Abstract
Let \( \pi \) be a set of primes. A group \( G \) is weakly \( \pi \)-potent if \( G \) is residually finite and, for each element \( x \) of infinite order in \( G \), there is a positive integer \( m \) such that, for every positive \( \pi \)-integer \( n \), there exists a homomorphism of \( G \) onto a finite group which sends \( x \) to an element of order \( mn \). We obtain a few results about weak \( \pi \)-potency for some groups and generalized free products.
Similar content being viewed by others
References
Stebe P., “Conjugacy separability of certain free products with amalgamation,” Trans. Amer. Math. Soc., vol. 156, 119–129 (1971).
Allenby R. B. J. T., “The potency of cyclically pinched one-relator groups,” Arch. Math., vol. 36, no. 1, 204–210 (1981).
Hartley B., Lennox J. C., and Rhemtulla A. H., “Cyclically separated groups,” Bull. Aust. Math. Soc., vol. 26, 355–384 (1982).
Wong P. C., Tang C. K., and Gan H. W., “Weak potency of fundamental groups of graphs of groups,” Bull. Malays. Math. Sci. Soc., vol. 33, no. 2, 243–251 (2010).
Hirsh K. A., “On infinite soluble groups,” J. Lond. Math. Soc., vol. 27, 81–85 (1952).
Tang C. Y., “Conjugacy separability of generalized free products of certain conjugacy separable groups,” Canad. Math. Bull., vol. 38, no. 1, 120–127 (1995).
Lennox J. and Robinson D., The Theory of Infinite Soluble Groups, Clarendon, Oxford (2004).
Lubotzky A. and Mann A., “Residually finite groups of finite rank,” Math. Proc. Cambridge Philos. Soc., vol. 106, 185–188 (1989).
Azarov D. N., “On the residual finiteness of free products of solvable minimax groups with cyclic amalgamated subgroups,” Math. Notes, vol. 93, no. 4, 503–509 (2013).
Azarov D. N., “Approximability of generalized free products of groups with amalgamated normal subgroup by some classes of finite groups,” Sib. Math. J., vol. 56, no. 2, 206–216 (2015).
Baumslag G., “On the residual finiteness of generalized free products of nilpotent groups,” Trans. Amer. Math. Soc., vol. 106, no. 2, 193–209 (1963).
Azarov D. N., “On the residual finiteness of the HNN-extensions and generalized free products of finite rank groups,” Sib. Math. J., vol. 54, no. 6, 959–967 (2013).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Azarov, D.N. On the Weak \( \pi \)-Potency of Some Groups and Free Products. Sib Math J 61, 953–962 (2020). https://doi.org/10.1134/S0037446620060014
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0037446620060014