Results 31 to 40 of about 9,759,418 (313)

Groups with Subnormal Deviation

open access: yesMathematics, 2023
The structure of groups which are rich in subnormal subgroups has been investigated by several authors. Here, we prove that if a periodic soluble group G has subnormal deviation, which means that the set of its non-subnormal subgroups satisfies a very ...
Francesco de Giovanni   +2 more
doaj   +1 more source

Large groups and their periodic quotients [PDF]

open access: yesProceedings of the American Mathematical Society, 2007
We first give a short group theoretic proof of the following result of Lackenby. If G G is a large group,
Olshanskii, A. Yu., Osin, D. V.
openaire   +3 more sources

Explicit error bounds for the α-quasi-periodic Helmholtz problem [PDF]

open access: yes, 2013
This paper considers a finite element approach to modeling electromagnetic waves in a periodic diffraction grating. In particular, an a priori error estimate associated with the α-quasi-periodic transformation is derived.
Mulholland, Anthony   +2 more
core   +1 more source

On a Sufficient Condition for the Existence of a Periodic Part in the Shunkov Group

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2017
The group $ G $ is saturated with groups from the set of groups if any a finite subgroup $ K $ of $ G $ is contained in a subgroup of $ G $, which is isomorphic to some group in $ \mathfrak{X} $.
A.A. Shlepkin
doaj   +1 more source

Properties of groups with points [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2009
In this paper, we consider groups with points which were introduced by V.P. Shunkov in 1990. In Novikov-Adian's group, Adian's periodic products of finite groups without involutions and Olshansky's periodic monsters every non-unit element is a point ...
V.I. Senashov, E.N. Takovleva
doaj   +1 more source

Antea Group Archeologie 2019/164

open access: yes, 2020
projectnummer 456639 rapportvolgnummer 2019/164 De aanleiding tot het uitvoeren van dit bureauonderzoek en inventariserend veldonderzoek door middel van boringen is de voorgenomen sanering c.q.
Fens, R. (Antea Group)   +9 more
core   +1 more source

Antea Group Archeologie 2020/159

open access: yes, 2021
In augustus 2020 – maart 2021 heeft Antea Group een archeologisch bureauonderzoek en inventariserend veldonderzoek uitgevoerd ter voorbereiding op het verleggen van een DN400 drinkwaterleiding in Ewijk, gemeente Beuningen.
Fens, R.L. (Antea Group)   +1 more
core   +1 more source

On solving discrete-time periodic Riccati equations [PDF]

open access: yes, 2005
Two numerically reliable algorithms to compute the periodic nonnegative definite stabilizing solution ofdiscrete-time periodic Riccati equations are proposed.
A. Varga, Varga, Andras
core   +1 more source

A remark on group rings of periodic groups [PDF]

open access: yesInternational Journal of Group Theory, 2016
A positive solution of the problem of the existence of nontrivial pairs of zero-divisors in group rings of free Burnside groups of sufficiently large odd periods $n>10^{10}$ obtained previously by S. V. Ivanov and R. Mikhailov extended to all odd periods
Artur Grigoryan
doaj  

On Periodic Groups Saturated with Finite Frobenius Groups

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2021
A group is called weakly conjugate biprimitively finite if each its element of prime order generates a finite subgroup with any of its conjugate elements. A binary finite group is a periodic group in which any two elements generate a finite subgroup. If $
B. E. Durakov, A.I. Sozutov
doaj   +1 more source

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