Results 21 to 30 of about 218,992 (317)

Limit periodic linear difference systems with coefficient matrices from commutative groups

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
In this paper, limit periodic and almost periodic homogeneous linear difference systems are studied. The coefficient matrices of the considered systems belong to a given commutative group.
Petr Hasil, Michal Veselý
doaj   +1 more source

catena-Poly[[diaquabis(1,3-dihydro-3-oxoisobenzofuran-1-acetato)copper(II)]-μ-N,N′-(ethane-1,2-diyl)dinicotinamide]

open access: yesIUCrData, 2023
The title compound, {[Cu(C10H7O4)2(C14H14N4O2)(H2O)2]n, contains octahedrally coordinated CuII ions ligated by two bis(1,3-dihydro-3-oxo-1-isobenzofuranacetate (dibf) ligands and two trans water molecules, linked by N,N′-(ethane-1,2-diyl)dinicotinamide ...
Sean R. Pumford, Robert L. LaDuca
doaj   +1 more source

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

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  

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

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

Periodic sub-groups [PDF]

open access: yesJournal of Chemical Education, 1978
Why are the elements of the periodic table still being labeled with A and B? This author suggests it is time to leave that convention behind.
openaire   +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

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar   +8 more
wiley   +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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