2 citations · 2 across the 3 of their papers we have counts for
3 papers
math.GR2009★ 2 cited
The twisted conjugacy problem for pairs of endomorphisms in nilpotent groups
V. Roman'kov, E. Ventura
An algorithm is constructed that, when given an explicit presentation of a finitely generated nilpotent group decides for any pair of endomorphisms and any pai…
math.GR2009
Computing fixed closures in free groups
Enric Ventura
Let be a finitely generated free group. We present an algorithm such that, given a subgroup , decides whether is the fixed subgroup of some family of automorp…
math.GR2003
A description of auto-fixed subgroups in a free group
A. Martino, E. Ventura
Let be a finitely generated free group. By using Bestvina-Handel theory, as well as some further improvements, the eigengroups of a given automorphism of (and its fixed sub…