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Showing papers by "Muneo Chō published in 2004"

Journal Article•DOI•
Isolated points of spectrum of (p, k)-quasihyponormal operators

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Kotaro Tanahashi1, Atsushi Uchiyama, Muneo Chō2•
Tohoku Pharmaceutical University1, Kanagawa University2
01 May 2004-Linear Algebra and its Applications
TL;DR: In this article, it was shown that if λ 0 is an isolated point of σ(T), then E is self-adjoint and EH =ker(T−λ 0)∗, then EH=ker( Tk).

38 citations

Journal Article•DOI•
Trace formulae for p-hyponormal operators

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Muneo Chō1, Tadasi Huruya2•
Kanagawa University1, Niigata University2
01 Jan 2004-Studia Mathematica

6 citations

Journal Article•DOI•
Mosaic and Principal Functions of log-hyponormal Operators

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Muneo Chō1, Tadasi Huruya2, Takeaki Yamazaki1•
Kanagawa University1, Niigata University2
01 Mar 2004-Integral Equations and Operator Theory
TL;DR: In this paper, the authors introduce mosaic and principal functions of log-hyponormal operators associated with Aluthge transformation and discuss determining sets in the context of determining sets with respect to sets.
Abstract: The purpose of this paper is to introduce mosaic and principal functions of log-hyponormal operators associated with Aluthge transformation and discuss determining sets.