We study graphics small cancellation groups to demonstrate hyperfinite boundary actions on Gromov boundaries, suggesting interesting implications for group theory.
We study actions of (infinitely presented) graphical small cancellation groups on the Gromov boundaries of their coned‐off Cayley graphs. We show that a class of graphical small cancellation groups, including (infinitely presented) classical small cancellation groups, admit hyperfinite boundary actions, more precisely, the orbit equivalence relation that they induce on the boundaries of the coned‐off Cayley graphs is hyperfinite.
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Karpinski et al. (2026) studied this question.
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