Results 1 to 10 of about 1,175,469 (335)

Generalized almost periodicity in groups [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1974
A module of almost periodic functions on a group is closed with respect to a quite general seminorm. The new space of functions is characterized in terms of the internal properties of its members. This yields new characterizations of Besicovitch and Weyl almost periodic functions in a variety of group-theoretic settings.
Henry W. Davis
openalex   +2 more sources

Periodic Complexes and Group Actions [PDF]

open access: yesThe Annals of Mathematics, 2000
In this paper we show that the cohomology of a connected CW complex is periodic if and only if it is the base space of an orientable spherical fibration with total space that is homotopically finite dimensional.
Adem, Alejandro, Smith, Jeff H.
core   +5 more sources

Blood‒brain barrier opening with Golay-coded ultrasound to improve therapeutic consistency in glioblastoma models [PDF]

open access: yesDrug Delivery
Transcranial-focused ultrasound has demonstrated potential for blood–brain barrier (BBB) opening and localized drug delivery to intracranial brain lesions, making it a promising therapeutic strategy for glioblastoma (GBM) treatment.
Seoyun Chang   +7 more
doaj   +2 more sources

Periodic modes of group dominance in fully coupled neural networks [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2021
Nonlinear systems of differential equations with delay, which are mathematical models of fully connected networks of impulse neurons, are considered.
Glyzin, Sergey Dmitrievich   +1 more
doaj   +1 more source

Periodicity in groups [PDF]

open access: bronzeIllinois Journal of Mathematics, 1977
J. L. Alperin
openalex   +4 more sources

On Periodic Shunkov’s Groups with Almost Layer-finite Normalizers of Finite Subgroups

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2021
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

On a bottom layer in a group

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
We consider the problem of recognizing a group by its bottom layer. This problem is solved in the class of layer-finite groups. A group is layer-finite if it has a finite number of elements of every order. This concept was first introduced by S.
V.I. Senashov, I.A. Paraschuk
doaj   +1 more source

Commutative periodic group rings

open access: yesМатематичні Студії, 2020
We find a satisfactory criterion when a commutative group ring $R(G)$ is periodic only in terms of $R$, $G$ and their sections, provided that $R$ is local.
P. Danchev
doaj   +1 more source

Particular Symmetries: Group Theory of the Periodic System

open access: yesSubstantia, 2020
To this day, a hundred and fifty years after Mendeleev's discovery, the overal structure of the periodic system remains unaccounted for in quantum-mechanical terms.
Pieter Thyssen, Arnout Ceulemans
doaj   +1 more source

Non-periodic groups with the restrictions on the norm of cyclic subgroups of non-prime order

open access: yesМатематичні Студії, 2022
One of the main directions in group theory is the study of the impact of characteristic subgroups on the structure of the whole group. Such characteristic subgroups include different $\Sigma$-norms of a group.
M. Drushlyak, T. Lukashova
doaj   +1 more source

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