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This article is cited in 1 scientific paper (total in 1 paper)
Complementing a subgroup of a hyperbolic group by a free factor
F. A. Dudkinab, K. S. Sviridovc a Sobolev Institute of Mathematics, pr. Akad. Koptyuga 4, Novosibirsk, 630090, Russia
b Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia
c Morskoi pr. 29-9, Novosibirsk, 630090, Russia
Abstract:
Let $G$ be a hyperbolic group that is not almost cyclic and $H$ be its quasiconvex subgroup of infinite index. We find necessary and sufficient conditions of there being for $H$ a free subgroup $F$ of rank 2 in $G$ such that $F$ and $H$ generate a free product $F*H\subseteq G$. It is proved that $F*H$ is quasiconvex and that there exists an algorithm for verifying the conditions of the criterium given $G$ and $H$.
Keywords:
hyperbolic group, quasiconvex subgroup, free product.
Received: 03.02.2012 Revised: 13.03.2013
Citation:
F. A. Dudkin, K. S. Sviridov, “Complementing a subgroup of a hyperbolic group by a free factor”, Algebra Logika, 52:3 (2013), 332–351; Algebra and Logic, 52:3 (2013), 222–235
Linking options:
https://www.mathnet.ru/eng/al590 https://www.mathnet.ru/eng/al/v52/i3/p332
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Abstract page: | 224 | Full-text PDF : | 85 | References: | 61 | First page: | 17 |
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