Qiang Zhang

collaborators

3 papers

math.GR2026

Finitely generated Howson groups which are not strongly Howson

Ke Wang, Qiang Zhang

A group $G$ is called a Howson group if the intersection of any two finitely generated subgroups of $G$ is again finitely generated. It is called strongly Howson if, in addition, t…

math.GR2026

An Explicit Bound for the Conjugator Length Function of a Surface Group

Ke Wang, Qiang Zhang

For a surface group $I ¨ _{1} (I^£_{g}) = ⟨ c_{1}, \dots, c_{2 g} ∣ c_{1} \dots c_{2 g} c_{1}^{- 1} \dots c_{2 g}^{- 1} ⟩$ with genus $g \geq 2$ , we provide an explicit bound $n-1\leq \mathr…

math.GT2024

Iwip endomorphisms of free groups and fixed points of graph selfmaps

Peng Wang, Qiang Zhang

In a paper from 2011, Jiang, Wang and Zhang studied the fixed points and fixed subgroups of selfmaps on a connected finite graph or a connected compact hyperbolic surface $X$ . In p…