M. Bucher and N. Monod, The bounded cohomology of SL 2 over local fields and S-integers, 2017.

M. Burger and S. Mozes, Groups acting on trees: from local to global structure, Inst. Hautes Études Sci. Publ. Math, issue.92, pp.113-150, 2000.

J. Peter and . Cameron, Oligomorphic permutation groups, London Mathematical Society Lecture Note Series, vol.152, 1990.

J. W. Cannon, W. J. Floyd, and W. R. Parry, Introductory notes on Richard Thompson's groups, Enseign. Math, issue.2, pp.215-256, 1996.

P. , E. Caprace, and P. Wesolek, Indicability, residual finiteness, and simple subquotients of groups acting on trees, 2017.

J. Janusz and . Charatonik, Monotone mappings of universal dendrites, Topology Appl, vol.38, issue.2, pp.163-187, 1991.

J. W?odzimierz, A. Charatonik, and . Dilks, On self-homeomorphic spaces, Topology Appl, vol.55, issue.3, pp.215-238, 1994.

P. De, L. Harpe, and D. Mcduff, Acyclic groups of automorphisms, Comment. Math. Helv, vol.58, issue.1, pp.48-71, 1983.

B. Duchesne and N. Monod, Group actions on dendrites and curves, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01359816

B. Duchesne and N. Monod, Structural properties of dendrite groups, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01388407

E. G. Effros, Transformation groups and C * -algebras, Ann. of Math, issue.2, pp.38-55, 1965.

S. M. Gersten, Bounded cocycles and combings of groups, Internat. J. Algebra Comput, vol.2, issue.3, pp.307-326, 1992.

É. Ghys, Groupes d'homéomorphismes du cercle et cohomologie bornée, pp.81-106, 1984.

É. Ghys and V. Sergiescu, Sur un groupe remarquable de difféomorphismes du cercle, Comment. Math. Helv, vol.62, issue.2, pp.185-239, 1987.

E. Hrushovski, F. Loeser, and B. Poonen, Berkovich spaces embed in Euclidean spaces, Enseign. Math, vol.60, issue.3-4, pp.273-292, 2014.

A. S. Kechris, Classical descriptive set theory, Graduate Texts in Mathematics, vol.156, 1995.

J. N. Mather, The vanishing of the homology of certain groups of homeomorphisms, Topology, vol.10, pp.297-298, 1971.

S. Matsumoto and S. Morita, Bounded cohomology of certain groups of homeomorphisms, Proc. Amer. Math. Soc, vol.94, issue.3, pp.539-544, 1985.

J. Milnor, Dynamics in one complex variable, vol.160, 2006.

N. Monod, Continuous bounded cohomology of locally compact groups, vol.1758, 2001.

S. Bernard-nadler and J. , Continuum theory, Monographs and Textbooks in Pure and Applied Mathematics, vol.158, 1992.

M. Peter and . Neumann, Generosity and characters of multiply transitive permutation groups, Proc. London Math. Soc, issue.3, pp.457-481, 1975.

P. Sankaran and K. Varadarajan, Acyclicity of certain homeomorphism groups, Canad. J. Math, vol.42, issue.1, pp.80-94, 1990.

G. Segal, Classifying spaces related to foliations, Topology, vol.17, issue.4, pp.367-382, 1978.

S. Thomas and B. Velickovic, On the complexity of the isomorphism relation for finitely generated groups, J. Algebra, vol.217, issue.1, pp.352-373, 1999.

J. B. Wagoner, Delooping classifying spaces in algebraic K-theory, Topology, vol.11, pp.349-370, 1972.

T. Wa?ewski, Ann. Soc. Polon. Math, vol.2, pp.49-170, 1923.

G. T. Whyburn and A. Topology, , vol.28, 1942.

. Institut, C. De-lorraine, N. De-lorraine, and F. , E-mail address: nicolas.monod@epfl.ch DEPARTMENT OF MATHEMATICAL SCIENCES