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Recognition of 2-dimensional projective linear groups by the group order and the set of numbers of its elements of each order

  • Alireza Khalili Asboei ORCID logo EMAIL logo

Abstract

In a finite group G, let πe(G) be the set of orders of elements of G, let sk denote the number of elements of order k in G, for each kπe(G), and then let nse(G) be the unordered set {sk:kπe(G)}. In this paper, it is shown that if |G|=|L2(q)| and nse(G)=nse(L2(q)) for some prime-power q, then G is isomorphic to L2(q).

MSC 2010: 20D20; 20D60

Acknowledgements

The author would like to thank the referees for their careful reading and useful suggestions which led us to improve the paper.

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Received: 2018-06-30
Published Online: 2018-10-11
Published in Print: 2018-11-01

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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