关于对偶余代数的注记

给出了一个对偶余代数问题的反例．作为反射代数的一个应用，建立了从卷积代数 Ｈｏｍ（ Ｃ， Ａ） 到余代数张量的对偶代数（ Ｃ  Ａ°） 

量子余交换余代数的Smash余积余代数的余模范畴

设(H,m,μ,φ,σ)是一个余拟三角对偶拟双代数,C是一个关于(H,σ)量子余交换的左H-余模余代数.证明了(C×HM,□C,C)是一个张量范畴,并且给出了它成为一个辫化张量范畴的充分必要条件.

Hom-扭曲积和Hom-扭曲余积(英文)

首先给出了对偶Hom-双代数和余对偶Hom-双代数的概念,其次构造了Hom-扭曲积和Hom-扭曲余积并讨论了他们的一些性质.

Duality theorem for smash coproduct over quantum groupoids

The duality theorem of generalized weak smash coproducts of weak module coalgebras and comodule coalgebras over quantum groupoids is studied.Let H be a weak Hopf algebra,C a left weak H-comodule coalgebra and D a left weak H-module coalgebra.First,a weak generalized smash coproduct C×lH D over quantum groupoids is defined and the module and comodule structures on it are constructed.The weak generalized right smash coproduct C×rL D is similar.Then some isomorph-isms between them are obtained.Secondly,by introducing some concepts of a weak convolution invertible element,a weak co-inner coaction and a strongly relative co-inner coaction,a sufficient condition for C×rH D to be isomorphic to Cv D is obtained,where v∈WC（C,H）and the coaction of H on D is right strongly relative co-inner.Finally,the duality theorem for a generalized smash coproduct over quantum groupoids,（C×lH H）×lH H≌Cv（H×lH H）,is obtained.

A Note on Functor( )~0

We construct a counter-example about functor（ )0, and prove an isomor-phism theorem front convolution algebra to dual algebra of tensor coalgebra，