Results 11 to 20 of about 43,676 (238)

Exchange PF-rings and almost PP-rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
Let R be a commutative ring with unity. In this paper, we prove that R is an almost PP–PM–ring if and only if R is an exchange PF–ring. Let X be a completely regular Hausdorff space, and let βX be the Stone Čech compactification of X.
H. Al-Ezeh
doaj   +1 more source

Analysis of Latency-Aware Network Slicing in 5G Packet xHaul Networks [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2023
Packet-switched xHaul networks are a scalable solution enabling convergent transport of diverse types of radio data flows, such as fronthaul / midhaul / backhaul (FH / MH / BH) flows, between remote sites and a central site (hub) in 5G radio access ...
Mirosław Klinkowski
doaj   +1 more source

On some properties of polynomials rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
For a commutative ring with unity R, it is proved that R is a PF-ring if and only if the annihilator, annR(a), for each a ϵ R is a pure ideal in R, Also it is proved that the polynomial ring, R[X], is a PF-ring if and only if R is a PF-ring.
H. Al-Ezeh
doaj   +1 more source

Perchloratobis[1-(1,10-phenanthrolin-2-yl)-2-pyridone]zinc(II) perchlorate

open access: yesActa Crystallographica Section E, 2009
In the title mononuclear complex, [Zn(ClO4)(C17H11N3O)2]ClO4, the ZnII ion is coordinated in a distorted octahedral geometry. The dihedral angles between the pyridine rings and the mean planes of the 1,10-phenanthroline ring system in each of the 1-(1,10-
Qing Ru Zhao, Qi Sheng Liu, Qing Yun Liu
doaj   +1 more source

Mary Douglas. Thinking in Circles. An Essay on Ring Composition

open access: yesSuomen Antropologi, 2008
MARY DOUGLAS. Thinking in Circles. An Essay on Ring Composition. New Haven: Yale University Press, 2007. Pp. 192. ISBN 978-0-300-11762-2 (cloth).
Janne Juhana Rantala
doaj   +1 more source

Some Extensions of Generalized Morphic Rings and EM-rings

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2018
Let R be a commutative ring with unity. The main objective of this article is to study the relationships between PP-rings, generalized morphic rings and EM-rings. Although PP-rings are included in the later rings, the converse is not in general true.
Ghanem Manal, Abu Osba Emad
doaj   +1 more source

A GENERALIZATION OF PP-RINGS AND p.q.-BAER RINGS [PDF]

open access: yesGlasgow Mathematical Journal, 2006
We introduce the concept of left APP-rings which is a generalization of left p.q.-Baer rings and right PP-rings, and investigate its properties. It is shown that the APP property is inherited by polynomial extensions and is a Morita invariant property.
LIU ZHONGKUI, ZHAO RENYU
openaire   +1 more source

Two properties of the power series ring

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
For a commutative ring with unity, A, it is proved that the power series ring A〚X〛 is a PF-ring if and only if for any two countable subsets S and T of A such that S⫅annA(T), there exists c∈annA(T) such that bc=b for all b∈S.
H. Al-Ezeh
doaj   +1 more source

Survival Rate of Cells Sent by a Low Mechanical Load Tube Pump: The “Ring Pump”

open access: yesMicromachines, 2020
A ring pump (RP) is a useful tool for microchannels and automated cell culturing. We have been developing RPs (a full-press ring pump, FRP; and a mid-press ring pump, MRP).
Kaoru Uesugi   +7 more
doaj   +1 more source

Polypropylene-based graft copolymers via CuAAC click chemistry

open access: yeseXPRESS Polymer Letters, 2018
Graft copolymers from commercial chlorinated polypropylene (PP-Cl) possessing either poly(ethylene glycol) (PEG) or poly(ε-caprolactone) (PCL) grafts are synthesized by copper (I)-catalyzed azide-alkyne cycloaddition ‘click’ reaction (CuAAC).
G. Acik, E. Sey, M. A. Tasdelen
doaj   +1 more source

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