I am a Marie Curie Fellow at Technical University of Denmark. Previously I was a postdoc at MPIM Bonn and at University of Southampton. I obtained my PhD from University of Copenhagen in 2017. I work in geometric group theory.


email: tompr at dtu.dk
office: Room 115, Building 303B, DTU Lyngby Campus, 2800 Kgs. Lyngby


  1. Hex implies Y 
    submitted (arXiv: 2102.02621).
  2. Cohomological and geometric invariants of simple complexes of groups
    with N. Petrosyan, submitted (arXiv: 2009.02161).
  3. Graphical complexes of groups
    submitted (arXiv: 2004.08187).
  4. Coarse geometry of the fire retaining property and group splittings
    with E. Martinez-Pedroza, submitted (arXiv: 1904.04658).
  5. Commensurators of abelian subgroups in CAT(0) groups
    with J. Huang, accepted to Mathematische Zeitschrift (arXiv: 1812.09035).
  6. Bredon cohomological dimension for virtually abelian stabilisers for CAT(0) groups
    accepted to Journal of Topology and Analysis (arXiv: 1810.08924).
  7. Bestvina complex for group actions with a strict fundamental domain
    with N. Petrosyan, accepted to Groups, Geometry, and Dynamics (arXiv: 1712.07606).
  8. Solvable Subgroup Theorem for simplicial nonpositive curvature
    International Journal of Algebra and Computation 28 (2018), no. 4, 605-611 (arXiv: 1707.07918).
  9. Hyperbolic isometries and boundaries of systolic complexes 
    Journal of the London Mathematical Society, https://doi.org/10.1112/jlms.12184(arXiv:1705.01062).
  10. Classifying spaces for families of subgroups for systolic groups
    D. Osajda, Groups, Geometry, and Dynamics 12 (2018), no. 3, 1005-1060 (arXiv: 1604.08478,  poster).
  11. Infinite systolic groups are not torsion
    MSc thesis, Colloquium Mathematicum 153 (2018), no. 2, 169-194 (arXiv: