Greenberg's Theorem for Quasiconvex Subgroups of Word Hyperbolic Groups
Canadian journal of mathematics, Tome 48 (1996) no. 6, pp. 1224-1244

Voir la notice de l'article provenant de la source Cambridge University Press

Analogues of a theorem of Greenberg about finitely generated subgroups of free groups are proved for quasiconvex subgroups of word hyperbolic groups. It is shown that a quasiconvex subgroup of a word hyperbolic group is a finite index subgroup of only finitely many other subgroups.
DOI : 10.4153/CJM-1996-065-6
Mots-clés : 20F32, 57M, word hyperbolic group, boundary, quasiconvex
Kapovich, Ilya; Short, Hamish. Greenberg's Theorem for Quasiconvex Subgroups of Word Hyperbolic Groups. Canadian journal of mathematics, Tome 48 (1996) no. 6, pp. 1224-1244. doi: 10.4153/CJM-1996-065-6
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