数学物理学报

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Hilbert空间上两个正交射影的乘积

姚喜妍; 杜鸿科   

  1. 运城学院应用数学系 运城 044000
  • 收稿日期:2005-06-08 修回日期:2006-11-30 出版日期:2007-08-25 发布日期:2007-08-25
  • 通讯作者: 姚喜妍
  • 基金资助:
    山西省重点扶持学科基金(20055026)和运城学院重点科研项目(20060103)资助

Product of two Orthogonal Projections in a Hilbert Space H

Yao Xiyan; Du Hongke

  

  1. Department of Mathematics, Yuncheng University, Shanxi, 044000
  • Received:2005-06-08 Revised:2006-11-30 Online:2007-08-25 Published:2007-08-25
  • Contact: Yao Xiyan

摘要: 该文研究Hilbert空间H上正则射影对(P,Q)的性质和结构,给出H上有界线性算子A表示为两个正交射影乘积的充分必要条件.

关键词: 正交射影;正则射影;正算子;谱

Abstract: In this paper, structure of regular pairs of orthogonal projections are established. Moreover, a necessary and sufficient condition for an operator A to be able represented as a product of two orthogonal projections is given.

Key words: Orthogonal projection, Regular projection, Positive operator, Spectrum

中图分类号: 

  • 47A10