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Paper detail

Numerical radii of accretive matrices

The numerical radius of a matrix is a scalar quantity that has many applications in the study of matrix analysis. Due to the difficulty in computing the numerical radius, inequalities bounding it have received a considerable attention in the literature. In this article, we present many new bounds for the numerical radius of accretive matrices. The importance of this study is the presence of a new approach that treats a specific class of matrices, namely the accretive ones. The new bounds provide a new set of inequalities, some of which can be considered as refinements of other existing ones, while others present new insight to some known results for positive matrices.

preprint2020arXivOpen access
Yassine BedraniFuad KittanehMohammed Sababheh
math.FA
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Yassine BedraniFuad KittanehMohammed Sababheh

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