3 papers
math.LO2018
Isometry group of Borel randomizations
Alexander Berenstein, Rafael Zamora
We study global dynamical properties of the isometry group of the Borel randomization of a separable complete structure. In particular, we show that if properties such as the Rohkl…
math.LO2017
A fixed-point theorem for definably amenable groups
Juan Felipe Carmona, Kevin Dávila, Alf Onshuus +1
We prove an analogue of the fixed-point theorem for the case of definably amenable groups.
math.LO2015
Injective tests of low complexity in the plane
Dominique Lecomte, Rafael Zamora
We study injective versions of the characterization of sets potentially in a Wadge class of Borel sets, for the first Borel and Lavrentieff classes. We also study the case of orien…