Abstract
For a finite group G, a vanishing element of G is an element g ∈ G such that χ(g) = 0 for some irreducible complex character χ of G. Denote by πe(G) the set of orders of elements in G and by Vo(G) the set of the orders of vanishing elements of G. A group M is said to be recognizable if every finite group N with πe(M) = πe(N) is isomorphic to M, and V-recognizable if every finite group N with Vo(M) = Vo(N) is isomorphic to M. This paper investigates the relationship between recognizable and V-recognizable groups. As an application, we show that G ≅ M22 if and only if Vo(G) = Vo(M22). Hence we give a partial positive answer to [arXiv:1401.0300v12, Problem 19.30].
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Acknowledgements
The authors would like to thank the referee for many valuable suggestions and useful comments. The work is supported in part by NSFC (Nos. 11301532, 11771356).
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Shen, Z., Zhang, B., Zhang, J. et al. A New Characterization of Sporadic Simple Group M22 via Its Vanishing Elements. Front. Math 19, 551–558 (2024). https://doi.org/10.1007/s11464-021-0500-1
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DOI: https://doi.org/10.1007/s11464-021-0500-1