设A是一Hopf代数,H是余代数。利用由A.L.Agore和G.Militaru所定义的unified积和smash余积来构建双代数结构,并且在A和H均为Hopf代数时给出双代数A H的对极。
Let A be a Hopf algebra and H a coalgebra. The bialgebra structure of A■H is constructed,and the antipode of bialgebra A■H is given when A and H are both Hopf algebras.