Results 1 to 10 of about 77,404 (196)

α-Reflexive Rings with Involution

open access: yesمجلة المختار للعلوم, 2021
This paper studies the concept of the -quasi-*-IFP (resp.,  -*-reflexive) *-rings, as a generalization of the quasi-*-IFP (resp., *-reflexive) *-rings and every quasi-*-IFP (resp., *-reflexive) *-ring is  -quasi-*-IFP (resp., -*-reflexive).
Muna E. Abdulhafed   +1 more
doaj   +1 more source

Applications of (Neutro/Anti)sophications to Semihypergroups

open access: yesJournal of Mathematics, 2021
In this paper, we extend the notion of semi-hypergroups (resp. hypergroups) to neutro-semihypergroups (resp. neutro-hypergroups). We investigate the property of anti-semihypergroups (resp. anti-hypergroups).
A. Rezaei, F. Smarandache, S. Mirvakili
doaj   +1 more source

The Arf-Kervaire invariant of framed manifolds as an obstruction to embeddability

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2022
We prove that no 14-connected (resp. 30-connected) stably parallelizable manifold N^30 (resp. N^62) of dimension 30 (resp. 62) with the Arf-Kervaire invariant 1 can be smoothly embedded into R^36 (resp. R^83).
Peter M. Akhmetiev   +2 more
doaj   +1 more source

On Qp-Closed Sets in Topological Spaces

open access: yesJournal of Mathematics, 2022
In the present paper, we will propose the novel notions (e.g., Qp-closed set, Qp-open set, Qp-continuous mapping, Qp-open mapping, and Qp-closed mapping) in topological spaces.
Huan Zhou   +2 more
doaj   +1 more source

Ausgestorbene Meeresküstenungetüme τροχοί resp. rotae

open access: yesErga-Logoi, 2019
The paper discuss Claudius Aelian’s testimony concerning mysterious sea monsters called τροχοί (NA XIII 20). According to Aelian, these gigantic but timid animals swim in droves close to the shore.
Elwira Kaczynska   +2 more
doaj   +1 more source

More On P-Union and P-Intersection of Neutrosophic Soft Cubic Set [PDF]

open access: yesNeutrosophic Sets and Systems, 2017
The P-union ,P-intersection, P-OR and P-AND of neutrosophic soft cubic sets are introduced and their related properties are investigated. We show that the P-union and the P-intersection of two internal neutrosophic soft cubic sets are also internal ...
R. Anitha Cruz, F. Nirmala Irudayam
doaj   +1 more source

Caulleriella mediterranea, a new species of polychaete (Annelida: Cirratulidae) from the central Mediterranean Sea

open access: yesThe European Zoological Journal, 2017
A new species belonging to the genus Caulleriella Chamberlin, 1919 (Polychaeta: Cirratulidae) is described from coastal soft bottom sediments off the northwest Italy coast in fine sand at around 8 m depth. Caulleriella mediterranea sp. nov.
M. Lezzi
doaj   +1 more source

Videofluoroscopic swallow study abnormalities identify aerodigestive disorders in dogs with respiratory disease versus healthy controls

open access: yesJournal of Veterinary Internal Medicine, 2023
Background Aerodigestive diseases (AeroD) pathologically link respiratory and alimentary tracts. Dogs with respiratory signs lacking dysphagia, vomiting, or regurgitation typically do not undergo diagnostic testing that identifies comorbid alimentary ...
Jennifer Howard   +3 more
doaj   +1 more source

On Centrally Prime and Centrally Semiprime Rings [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2008
In this paper, centrally prime and centrally semiprime rings are defined and the relations between these two rings and prime (resp. semiprime) rings are studied.Among the results of the paper some conditions are given under which prime (resp.
Adil Jabbar, Abdularahman Majeed
doaj   +1 more source

On the Relationship between Jordan Algebras and Their Universal Enveloping Algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2020
The relationship between JW-algebras (resp. JC-algebras) and their universal enveloping von Neumann algebras (resp. C∗-algebras) can be described as significant and influential. Examples of numerous relationships have been established.
F. B. H. Jamjoom, A. H. Al Otaibi
doaj   +1 more source

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