Results 81 to 90 of about 266 (183)

Fixed‐point posets of groups and Euler characteristics

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 3, March 2026.
Abstract Suppose that G$G$ is a group and Ω$\Omega$ is a G$G$‐set. For X$\mathcal {X}$ a set of subgroups of G$G$, we introduce the fixed‐point poset XΩ$\mathcal {X}_{\Omega }$. A variety of results concerning XΩ$\mathcal {X}_{\Omega }$ are proved as, for example, in the case when p$p$ is a prime and X$\mathcal {X}$ is a non‐empty set of finite non ...
Peter Rowley
wiley   +1 more source

Finite non-solvable groups with few sum of numbers of Sylow subgroups [PDF]

open access: yesEuropean Journal of Mathematics and Applications
Let $G$ be a finite group and $n_p(G)$ be the number of Sylow $p$-subgroups of $G$. Let $S(G)=\{p\in \pi(G) \colon n_p(G)>1 \}$ and define $\delta_0(G)=\sum_{p \in S(G)}n_p(G)$. Denote by $Sol(G)$ the solvable radical.
Tingting Li
doaj   +1 more source

On recognition of simple group L2(r) by the number of Sylow subgroups

open access: yesActa Scientiarum: Technology, 2014
Let G be a finite group and n_{p}(G) be the number of Sylow p- subgroup of G. In this work it is proved if G is a centerless group and n_{p}(G)=n_{p}(L_{2}(r)), for every prime p in pi (G), where r is prime number, r^2 does not divide |G| and r is not ...
Alireza Khalili Asboei   +1 more
doaj   +1 more source

On Periodic Groups and Shunkov Groups that are Saturated by Dihedral Groups and $A_5$

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2017
A group is said to be periodic, if any of its elements is of finite order. A Shunkov group is a group in which any pair of conjugate elements generates Finite subgroup with preservation of this property when passing to factor groups by finite Subgroups ...
A. Shlepkin
doaj   +1 more source

GRUPOS DE PERMUTAÇÕES E GRUPOS FINITOS SIMPLES

open access: yesColloquium Exactarum, 2011
The normality of subgroups in a finite group has a property discovered by E. Galois in 1832, study-group of permutations of roots of polynomial equations.
Lauro Maycon Fernandes Ferreira   +2 more
doaj   +1 more source

Strongly Base-Two Groups. [PDF]

open access: yesVietnam J Math, 2023
Burness TC, Guralnick RM.
europepmc   +1 more source

On second maximal subgroups of Sylow subgroups of finite groups

open access: yesJournal of Pure and Applied Algebra, 2011
Given a group \(G\), a subgroup \(K\) is called a second maximal subgroup if there exists a maximal subgroup \(M\) of \(G\) such that \(K\) is a maximal subgroup of \(M\). Several authors have studied the influence of the embedding of second maximal subgroups on the structure of a group.
Ballester-Bolinches, A.   +2 more
openaire   +2 more sources

On F^ω-projectors and F^ω-covering subgroups of finite groups [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
Only finite groups are considered. $\frak F$-projectors and $\frak F$-covering subgroups, where $\frak F$ is a certain class of groups, were introduced into consideration by W.~Gaschutz as a natural generalization of Sylow and Hall subgroups in finite ...
Sorokina, Marina M., Novikova, Diana G.
doaj   +1 more source

Finite groups with certain subgroups of Sylow subgroups complemented

open access: yesJournal of Algebra, 2010
Let \(\mathcal I\) be a saturated formation containing the class of supersoluble groups, \(G\) be a finite group with a normal subgroup \(E\) such that \(G/E\in\mathcal I\), and \(F^*(E)\) the generalised Fitting subgroup of \(E\). Theorem 1.3: If \(P\) is a Sylow subgroup of \(E\) and \(P\) has a proper subgroup \(D\) such that each subgroup \(H\) of \
openaire   +2 more sources

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