Abstract
It is proved that every finite group isospectral to an alternating group A n of degree n greater than 21 has a chief factor isomorphic to an alternating group A k , where k ≤ n and the half-interval (k, n] contains no primes.
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Original Russian Text © I.A. Vakula, 2010, published in Trudy Instituta Matematiki i Mekhaniki UrO RAN, 2010, Vol. 16, No. 3.
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Vakula, I.A. On the structure of finite groups isospectral to an alternating group. Proc. Steklov Inst. Math. 272 (Suppl 1), 271–286 (2011). https://doi.org/10.1134/S0081543811020192
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DOI: https://doi.org/10.1134/S0081543811020192