2 papers
math.GR2023
Deciding whether a mapping torus is of full rank
Juemin Lin, Jianchun Wu
The mapping torus induced by an automorphism of the free abelian group is a semi-direct product . We show that whether the ran…
math.GR2022
Supersolvable closures of finitely generated subgroups of the free group
Lida Chen, Jianchun Wu
We prove the pro-supersolvable closure of a finitely generated subgroup of the free group is finitely generated. It extends similar results for pro- closures proved by Ribes-Zal…