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I am a post-doctoral researcher at the École Normale Supérieure in Paris with Cyril Houdayer. I obtained my PhD at the Department of Mathematics at KU Leuven under supervision of Stefaan Vaes.
Email: milan[period]donvil[at]ens[period]psl[period]eu
My research is mainly focussed on the study of von Neumann algebras associated to groups, group actions on probability spaces, or more generally groupoids. In particular, I am interested in rigidity phenomena.
In the autumn of 2026, we are organising the Operator algebras: approximation, rigidity, and dynamics trimester program at the IHP. Registration is possible here.
In my free time, I enjoy playing and listening to music (some songs I like).
Photo by Julien Campet
Preprints
Preprints
Kesten's criterion for discrete probability measure-preserving groupoids, with Soham Chakraborty, Felipe Flores, and Mario Klisse. Preprint 2025 - pdf
W*-superrigidity for discrete quantum groups, with Stefaan Vaes. Preprint 2025 - pdf
The Choquet-Deny Property for Groupoids, with Tey Berendschot, Soham Chakraborty, Se-Jin Kim, and Mario Klisse. Preprint 2024 - pdf
Upcomming talks
Upcomming talks
March 25, 2026 - TBA - Seminar talk in the GOA seminar in Copenhagen
March 26, 2026 - TBA - Seminar talk in the Operator Algebra Research Seminar in Gothenburg
April 28, 2026 - TBA - Seminar talk in the Function Analysis seminar at ICJ, Lyon
May 2026 - TBA - invited talk at the Harmonic Analysis and von Neumann algebras workshop at ICMAT, Madrid
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