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http://dx.doi.org/10.4134/BKMS.2005.42.4.869

POSITIVE ANSWER TO THE CONJECTURE BY FONG AND ISTRATESCU  

MECHERI SALAH (DEPARTMENT OF MATHEMATICS, KING SUD UNIVERSITY COLLEGE OF SCIENCE)
BACHIR AHMED (DEPARTMENT OF MATHEMATICS, FACULTY OF SCIENCE, KING KHALED UNIVERSITY)
Publication Information
Bulletin of the Korean Mathematical Society / v.42, no.4, 2005 , pp. 869-873 More about this Journal
Abstract
In this note we give a positive answer to the conjecture by Fong and Istratescu.
Keywords
Hermitian operator; hyponormal operators; (WN) class; quasinilpotent operator;
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