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机构地区:[1]东南大学数学系,南京211189 [2]河南师范大学数学与信息科学学院,新乡453007
出 处:《Journal of Southeast University(English Edition)》2013年第1期103-105,共3页东南大学学报(英文版)
基 金:The Research and Innovation Project for College Graduates of Jiangsu Province(No.CXLX_0094);the Natural Science Foundation of Chuzhou University(No.2010kj006Z)
摘 要:Let π be a group with a unit 1; H is a Hopf π- coalgebra and A is a right π-H-comodule algebra. First, the notion of a two-sided relative (A, H)-Hopf π-comodule is introduced; then it is obtained that Hom A H (M, N) H and HOMA(M, N) are isomorphic as right Hopf π-H-comodules, where Hom A H(M, N) denotes the space of right A-module fight H-comodule morphisms and HOMa (M, N) denotes the rational space of a space Hom A(M, N) of right A-module morphisms. Secondly, the structure theorem of endomorphism algebras of two-sided relative (A, H)-Hopf π--comodules is established; that is, End A H (M)#H and END A(M, N) are isomorphic as fight Hopf π-H-comodules and algebras.设π是一个带有单位元1的群,H是一个Hopfπ-余代数,A是一个右π-H-余模代数.首先,引入双边相对(A,H)-Hopfπ-余模的概念,进而得到了HomHA(M,N)H和HOMA(M,N)作为右Hopfπ-H-余模是同构的结论,其中HomHA(M,N)表示右A-模和右H-余模同态作成的空间,HOMA(M,N)表示右A-模同态构成空间HomA(M,N)的有理空间.其次,得到了双边相对(A,H)-Hopfπ-余模的自同态代数的结构定理,即EndHA(M)#H和ENDA(M,N)作为右Hopfπ-H-余模和代数是同构的.
关 键 词:Hopf group-coalgebra Hopf group-comodule algebra two-sided relative Hopf group-comodule
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