Semiprimitive local action finiteness conjecture for tree groups
Semiprimitive local action finiteness conjecture for tree groups
Let be the -regular tree, let be a finite set, and let be semiprimitive, meaning that every normal subgroup of is either transitive or semiregular on . Consider discrete subgroups of which locally act like and contain an involutive inversion. Semiprimitive local action finiteness conjecture. There are only finitely many conjugacy classes of such subgroups. The conjecture is presented as the converse to a necessary condition proved by Potočnik, Spiga, and Verret; the source mentions partial results but gives no resolution of this strengthened formulation.
Sources & referencesView supporting material
Primary source
Stephan Tornier, “Groups Acting on Trees With Prescribed Local Action”, arXiv:2002.09876 (2021).
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