Results 41 to 50 of about 241,774 (311)

Locally Finite Groups Saturated with Direct Product of Two Finite Dihedral Groups

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
In the study of infinite groups, as a rule, some finiteness conditions are imposed. For example, the group is required to be periodic, Shunkov group, Frobenius group, locally finite group.
A. V. Kukharev, A.A. Shlepkin
doaj   +1 more source

Groups with a Strongly Embedded Subgroup Saturated with Finite Simple Non-abelian Groups

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2020
An important concept in the theory of finite groups is the concept of a strongly embedded subgroup. The fundamental result on the structure of finite groups with a strongly embedded subgroup belongs to M. Suzuki.
A.A. Shlepkin
doaj   +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  

A Whitehead theorem for periodic homotopy groups [PDF]

open access: yes, 2018
We show that $v_n$-periodic homotopy groups detect homotopy equivalences between simply-connected finite CW ...
Barthel, Tobias   +4 more
core   +2 more sources

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

Multiplicity of periodic solutions in bistable equations

open access: yes, 2006
We study the number of periodic solutions in two first-order non-autonomous differential equations, both of which have been used to describe, among other things, the mean magnetization of an Ising magnet in a time-varying external magnetic field.
Grinfeld, Michael   +3 more
core   +1 more source

Amenability, Countable Equivalence Relations, and Their Full Groups [PDF]

open access: yes, 2008
This thesis consists of an introduction and four independent chapters. In Chapter 1, we study homeomorphism groups of metrizable compactifications of the natural numbers. Those groups can be represented as almost zero-dimensional Polishable subgroups
Tsankov, Todor Dimitrov
core   +1 more source

PFAPA (periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis) syndrome in children; surgical versus medical treatment?

open access: yesMedicine Science, 2021
PFAPA (periodic fever, aphthous stomatitis, pharyngitis, and cervical lymphadenopathy) syndrome usually presents in childhood and one of the most common periodic fever syndromes.
Yuksel Toplu   +3 more
doaj   +1 more source

On the dynamics of sup-norm non-expansive maps [PDF]

open access: yes, 2005
We present several results for the periods of periodic points of sup-norm non-expansive maps. In particular, we show that the period of each periodic point of a sup-norm non-expansive map $f\colon M\to M$, where $M\subset \mathbb{R}^n$, is at most ...
Lemmens, Bas   +3 more
core   +1 more source

Periodic limb movements among dialysis and non-dialysis chronic kidney disease patients: a comparative study

open access: yesThe Egyptian Journal of Bronchology, 2022
Background Periodic leg movement disorder is defined as periodic episodes of repetitive limb movements during sleep that mainly occurs in the lower limb, including the hips, knees, and toes, and sometimes affects the upper limb.
Samah Kotb   +3 more
doaj   +1 more source

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