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投射可迁环上矩阵环的若当同态
引用本文:黄礼平,周冬华,王永威.投射可迁环上矩阵环的若当同态[J].应用数学与计算数学学报,2014(4):416-423.
作者姓名:黄礼平  周冬华  王永威
作者单位:长沙理工大学数学与计算科学学院,长沙410114
基金项目:Progect supported by the National Natural Science Foundation of China(11371072)
摘    要:设R′是一个环,Mn′(R′)是R′上的n′×n′矩阵环.如果环R有不变基数性质并且每个有限生成的投射左R-模是自由模,则R是一个投射自由环.如果环R≌Mr(S),其中S是一个投射自由环,则R是一个投射可迁环.当R是一个投射可迁环时,给出了从Mn′(R′)到Mn(R)(n′≥n≥2)的若当同态的代数公式.

关 键 词:若当同态  投射自由环  投射可迁环  矩阵环  环同态

Jordan homomorphisms on matrix rings over projective-trivial ring
HUANG Li-ping,ZHOU Dong-hua,WANG Yong-wei.Jordan homomorphisms on matrix rings over projective-trivial ring[J].Communication on Applied Mathematics and Computation,2014(4):416-423.
Authors:HUANG Li-ping  ZHOU Dong-hua  WANG Yong-wei
Institution:(School of Mathematics and Computer Science, Changsha University of Science and Technology, Changsha 410114, China)
Abstract:Let R’ be a ring and Mn’(R’) the n’ × n’ matrix ring over R’.A ring R is a projective-free ring if it has the invariant basis number property and every finitely generated projective left R-module is free.A ring R is a projectivetrivial ring if there is a projective-free ring S such that R(?)Mr(S).When R is a projective-trivial ring,the algebraic formulas of Jordan homomorphisms from Mn’(R’) to Mn(R)(n’ ≥n≥ 2) are given.
Keywords:Jordan homomorphism  projective-free ring  projective-trivial ring  matrix ring  ring homomorphism
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