Abstract
Let \(\pi\) be a set of primes. A subgroup \(H\) of a group \(G\) is said to be \(\mathbb{P}_{\pi}\)-subnormal in \(G\) if either \(H=G\) or there exists a chain of subgroups beginning with \(H\) and ending with \(G\) such that the index of each subgroup in the chain is either a prime in \(\pi\) or a \(\pi'\)-number. Properties of \(\mathbb{P}_{\pi}\)-subnormal subgroups are studied. In particular, it is proved that the class of all \(\pi\)-closed groups in which all Sylow subgroups are \(\mathbb{P}_{\pi}\)-subnormal is a hereditary saturated formation. Criteria for the \(\pi\)-supersolvability of a \(\pi\)-closed group with given systems of \(\mathbb{P}_{\pi}\)-subnormal subgroups are obtained.
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Translated from Matematicheskie Zametki, 2023, Vol. 114, pp. 483–496 https://doi.org/10.4213/mzm13973.
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Vasil’eva, T.I., Koranchuk, A.G. On Finite Groups with \(\mathbb{P}_{\pi}\)-Subnormal Subgroups. Math Notes 114, 421–432 (2023). https://doi.org/10.1134/S0001434623090158
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DOI: https://doi.org/10.1134/S0001434623090158