Results 21 to 30 of about 241,774 (311)

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

On Periodic Groups of Shunkov with the Chernikov Centralizers of Involutions

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2020
Layer-finite groups first appeared in the work by S.~N.~Chernikov (1945). Almost layer-finite groups are extensions of layer-finite groups by finite groups.
V.I. Senashov
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

On groups of period 12

open access: yesSiberian Mathematical Journal, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lytkina, D. V., Mazurov, V. D.
openaire   +2 more sources

On Periodic Groups Isospectral to A7 [PDF]

open access: yesSiberian Mathematical Journal, 2020
The spectrum of a periodic group $G$ is the set $ω(G)$ of its element orders. Consider a group $G$ such that $ω(G)=ω(A_7)$. Assume that $G$ has a subgroup $H$ isomorphic to $A_4$, whose involutions are squares of elements of order $4$. We prove that either $O_2(H) \subseteq O_2(G)$ or $G$ has a finite nonabelian simple subgroup.
openaire   +2 more sources

Some classes of minimally almost periodic topological groups

open access: yesApplied General Topology, 2015
A Hausdorff topological group G=(G,T) has the small subgroup generating property (briefly: has the SSGP property, or is an SSGP group) if for each neighborhood U of $1_G$ there is a family $\sH$ of subgroups of $G$ such that $\bigcup\sH\subseteq U$ and $\
Wistar Comfort, Franklin R. Gould
doaj   +1 more source

Beta to theta power ratio in EEG periodic components as a potential biomarker in mild cognitive impairment and Alzheimer’s dementia

open access: yesAlzheimer’s Research & Therapy, 2023
Background Alzheimer’s dementia (AD) is associated with electroencephalography (EEG) abnormalities including in the power ratio of beta to theta frequencies.
Hamed Azami   +14 more
doaj   +1 more source

Bifurcation from relative periodic solutions [PDF]

open access: yes, 2001
Published ...
Lamb, JSW   +8 more
core   +1 more source

Frequent periodic leg movement during sleep is an unrecognized risk factor for progression of atrial fibrillation. [PDF]

open access: yesPLoS ONE, 2013
Sleep apnea has been recognized as a factor predisposing to atrial fibrillation recurrence and progression. The effect of other sleep-disturbing conditions on atrial fibrillation progression is not known.
Mahek Mirza   +9 more
doaj   +1 more source

PERIODIC CONFIGURATIONS OF SUBSHIFTS ON GROUPS [PDF]

open access: yesInternational Journal of Algebra and Computation, 2009
We study the density of periodic configurations for shift spaces defined on (the Cayley graph of) a finitely generated group. We prove that in the case of a full shift on a residually finite group and in that of a group shift space on an abelian group, the periodic configurations are dense.
openaire   +2 more sources

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