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可换环上严格上三角矩阵李代数的拟导子
引用本文:关琦,卞洪亚,陈炳凯.可换环上严格上三角矩阵李代数的拟导子[J].常熟理工学院学报,2011,25(10):42-47.
作者姓名:关琦  卞洪亚  陈炳凯
作者单位:中国矿业大学理学院,江苏徐州,221008
摘    要:设R是含幺可换环,Nn(R)表示R上的所有n×n严格上三角矩阵组成的李代数,对Nn(R)上的一个线性变换φ,若存在Nn(R)上的一个线性变换φ,对任意的x,y∈Nn(R)都有φ(x),y]+x,φ(y)]=φ(x,y]),则称φ为Nn(R)上的拟导子.本文定出了Nn(R)上的任一拟导子的具体形式,并对导子的概念进行了推广.

关 键 词:严格上三角矩阵  导子  拟导子  可换环

Quasi-Derivations of the Lie Algebra of Strictly Upper Triangular Matrices over a Commutative Ring
GUAN Qi, BIAN Hong-ya, CHEN Bing-kai.Quasi-Derivations of the Lie Algebra of Strictly Upper Triangular Matrices over a Commutative Ring[J].Journal of Changshu Institute of Technology,2011,25(10):42-47.
Authors:GUAN Qi  BIAN Hong-ya  CHEN Bing-kai
Institution:(College of Sciences, China University of Mining and Technology, Xuzhou 221008, China)
Abstract:Let R be an arbitrary commutative ring with identity. Denoted by Nn(R) the Lie algebra over R con sisting of all strictly upper triangular n by n matrices. A linear transformation φ on Nn( R) is called a qusi-der ivation of it if there exists a liner transformation φ on Nn(R) such that φ(x),y]+x,φ(y)]=φ(x,y]) for x,y ∈N n (R) . In this paper, the authors characterize all quasi-derivations of N n (R) and generalize the notions of derivations to a more general case.
Keywords:strictly upper triangular matrices Lie algebra  derivation  quasi-derivation  commutative ring
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