activity
20052026
most citedGeneric representations of abelian groups and extreme amenability

39 citations · 104 across the 23 of their papers we have counts for

collaborators

28 papers

math.LO2026

Some aspects of topological dynamics of Polish groups (with an introduction to descriptive set theory)

Julien Melleray

The first part of these notes give an introduction to the theory of Polish group actions on compact Hausdorff spaces, leading up to a proof of the Kechris-Pestov-Todorcevic corresp…

math.DS2025

Dense and comeager conjugacy classes in zero-dimensional dynamics

Michal Doucha, Julien Melleray, Todor Tsankov

Given a countable group , we initiate a systematic study of the Polish spaces of all minimal and topologically transitive actions of on the Cantor space by homeomorphisms, w…

math.DS2022

Clopen type semigroups of actions on -dimensional compact spaces

Julien Melleray

We investigate some properties of the clopen type semigroup of an action of a countable group on a compact, -dimensional, Hausdorff space X. We discuss some characterizations of…

math.GN2022

A topometric Effros theorem

Itaï Ben Yaacov, Julien Melleray

Given a continuous and isometric action of a Polish group on an adequate Polish topometric space and , we find a necessary and sufficient condition for $\ove…

math.DS2021★ 1 cited

From invariant measures to orbit equivalence, via locally finite groups

Julien Melleray, Simon Robert

We give a new proof of a theorem of Giordano, Putnam and Skau characterizing orbit equivalence of minimal homeomorphisms of the Cantor space in terms of their sets of invariant Bor…

math.DS2021★ 1 cited

Generic properties of homeomorphisms preserving a given dynamical simplex

Julien Melleray

Given a dynamical simplex on a Cantor space , we consider the set of all homeomorphisms of which preserve all elements of and have no nontrivial clopen invar…