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Bin Ahmad, Abd Ghafur, Al-Mulla, Muna A. and Edjvet, Martin (2016) Asphericity of a length four relative presentation. Journal of Algebra and its Applications, 16 (04). p. 1750076. ISSN 1793-6829

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Abstract

We consider the relative group presentation P = < G, X | R > where X = { x \} and R = { xg_1 xg_2 xg_3 x^{-1} g_4 }. We show modulo a small number of exceptional cases exactly when P is aspherical. If the subgroup H of G is given by H = < g_1^{-1} g_2, g_1^{-1} g_3 g_1 , g_4 > then the exceptional cases occur when H is isomorphic to one of C_5,C_6,C_8 or C_2 X C_4.

Item Type:	Article
RIS ID:	https://nottingham-repository.worktribe.com/output/790046
Additional Information:	Electronic version of an article published as Journal of Algebra and its Applications, 16, 04, 2016, 1750076 (27 p.), doi:10.1142/S0219498817500761 © World Scientific Publishing Company, http://www.worldscientific.com/worldscinet/jaa
Keywords:	relative group presentation; asphericity
Schools/Departments:	University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number:	10.1142/S0219498817500761
Depositing User:	Edjvet, Martin
Date Deposited:	05 Apr 2016 09:31
Last Modified:	04 May 2020 17:51
URI:	https://eprints.nottingham.ac.uk/id/eprint/32633

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