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About me
I am a postdoctoral fellow at the Department of Mathematical Sciences of Chalmers University of Technology and the University of Gothenburg.
Before that, I was a PhD student in mathematics at the University of Münster, under the supervision of David Kerr.
My research interests include topological dynamics and their interaction with operator algebras, as well as measurable dynamics, entropy, and orbit equivalence.
If you meet me, please call me Spyros (or Don)!
CV (updated 2025-10-01)
Publications
McDuff factors from amenable actions and dynamical alternating groups with D. Kerr
Groups Geom. Dyn. 19(2) (2025), 415–429; arXivAlmost finiteness and groups of dynamical origin with P. Naryshkin
Int. Math. Res. Not. IMRN 2025(3) (2025), rnaf016; arXivBauer simplices and the small boundary property with D. Kerr and G. Kopsacheilis
J. Funct. Anal. 287(11) (2024), 110619; arXivSeminars
I am currently (co-)organizing two seminars.
Upcoming events
19th Panhellenic Conference on Mathematical Analysis
18–20 Dec 2025. National Technical University of Athens, Athens, Greece.
Simons Semester "Invariant Structures in Groups, Spaces, and Algebras"
12 Jan – 15 Feb 2026. IMPAN, Warsaw, Poland.
Groups and Dynamics: Topology, Measure, and Borel Structure
12–17 April 2026. MFO, Oberwolfach, Germany.
Contact
address:
Department of Mathematical Sciences
Chalmers University of Technology and University of Gothenburg
Chalmers Tvärgata 3, SE-412 96 Göteborg, Sweden
room MV:L-3100
email:
petrakos [at] chalmers [dot] se
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