数学物理学报(英文版)

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HOMOMORPHISMS BETWEEN MULTIPLICATIVE SEMIGROUPS OF MATRICES OVER FIELDS

张显; 曹重光   

  1. 黑龙江大学数学学院, 哈尔滨 150080
  • 收稿日期:2005-10-08 修回日期:2006-09-05 出版日期:2008-04-20 发布日期:2008-04-20
  • 通讯作者: 张显
  • 基金资助:

    This work is supported in part by the Chinese NSF under Grant No. 10271021, the Younth Fund of Heilongjiang Province and the Fund of Heilongjiang Education Committee for Oversea Scholars under Grant No. 1054HQ004

HOMOMORPHISMS BETWEEN MULTIPLICATIVE SEMIGROUPS OF MATRICES OVER FIELDS

Zhang Xian; Cao Chongguang   

  1. School of Mathematical Science, Heilongjiang University, Harbin 150080, China
  • Received:2005-10-08 Revised:2006-09-05 Online:2008-04-20 Published:2008-04-20
  • Contact: Zhang Xian

摘要:

Suppose F is a field, and n,p are integers with 1≤ pn( F) be the multiplicative semigroup of all n× n matrices over F, and let Mnp( F) be its subsemigroup consisting of all matrices with rank p at most. Assume that F and R are subsemigroups of Mn( F)
such that F\supseteq Mnp( F). A map f:F \rightarrow R is called a homomorphism if f(AB)=f(A)f(B) for any A,B∈ F. In particular, f is called an endomorphism if F= R. The structure of all homomorphisms from F to R (respectively, all endomorphisms of Mn( F)) is described.

关键词: Homomorphism, endomorphism, multiplicative semigroup of matrices

Abstract:

Suppose F is a field, and n,p are integers with 1≤ pn( F) be the multiplicative semigroup of all n× n matrices over F, and let Mnp( F) be its subsemigroup consisting of all matrices with rank p at most. Assume that F and R are subsemigroups of Mn( F)
such that F\supseteq Mnp( F). A map f:F \rightarrow R is called a homomorphism if f(AB)=f(A)f(B) for any A,B∈ F. In particular, f is called an endomorphism if F= R. The structure of all homomorphisms from F to R (respectively, all endomorphisms of Mn( F)) is described.

Key words: Homomorphism, endomorphism, multiplicative semigroup of matrices

中图分类号: 

  • 20M15