East Asian mathematical journal

  • 제17권1호
  • /
  • Pages.87-92
  • /
  • 2001
  • /
  • 1226-6973(pISSN)
  • /
  • 2287-2833(eISSN)
영남수학회 (The Youngnam Mathematical Society)
권호 표지

A NOTE ON THE ESSENTIAL SPECTRUM OF AN IRREDUCIBLE P-HYPONORMAL OPERATOR

  • 발행 : 2001.06.25
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초록

In this paper, we have the extended result of Bunce's theorem. And we show that if T is an irreducible p-hyponormal operator such that T*T-TT* is compact, then ${\sigma}_{ap}(T)={\sigma}_e(T)$ and ${\sigma}_p({\phi}(T))={\sigma}_e({\phi}(T))$.

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