingguo Wang, Yanxin Wang
Let be a Hopf algebra. Ju and Cai introduced the notion of twisting of an -module coalgebra. In this note, we study the relationship between twistings, crossed coproducts an…