On the Judgement for Operator Point Spectrum of Operator
Received:December 17, 1996  
Key Words: hyponormal operator   operator point spectrum.  
Fund Project:
Author NameAffiliation
Yuan Guochang Hubei Yichang Forestry Technical School
Yichang 443100 
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Abstract:
      In this paper, we discuss the judgement conditions that A∈B(H)N is the operator point spectrum of T∈B(H) . In particular, a condition is given for A∈Λp(T) when T is a hyponormal operator and A is commutable for T and T*. Additionally, we obtain the judgement condition forkerτT,A=kerτT,A.
Citation:
DOI:10.3770/j.issn:1000-341X.1999.05.015
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