Results 21 to 30 of about 243,406 (213)

A note on locally soluble almost subnormal subgroups in divsion rings [PDF]

International Journal of Group Theory, 2021
Let $D$ be a division ring with center $F$ and assume that $N$ is a locally soluble almost subnormal subgroup of the multiplicative group $D^*$ of $D$‎. ‎We prove that if $N$ is algebraic over $F$‎, ‎then $N$ is central‎.
Truong Huu Dung
doaj   +1 more source

On Groups whose Subnormal Abelian Subgroups are Normal [PDF]

Advances in Group Theory and Applications, 2022
In the current paper we study the groups, whose subnormal abelian subgroups are normal. We obtained a quite detailed description of such hyperabelian groups with a periodic Baer radical.
L.A. Kurdachenko, J. Otal, I.Ya. Subbotin   +2 more
doaj   +1 more source

Finite Groups with $H_σ$-Permutably Embedded Subgroups [PDF]

Advances in Group Theory and Applications, 2017
Let $G$ be a finite group. Let $\sigma=\{\sigma_i|i\inI\}$ be a partition of the set of all primes $P$ and $n$ an integer. We write $\sigma(n) = \{\sigma_i|\sigma_i\cap \pi(n)\neq\emptyset\}$, $\sigma(G) = \sigma(|G|)$.
Darya A. Sinitsa
doaj   +1 more source

TORSION MAXIMAL SUBGROUPS OF GLn(D) [PDF]

Journal of Algebraic Systems
Let D be a division ring over its center F. LetGLn(D)be the general linear group over D. In this article we prove thatifGLn(D)contains a maximal torsion subgroup M then D = F,FpcharF = p > 0 and F is algebraic over its prime subeldwhen-ever one of the ...
Reza Fallah-Moghaddam
doaj   +1 more source

Outcome Based Subgroup Analysis: A Neglected Concern. [PDF]

, 2009
A subgroup of clinical trial subjects identified by baseline characteristics is a proper subgroup while a subgroup determined by post randomization events or measures is an improper subgroup.
Fagerland, Morten W, Hirji, K.F, Fagerland, M.W., Hirji, Karim F, Fagerland Morten W, Hirji Karim F, Fagerland, M.W, Hirji, K.F.   +7 more
core   +1 more source

Finite groups with weakly subnormal and partially subnormal subgroups

Sibirskii matematicheskii zhurnal, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huang, J., Hu, B., Skiba, A. N.
openaire   +1 more source

Finite groups with given systems of generalised σ-permutable subgroups

Журнал Белорусского государственного университета: Математика, информатика, 2021
Let σ = {σi|i ∈ I } be a partition of the set of all primes ℙ and G be a finite group. A set ℋ  of subgroups of G is said to be a complete Hall σ-set of G if every member ≠1 of ℋ  is a Hall σi-subgroup of G for some i ∈ I and ℋ contains exactly one Hall ...
Viktoria S. Zakrevskaya
doaj   +1 more source

A fibering theorem for 3-manifolds [PDF]

Groups, Complexity, Cryptology, 2021
We generalize a result of Moon on the fibering of certain 3-manifolds over the circle. Our main theorem is the following: Let $M$ be a closed 3-manifold.
Jordan A. Sahattchieve
doaj   +1 more source

Permutable subnormal subgroups of finite groups [PDF]

, 2016
The aim of this paper is to prove certain characterization theorems for groups in which permutability is a transitive relation, the so called PT -groups.
Cossey, Peter (John), Esteban-Romero, R, Ragland, M F, Schmidt, Jack, Ballester-Bolinches, Adolfo, Beidleman, J C   +5 more
core   +2 more sources

On numbers which are orders of nilpotent groups with bounded class [PDF]

International Journal of Group Theory
Let $n$ be a positive integer. In this short note, we characterize those numbers $m$ for which any group of order $m$ is an $n$-Engel group and those numbers $m$ for which any group of order $m$ has all its subgroups subnormal of defect at most $n$.
Maria Ferrara
doaj   +1 more source