Hochschild Cohomology of Triangular Matrix Algebras

Hochschild Cohomology of Triangular Matrix Algebras
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DOI:
10.1006/jabr.2000.8423
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发表时间:
2000-11
期刊:
影响因子:
0.9
通讯作者:
S. Michelena;M. Platzeck
S. Michelena;M. Platzeck
中科院分区:
数学3区
文献类型:
--
作者:
S. Michelena;M. Platzeck

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研究了三角形矩阵环B = r0 A M R A的Hochschild上同调,其中A和R是代数闭域K上的有限维代数,M是A-R-双模。证明了与A, R, B的Hochschild上同调有关的两个k -向量空间的长精确序列的存在性。
Abstract We study the Hochschild cohomology of triangular matrix rings B = R 0 A M R A , where A and R are finite dimensional algebras over an algebraically closed field K and M is an A-R-bimodule. We prove the existence of two long exact sequences of K-vector spaces relating the Hochschild cohomology of A, R, and B.