Groups with all subgroups either modular or soluble of finite rank
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DOI: 10.1016/j.jalgebra.2020.12.005
Abstract: Abstract We study locally graded groups whose non-modular subgroups are soluble and satisfy some rank condition. In particular, in order to characterize locally graded groups whose subgroups are either modular or polycyclic, we describe (generalized)… read more here.
Keywords: modular soluble; groups subgroups; subgroups either; groups whose ... See more keywords
Finite Groups with Some Subgroups of Sylow Subgroups s∗-Semipermutable
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DOI: 10.1556/012.2021.58.2.1490
Abstract: We introduce a new subgroup embedding property in a finite group called s∗-semipermutability. Suppose that G is a finite group and H is a subgroup of G. H is said to be s∗-semipermutable in G… read more here.
Keywords: finite groups; subgroup; sylow subgroups; subgroups sylow ... See more keywords
New species of the genus Chimarra Stephens from Africa (Trichoptera, Philopotamidae) and characterization of the African groups and subgroups of the genus
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DOI: 10.3897/zookeys.1111.77586
Abstract: Abstract This paper is primarily based on collections in Tanzania and Ghana in 1990–1991 and 1991–1994, respectively. In all, 46 species of Chimarra were collected, 31 of them new species. All these species are illustrated… read more here.
Keywords: groups subgroups; georgensis group; group; new species ... See more keywords