Local Derivations of a Matrix Algebra over a Commutative Ring

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作者：
Xian WANG Department of Mathematics China University of Mining and Technology Jiangsu P R China [221008 ]
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来源：
数学研究与评论 | 2011年 / 31卷 / 05期
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中图分类号：
O153.3 [环论];
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摘要：
Let R be a commutative ring with identity, Nn(R) the matrix algebra consisting of all n × n strictly upper triangular matrices over R. Several types of proper local derivations of Nn(R) (n ≤ 4) are constructed, based on which all local derivations of Nn(R) (n ≤ 4) are characterized when R is a domain.
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页码：781 / 790
页数：10
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