Minghui Ma

activity

20242026

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math.OA2025

Irreducible operators in von Neumann algebras

Sukitha Adappa, Minghui Ma, Junhao Shen +2

Let $M$ be a separable von Neumann algebra with center $Z (M)$ . An operator $T$ in $M$ is called irreducible if the von Neumann algebra $W^*(…

math.OA2025

Free semigroupoid algebras and the first cohomology groups

Linzhe Huang, Minghui Ma

This paper investigates derivations of the free semigroupoid algebra $L_{G}$ of a countable or uncountable directed graph $G$ and its norm-closed version, the tensor algeb…