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 Sib. Èlektron. Mat. Izv., 2017, Volume 14, Pages 937–945 (Mi semr836)

Mathematical logic, algebra and number theory

On groups which are not finitely defined in every quasivariety of groups

A. I. Budkin

Altai State University, pr. Lenina, 61, 656049, Barnaul, Russia

Abstract: We continue to study quasivarieties of groups closed under direct Z-wreath products. We show that such quasivarieties contain finitely generated groups which are not finitely defined in every quasivariety of groups. We establish the existence of continuum many finitely generated groups every of which is not finitely defined in each quasivariety of groups. We construct the group which is finitely defined in the class of all torsion-free groups and is not finitely defined in the class of all groups.

Keywords: group, finitely defined group, quasivariety, wreath product.

DOI: https://doi.org/10.17377/semi.2017.14.079

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UDC: 512.5
MSC: 20E10
Received June 6, 2017, published September 15, 2017

Citation: A. I. Budkin, “On groups which are not finitely defined in every quasivariety of groups”, Sib. Èlektron. Mat. Izv., 14 (2017), 937–945

Citation in format AMSBIB
\Bibitem{Bud17} \by A.~I.~Budkin \paper On groups which are not finitely defined in every quasivariety of groups \jour Sib. \Elektron. Mat. Izv. \yr 2017 \vol 14 \pages 937--945 \mathnet{http://mi.mathnet.ru/semr836} \crossref{https://doi.org/10.17377/semi.2017.14.079} `