Article ID Journal Published Year Pages File Type
4588243 Journal of Algebra 2007 23 Pages PDF
Abstract

In this paper we prove that if is a morphism of weak Hopf algebras which is split as an algebra–coalgebra morphism, then the subalgebra of coinvariants BH of B is a Hopf algebra in the category of Yetter–Drinfeld modules associated to H.

Related Topics
Physical Sciences and Engineering Mathematics Algebra and Number Theory