Abstract
Let H be a π-subgroup of G, and assume that HQ = QH for every Sylow q-subgroup Q of G for all primes q not dividing |H|. We show that the normal closure H G of H in G has a nilpotent π-complement, and in the case where π consists of just one prime, H G is solvable.
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Isaacs, I.M. Semipermutable π-subgroups. Arch. Math. 102, 1–6 (2014). https://doi.org/10.1007/s00013-013-0604-2
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DOI: https://doi.org/10.1007/s00013-013-0604-2