Abstract
Let \(\sigma =\{\sigma _{i} | i\in I\}\) be a partition of the set \(\mathbb {P}\) of all primes and G a finite group. A chief factor H / K of G is said to be \(\sigma \)-central (in G) if the semidirect product \((H/K) \rtimes (G/C_{G}(H/K))\) is a \(\sigma _{i}\)-group for some \(i=i(H/K)\); otherwise, it is called \(\sigma \)-eccentric. We say that G is: \(\sigma \)-nilpotent if every chief factor of G is \(\sigma \)-central; \(\sigma \)-quasinilpotent if for every \(\sigma \)-eccentric chief factor H / K of G, every automorphism of H / K induced by an element of G is inner. In this paper, we study properties of \(\sigma \)-nilpotent and \(\sigma \)-quasinilpotent subgroups of finite groups.
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The authors are deeply grateful to the helpful suggestions of the referees.
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Communicated by Kar ** Shum.
Research is supported by an NNSF Grant of China (Grant No. 11401264) and a TAPP of Jiangsu Higher Education Institutions (PPZY 2015A013).
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Hu, B., Huang, J. & Skiba, A.N. Characterizations of Finite \(\sigma \)-Nilpotent and \(\sigma \)-Quasinilpotent Groups. Bull. Malays. Math. Sci. Soc. 42, 2091–2104 (2019). https://doi.org/10.1007/s40840-017-0593-6
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DOI: https://doi.org/10.1007/s40840-017-0593-6
Keywords
- Finite group
- \(\sigma \)-Central chief factor
- \({\sigma }\)-Nilpotent group
- \({\sigma }\)-Quasinilpotent group
- \({\sigma }\)-Hypercenter