数学物理学报 ›› 2008, Vol. 28 ›› Issue (6): 1194-1205.

• 论文 • 上一篇    下一篇

矩阵代数上的可乘保持映射

安桂梅|侯晋川   

  1. (南开大学数学科学学院 天津 300071)
  • 收稿日期:2006-10-10 修回日期:2008-06-08 出版日期:2008-12-25 发布日期:2008-12-25
  • 通讯作者: 安桂梅
  • 基金资助:

    南开大学创新青年基金、核心数学与组合数学教育部重点实验室(LPMC)资助

Multiplication-Preserving Maps On Matrix Algebras

An Guimei|Hou Jinchuan   

  1. (Department of Mathematics, Shanxi Teachers University, Shanxi Linfen 041004)
  • Received:2006-10-10 Revised:2008-06-08 Online:2008-12-25 Published:2008-12-25
  • Contact: An Guimei

摘要:

在该文中,作者对矩阵代数 Mn(F)(其中F 表示任意域)上的可乘映射及保秩可乘映射的结构进行了描述. 并应用之进一步刻画了复矩阵代数上保持谱半径, 数值域, 数值域半径, 自伴矩阵, 正矩阵, 正规矩阵, 或酉矩阵等性质不变的可乘映射.

关键词: 可乘映射, 秩, 谱半径, 正规矩阵

Abstract:

In this paper, we give some structure features of the multiplicative maps and the rank preserving multiplicative maps on matrix algebra Mn(F), where F is a field. By applying these results, we get some characterizations of the multiplicative maps on complex matrix algebras which preserve any one of the spectral radius, numerical radius, numerical range, positivity, self-adjointness, normality and unitarity of matrices.

Key words: Multiplicative maps, Rank, Spectral radius, Normal matrices

中图分类号: 

  • 15A03