Projectivity conjecture for finitely generated pro- subgroups
Let be a torsion-free hyperbolic virtually compact special group, let be its profinite completion, and let be a finitely generated pro- subgroup of , where does not contain all finite groups.
Projectivity conjecture. is projective.
This proposes projectivity for finitely generated pro- subgroups arising in profinite completions of torsion-free hyperbolic virtually compact special groups. The supplied text does not state whether the conjecture is known or remains open.
References
Primary source
Lucas C. Lopes and Pavel A. Zalesskii, “Pro-C groups acting on profinite trees”, arXiv:2607.23875 (2026).
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