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Maryam Khosravi

Publications and source records attributed to Maryam Khosravi.

5 recordsLinked to original sources
arXiv2026

A Comparison of some Weighted Numerical Radii of Hilbert Space Operators

In recent years, several generalizations of the numerical radius for bounded linear operators on Hilbert spaces have been introduced and extensively studied. These generalizations provide refined tools for investigating operator inequalities and spectral properties. In this paper, we investigate several generalized numerical radii and establish relationships among them. We also establish several relationships among these generalized numerical radii and show that the $(s,t)$-weighted numerical radius can be represented as a rescaled form of the $t$-weighted numerical radius.

math.FA↗
arXiv2023

Some applications of linear algebraic methods in combinatorics

In this note, we intend to produce all latin squares from one of them using suitable move which is defined by small trades and do the similar work on 4-cycle systems. These problems, reformulate as finding basis for the kernel of special matrices, representef to some graphs.

math.CO↗
arXiv2020

Sharp operator mean inequalities of the numerical radii

We present several sharp upper bounds and some extension for product operators. Among other inequalities, it is shown that if , , are non-negative continuous functions on such that , , then for all non-negative operator monotone decreasing function on , we obtain that As an application of the above inequality, it is shown that where, and .

math.FA↗