Sachindranath Jayaraman

activity

20182026

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3 papers · 1 filter

math.FA2025

Maximum principles for matrix-valued regular functions of a quaternionic variable

Sachindranath Jayaraman, Dhashna T. Pillai

A quaternionic matrix-valued regular function is a map $F : Ω \to M_{n} (H)$ whose entries are (left) regular functions of a quaternion variable, where $Ω$ is a domain…

math.FA2019

On linear preservers of semipositive matrices

Sachindranath Jayaraman, Vatsalkumar N. Mer

Given proper cones $K_{1}$ and $K_{2}$ in $R^{n}$ and $R^{m}$ , respectively, an $m \times n$ matrix $A$ with real entries is said to be semipositive if there exists a $x…

math.FA2018

Linear maps on $M_{n} (R)$ preserving Schur stable matrices

Chandrashekaran Arumugasamy, Sachindranath Jayaraman

An $n \times n$ matrix $A$ with real entries is said to be Schur stable if all the eigenvalues of $A$ are inside the open unit disc. We investigate the structure of linear maps on…

Maximum principles for matrix-valued regular functions of a quaternionic variable

On linear preservers of semipositive matrices

Linear maps on Mn​(R) preserving Schur stable matrices

Linear maps on $M_{n} (R)$ preserving Schur stable matrices