Acta mathematica scientia,Series B

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REDUCED MINIMAL NUMERICAL RANGES OF OPERATORS ON A HILBERT SPACE

Du Hongke1; Wang Yueqing1,2; Lu Jianming1   

  1. 1.College of Mathematics and Information Science, Shaanxi Normal University, Xi’an 710062, China
    2.Department of Mathematics and Physics, Chongqing University of Science and Technology, Chong’qing 400042, China
  • Received:2006-11-06 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20
  • Contact: Du Hongke

Abstract:

In this note, the reduced minimal numerical ranges of a bounded linear oper-
ators on a Hilbert space are defined and some of its properties are established.

Key words: Reduced minimum numerical range, maximal numerical range, numerical range

CLC Number: 

  • 47A12
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