Yu Zeng

collaborators

2 papers

math.GR2025

Character codegrees, kernels, and Fitting heights of solvable groups

Guohua Qian, Yu Zeng

For an irreducible character $χ$ of a finite group $G$ , let $cod (χ) := ∣ G : ker (χ) ∣/ χ (1)$ denote the codegree of $χ$ , and let $cod (G)$ be the set of irreducible cha…

math.GR2024

Finite groups in which every irreducible character has either $p^{'}$ -degree or $p^{'}$ -codegree

Guohua Qian, Yu Zeng

For an irreducible complex character $χ$ of a finite group $G$ , the codegree of $χ$ is defined by $∣ G : ker (χ) ∣/ χ (1)$ , where $ker (χ)$ is the kernel of $χ$ . Given a prime $p$ , we pr…

Character codegrees, kernels, and Fitting heights of solvable groups

Finite groups in which every irreducible character has either p′-degree or p′-codegree

Finite groups in which every irreducible character has either $p^{'}$ -degree or $p^{'}$ -codegree