arXiv:1408.5805v2 [math.GR] 4 Oct 2016 Page 1 arXiv:1408.5805v2 [math.GR] 4 Oct 2016
GROUPS, ORDERS, AND DYNAMICS Bertrand Deroin CNRS andÉcole Normale Supérieure …

It is an old and natural idea to try to distinguish finitely presented groups via their finite
quotients, and recently, there has been renewed interest, especially in the light of recent …

Let C (Γ) be the set of isomorphism classes of the finite groups that are quotients
(homomorphic images) of Γ. We investigate the extent to which C (Γ) determines Γ when Γ is …

We introduce and study an open set of PSL 2 (ℂ) characters of a nonabelian free group, on
which the action of the outer automorphism group is properly discontinuous, and which is …

It was shown in [9] that there exist strongly dense free subgroups in any semisimple
algebraic group over a large enough field. These are nonabelian free subgroups all of …

We introduce the notion of tight homomorphism into a locally compact group with
nonvanishing bounded cohomology and study these homomorphisms in detail when the …

Abstract For G and H 1,…, H n finite groups, does there exist a 3-manifold group with G as a
quotient but no H i as a quotient? We answer all such questions in terms of the group …

In this partly expository monograph, we develop a general framework for producing
uncountable families of exotic actions of certain classically studied groups acting on the …

We develop a method to show that some (abstract) groups can be embedded into a free pro-
p group. In particular, we show that a finitely generated subgroup of a free Q-group can be …

According to Thurston's stability theorem, every group of C 1 diffeomorphisms of the closed
interval is locally indicable (that is, every finitely generated subgroup factors through ℤ). We …