π-H-余模代数与π-H-余模子代数

摘要

研究了π-H-余模子代数的相关性质。借助对偶原理证明了M 是π-H-余模代数A的π-H-余模子代数当且仅当M⊥是π-H-模余代数A的π-H-模余理想。%Some properties of π-H-comodule subalgebra are studied. With the help of the dual principle, we prove that M is aπ-H-comodule subalgebra of A if and only if M⊥ is aπ-H-module coideal of A.