Chi Li

collaborators

2 papers

math.FA2023

Linear maps preserving matrices annihilated by a fixed polynomial

Chi-Kwong Li, Ming-Cheng Tsai, Ya-Shu Wang +1

Let $M_{n} (F)$ be the algebra of $n \times n$ matrices over an arbitrary field $F$ . We consider linear maps $Φ: {\bf M}_n(\mathbb{F}) \rightarrow {\bf M}_r(\ma…

math.RA2020

Nonsurjective zero product preservers between matrix spaces over an arbitrary field

Chi-Kwong Li, Ming-Cheng Tsai, Ya-Shu Wang +1

A map $Φ$ between matrices is said to be zero product preserving if $Φ (A) Φ (B) = 0 whenever A B = 0.$ In this paper, we give concrete descriptions of an additiv…