On Linear Preservers of lgw-Majorization on $\mathbf{M}_{{n,m}}$
Bulletin of the Malaysian Mathematical Society, Tome 35 (2012) no. 3
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Let $\mathbf{M}_{n,m}$ be the set of all $n\times m$ matrices with entries in $\mathbb{F}$, where $\mathbb{F}$ is the field of real or complex numbers. For $A, B\in \mathbf{M}_{n,m}$, we say that $B$ is lgw-majorized (left generalized weakly majorized) by $A$ if there exists an $n\times n$ g-row stochastic (generalized row stochastic) matrix $R$ such that $B=RA$. In this paper, we characterize all linear operators that strongly preserve lgw-majorization on $\mathbf{M}_{n,m}$ and all linear operators that strongly preserve left weak matrix majorization on $ \mathbf{M}_{n}$.
Classification :
Primary: 15A03, 15A04, 15A51.
@article{BMMS_2012_35_3_a13,
author = {A. Armandnejad and A. Salemi},
title = {On {Linear} {Preservers} of {lgw-Majorization} on $\mathbf{M}_{{n,m}}$},
journal = {Bulletin of the Malaysian Mathematical Society},
year = {2012},
volume = {35},
number = {3},
url = {http://geodesic.mathdoc.fr/item/BMMS_2012_35_3_a13/}
}
A. Armandnejad; A. Salemi. On Linear Preservers of lgw-Majorization on $\mathbf{M}_{{n,m}}$. Bulletin of the Malaysian Mathematical Society, Tome 35 (2012) no. 3. http://geodesic.mathdoc.fr/item/BMMS_2012_35_3_a13/