Results 71 to 80 of about 234 (126)

Construction of central units in integral group rings of finite groups

open access: yes, 2011
In this paper we give new constructions of central units that generate a subgroup of finite index in the central units of the integral group ring Z G \mathbb {Z} G of a finite group.
Eric Jespers, M. Parmenter
core   +1 more source

Minimal non-nilpotent groups which are supersolvable

open access: yes, 2009
The structure of a group which is not nilpotent but all of whose proper subgroups are nilpotent has interested the researches of several authors both in the finite case and in the infinite case. The present paper generalizes some classic descriptions of M. Newman, H. Smith and J. Wiegold in the context of supersolvable groups.
openaire   +3 more sources

Approximate groups and doubling metrics

open access: yes, 2011
We develop a version of Freĭman's theorem for a class of non-abelian groups, which includes finite nilpotent, supersolvable and solvable A-groups. To do this we have to replace the small doubling hypothesis with a stronger relative polynomial growth ...
TOM SANDERS
core   +1 more source

A contribution to the theory of finite supersolvable groups

open access: yesJournal of Algebra, 1979
The relationship between nilpotence of finite groups and the normality of (i) all maximal subgroups or (ii) all Sylow subgroups, is well known. Using Sylow systems of a subgroup, the author defines concepts of weak normaliser and weak centraliser and uses these to describe properties of supersolvable groups. For example, previous results of the author [
openaire   +2 more sources

Character Correspondences and Subgroups of Operator Groups

open access: yes, 1998
LetAandGbe finite groups with coprime orders, and suppose thatAacts onGby automorphisms. Let π(G,A):IrrA(G)→Irr(CG(A)) be the Glauberman–Isaacs correspondence. LetB≤Aand let χ∈IrrA(G).
Puin, Christopher
core   +1 more source

On chief factors of finite groups

open access: yes, 2007
Let H and K be normal subgroups of a finite group G and let K≤H. If A is a subgroup of G such that AH=AK or A∩H=A∩K, we say that A covers or avoids H/K respectively. The purpose of this paper is to investigate factor groups of a finite group G using this
Liu, Xiaolei, Ding, Nanqing
core   +1 more source

On the Prime Divisors of Conjugacy Lengths of Solvable Groups

open access: yes, 2008
Suppose that G is a finite group. We prove that if G/F (G) is solvable of odd order or supersolvable; and G does not contain abelian normal non-central Sylow subgroups, then |cρ(G)| ≤ 3cσ(G). Let m be the total number of abelian Sylow subgroups and n the
Liguo He
core  

New characterizations of p-nilpotency and Sylow tower groups

open access: yes, 2013
We introduce a new subgroup embedding property of finite groups called s*-permutably embedding. By using this embedding property and formation theory, we obtain some new characterizations of p-nilpotency and Sylow tower groups of supersolvable type. Some
Mohd Aizat bin Mohamad Nor
core  

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