Gilbert Levitt
University of Caen Lower Normandy
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Publication
Featured researches published by Gilbert Levitt.
Geometry & Topology | 2007
Gilbert Levitt
A generalized Baumslag-Solitar group (GBS group) is a finitely generated group
Groups, Geometry, and Dynamics | 2007
Vincent Guirardel; Gilbert Levitt
G
Geometry & Topology | 2011
Vincent Guirardel; Gilbert Levitt
which acts on a tree with all edge and vertex stabilizers infinite cyclic. We show that Out(G) either contains non-abelian free groups or is virtually nilpotent of class at most 2. It has torsion only at finitely many primes. One may decide algorithmically whether Out(G) is virtually nilpotent or not. If it is, one may decide whether it is virtually abelian, or finitely generated. The isomorphism problem is solvable among GBS groups with Out(G) virtually nilpotent. If
Transactions of the American Mathematical Society | 2006
Ilya Kapovich; Gilbert Levitt; Paul E. Schupp; Vladimir Shpilrain
G
Groups, Geometry, and Dynamics | 2015
Vincent Guirardel; Gilbert Levitt
is unimodular (virtually
Archive | 2007
Vincent Guirardel; Gilbert Levitt
F_n \times Z
Geometry & Topology | 2014
Gilbert Levitt; Ashot Minasyan
), then Out(G) is commensurable with a semi-direct product
arXiv: Group Theory | 2012
Gilbert Levitt; V. Metaftsis
Z^k \rtimes Out(H)
Proceedings of the 9th International Conference on Combinatorics on Words - Volume 8079 | 2013
Gilbert Levitt
with
arXiv: Group Theory | 2007
Vincent Guirardel; Gilbert Levitt
H
