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Putnam’s inequality for p-hyponormal n-tuples

Published online by Cambridge University Press:  01 March 1999

MUNEO CHŌ  and
TADASI HURUYA
MUNEO CHŌ
Affiliation:
Department of Mathematics, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama, 221 Japan
TADASI HURUYA
Affiliation:
Department of Mathematics, Faculty of Education, Niigata University, Niigata, 950-21 Japan
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Abstract

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Dedicated to the memory of Professor Katsutoshi Takahashi

In this paper, we introduce p-hyponormal tuples in the sense of D. Xia. Furthermore we extend Putnam’s inequality to these tuples and show an equivalence relation of two spectra.

Information

Type
Research Article
Information
Glasgow Mathematical Journal , Volume 41 , Issue 1 , March 1999 , pp. 13 - 17
Copyright
1999 Glasgow Mathematical Journal Trust