-essential subgroups of abelian groups. II.
Jindřich Bečvář (1976)
Commentationes Mathematicae Universitatis Carolinae
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Displaying similar documents to “-complementary generations of the Harada-Norton group ”
-essential subgroups of abelian groups. II.
On groups with many nearly maximal subgroups
Silvana Franciosi, Francesco de Giovanni (1998)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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A subgroup of a group is nearly maximal if the index is infinite but every subgroup of properly containing has finite index, and the group is called nearly if all its subgroups of infinite index are intersections of nearly maximal subgroups. It is proved that an infinite (generalized) soluble group is nearly if and only if it is either cyclic or dihedral.
On some questions concerning permutable subgroups of finitely generated groups and projectivities of perfect groups
Giorgio Busetto, Franco Napolitani (1992)
Rendiconti del Seminario Matematico della Università di Padova
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On minimal logarithmic signatures of finite groups.
Lempken, Wolfgang, van Trung, Tran (2005)
Experimental Mathematics
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A note on supersoluble maximal subgroup and theta-pairs.
James C. Beidleman, Howard Smith (1993)
Publicacions Matemàtiques
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A θ-pair for a maximal subgroup M of a group G is a pair (A, B) of subgroups such that B is a maximal G-invariant subgroup of A with B but not A contained in M. θ-pairs are considered here in some groups having supersoluble maximal subgroups.