Graphical small cancellation and hyperfiniteness of boundary actions, joint with Damian Osajda and Koichi Oyakawa, Journal of the London Mathematical Society, 113(4), 2026.
Hyperfiniteness of boundary actions of relatively hyperbolic groups. Chris Karpinski. Groups, Geom. Dyn., 19(4):1479–1497, 2025.
Weak Tits alternative for uniform lattices in buildings, joint with Damian Osajda and Piotr Przytycki, Journal of Algebra 656, 2024, special volume in memory of Jacques Tits, 259-275.
The conjugacy problem for Dehn twist automorphisms of free products of abelian groups. Joint with Amir Weiss Behar and Bratati Som, in preparation (2026+).
Decent actions of groups, Chris Karpinski. (2026). Submitted to "Annales scientifiques de l'Ecole normale supérieure”.
An Algorithm to Solve the Generalized Conjugacy Problem in Relatively Hyperbolic Groups, Chris Karpinski. (2022).