On the cohomology of Frobenius algebras II ☆: Crossed products
On the cohomology of Frobenius algebras II ☆: Crossed products
复制标题
论 Frobenius 代数 II ☆ 的上同调:叉积
DOI:
10.1016/0022-4049(92)90071-m
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发表时间:
1992
期刊:
影响因子:
--
通讯作者:
K. Sanada
中科院分区:
文献类型:
--
作者:
K. Sanada
This paper is a continuation of the previous paper [7]. Let R be a commutative ring. Let r be a Frobenius algebra over R and A be a Frobenius R-subalgebra of r such that the extension of rings r/A is a Frobenius extension. The purpose of this paper is to give certain relations between the complete cohomology group in the sense of Nakayama [6] of r and that of A, along the cohomology theory of finite groups as in [2, 3, 5, 81. More precisely, to reduce the calculation of H’(T,-) to that of H’(A,-) by defining a restriction map, a corestriction map, and in particular a conjugation map when r is a crossed product over A. In Section 1, we will show some general facts for a Frobenius extension r of a Frobenius R-algebra A, and we will define the restriction map