Positive answer to the conjecture by Fong and Istratescu
Bull. Korean Math. Soc. 2005 Vol. 42, No. 4, 869-873
Published online December 1, 2005
Salah Mecheri and Ahmed Bachir
King Saud University College of Science, King Khaled University
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
MSC numbers : Primary 47A10, 47A30, 47B20; Secondary 47B10
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