پنجمین سمینار نظریه عملگرها و کاربردهای آن , 2019-03-13

Title : ( SHARP INEQUALITIES FOR THE NUMERICAL RADIUS OF BLOCK OPERATOR MATRICES )

Authors: Mohammad Sal Moslehian ,
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Abstract

In this article, we present several sharp upper bounds for the numerical radii of the diagonal parts of the 2 2 block operator matrix A B C D .

Keywords