Acta Mathematica Vietnamica
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SOME INEQUALITIES FOR NORMAL OPERATORS IN HILBERT SPACES
S. S. DRAGOMIRpp. 291-300
Abstract
Some inequalities for normal operators in Hilbert spaces are given. For this purpose, some results for vectors in inner product spaces due to Buzano, Dunkl-Williams, Hile, Goldstein-Ryff-Clarke, Dragomir-Sándor and the author are employed.