Ya-Shu Wang

activity

20192024

most citedJoint numerical ranges and communtativity of matrices

1 citations · 2 across the 5 of their papers we have counts for

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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.FA2020★ 1 cited

Joint numerical ranges and communtativity of matrices

Chi-Kwong Li, Yiu-Tung Poon, Ya-Shu Wang

The connection between the commutativity of a family of $n \times n$ matrices and the generalized joint numerical ranges is studied. For instance, it is shown that $F$ is a f…