Zobrazeno 1 - 10
of 702
pro vyhledávání: '"Davvaz Bijan"'
Publikováno v:
Discussiones Mathematicae - General Algebra and Applications, Vol 42, Iss 1, Pp 5-16 (2022)
In this paper, the notion of generalized centroid is applied to hyperrings. We show that the generalized centroid C of a semiprime hyperring R is a regular hyperring. Also, we show that if C is a hyperfield, then R is a prime hyperring.
Externí odkaz:
https://doaj.org/article/d898e95c38ec4e52b70b338bd5a7a64f
Publikováno v:
Foundations of Computing and Decision Sciences, Vol 46, Iss 4, Pp 319-337 (2021)
Rough set theory is a mathematical approach to imperfect knowledge. The near set approach leads to partitions of ensembles of sample objects with measurable information content and an approach to feature selection. In this paper, we apply the previou
Externí odkaz:
https://doaj.org/article/3f60322c9fa444c1ac11299a7a5eb55f
Publikováno v:
Open Mathematics, Vol 18, Iss 1, Pp 1935-1951 (2020)
In this paper, we study various strongly convex hyper S-subposets of hyper S-posets in detail. To begin with, we consider the decomposition of hyper S-posets. A unique decomposition theorem for hyper S-posets is given based on strongly convex indecom
Externí odkaz:
https://doaj.org/article/6be30dad207f48dea30becb11b487b0c
Publikováno v:
Discussiones Mathematicae - General Algebra and Applications, Vol 40, Iss 1, Pp 49-62 (2020)
Let be a ring with center Z(). A mapping f : → is said to be strong commutativity preserving (SCP) on if [f (x), f (y)] = [x, y] and is said to be strong anti-commutativity preserving (SACP) on if f (x) ◦ f (y) = x
Externí odkaz:
https://doaj.org/article/89f7ca5c428f4b7885153729429a54aa
Publikováno v:
Open Mathematics, Vol 17, Iss 1, Pp 1526-1537 (2019)
A graph is said to be NSSD (=non-singular with a singular deck) if it has no eigenvalue equal to zero, whereas all its vertex-deleted subgraphs have eigenvalues equal to zero. NSSD graphs are of importance in the theory of conductance of organic comp
Externí odkaz:
https://doaj.org/article/43d3844529354cb6bfb065827d3499d1
Autor:
Omidi Saber, Davvaz Bijan
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 27, Iss 1, Pp 193-210 (2019)
In this paper, we study some properties of ordered Krasner hyper-rings. Also we state some definitions and basic facts and prove some results on ordered Krasner hyperring (R, +, ·, ≤). In particular, we introduce the concepts of prime hyperideals
Externí odkaz:
https://doaj.org/article/43e9a09f083740c9801dc94a50df9364
Publikováno v:
Open Mathematics, Vol 16, Iss 1, Pp 168-184 (2018)
In this paper, we study the ordered regular equivalence relations on ordered semihypergroups in detail. To begin with, we introduce the concept of weak pseudoorders on an ordered semihypergroup, and investigate several related properties. In particul
Externí odkaz:
https://doaj.org/article/23811c6e24494213a0827eb5fcc41ce8
Publikováno v:
Foundations of Computing and Decision Sciences, Vol 42, Iss 1, Pp 59-81 (2017)
The initiation and majority on rough sets for algebraic hyperstructures such as hypermodules over a hyperring have been concentrated on a congruence relation. The congruence relation, however, seems to restrict the application of the generalized roug
Externí odkaz:
https://doaj.org/article/4ed9a552f45c48548ec57641030587e7
Publikováno v:
Open Mathematics, Vol 15, Iss 1, Pp 37-56 (2017)
In this paper, we define and study the hyper S-posets over an ordered semihypergroup in detail. We introduce the hyper version of a pseudoorder in a hyper S-poset, and give some related properties. In particular, we characterize the structure of fact
Externí odkaz:
https://doaj.org/article/52de618bd48a4092b35f55bb7cf2fc9e
Publikováno v:
Journal of Intelligent Systems, Vol 25, Iss 2, Pp 99-106 (2016)
The aim of this article is to develop a representation theory of interval-valued Łukasiewicz–Moisil algebras; the concept of interval fuzzy sets involves the role that the notion of field of sets plays for the representation of Boolean algebras. T
Externí odkaz:
https://doaj.org/article/a4871d4e91d94ec99d2854e2d5c7afc2