Results 181 to 190 of about 2,137 (216)

Finite groups with subnormal Schmidt subgroups

Algebra and Logic, 2007
Summary: We give a complete description of the structure of finite non-nilpotent groups all Schmidt subgroups of which are subnormal.
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Direct Products and Defects of Subnormal Subgroups

Journal of the London Mathematical Society, 1988
For any positive integer n, \({\mathfrak X}_ n\) denotes the class of groups G such that \([G,_ nH]=[G,_{n+1}H]\) for every subnormal subgroup H of G. Using Roseblade's Theorem on groups in which every subgroup is subnormal of bounded defect, it is shown that \(G\in {\mathfrak X}_ n\) if and only if \(G\times G\in {\mathfrak B}_ n\) (\({\mathfrak B}_ n\
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Permutability of subgroups and $$\mathfrak{F}$$ -subnormality

Siberian Mathematical Journal, 1996
General properties of formations inducing the WK-operator are studied. A subgroup \(H\) of a group \(G\) is called \({\mathfrak F}\)-composition subgroup (\({\mathfrak F}\) is a non-empty formation of finite groups), if there is a chain of subgroups \(G= H_0\geq H_1\geq\cdots\geq H_m=H\) such that, for every \(i\in\{1,2,\dots,m\}\), either \(H_i\) is ...
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Characters of subnormal subgroups ofM-groups

Archiv der Mathematik, 1984
By definition, a finite group G is called an M-group if each of its irreducible complex characters is induced from a linear character of a subgroup of G. In this paper several theorems are proved. The most important are Theorem 1: Let G be an M-group and let S be a subnormal subgroup of odd index in G.
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The Join of Two Subnormal Subgroups

Journal of the London Mathematical Society, 1980
Lennox, John C., Stonehewer, Stewart E.
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Groups with few non-subnormal subgroups.

2004
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DE FALCO, MARIA, MUSELLA, CARMELA
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Groups with every Subgroup Subnormal

Bulletin of the London Mathematical Society, 1983
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Finite groups in which every subgroup is a subnormal subgroup or a TI-subgroup

Archiv Der Mathematik, 2013
Jiangtao Shi
exaly  

A Note on Disjoint Subnormal Subgroups

Bulletin of the London Mathematical Society, 1969
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Groups in which every finite subnormal subgroup is normal

Ricerche Di Matematica, 2015
Francesco De Giovanni, De Giovanni Francesco   +1 more
exaly