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Papers by hanane guelfen
Numerical Functional Analysis and Optimization, 2019
The aim of this article is to prove several new numerical radius inequalities for n  n operator ... more The aim of this article is to prove several new numerical radius inequalities for n  n operator matrices on a Hilbert space. Let H 1 ; H 2 ;. .. ; H n be complex Hilbert spaces, and let T ¼ ½T ij be an n  n operator matrix with T ij 2 BðH j ; H i Þ. Among other inequalities, it shown that ARTICLE HISTORY
Numerical Functional Analysis and Optimization, 2019
The aim of this article is to prove several new numerical radius inequalities for n  n operator ... more The aim of this article is to prove several new numerical radius inequalities for n  n operator matrices on a Hilbert space. Let H 1 ; H 2 ;. .. ; H n be complex Hilbert spaces, and let T ¼ ½T ij be an n  n operator matrix with T ij 2 BðH j ; H i Þ. Among other inequalities, it shown that ARTICLE HISTORY