Results 51 to 60 of about 1,311,479 (362)
On the properties of contact binary stars
, 2004 A catalogue of light curve solutions of contact binary stars has been compiled. It contains the results of 159 light curve solutions. Properties of contact binary stars were studied by using the catalogue data. As it is well known since Lucy's (1968a,b)
Binnendijk +22 more
core +1 more source
Ideals and Filters on Neutrosophic Topologies Generated by Neutrosophic Relations
AxiomsRecently, Milles and Hammami presented and studied the concept of a neutrosophic topology generated by a neutrosophic relation. As a continuation in the same direction, this paper studies the concepts of neutrosophic ideals and neutrosophic filters on ...
Ravi P. Agarwal +4 more
doaj +1 more source
How rare are the properties of binary relations? [PDF]
arXiv, 2022 Knoblauch (2014) and Knoblauch (2015) investigate the relative size of the collection of binary relations with desirable features as compared to the set of all binary relations using symmetric difference metric (Cantor) topology and Hausdorff metric topology. We consider Ellentuck and doughnut topologies to further this line of investigation. We report
arxiv
Operations on binary relations
Discrete Mathematics, 1978 AbstractThe effects of five basic operations (asymmetrization, complementation, dualization, symmetrization, transitive closure) on binary relations are examined. Identifies between compound operations are developed (e.g. the symmetric part of the transitive closure of the complement of the transitive closure equals the transitive closure of the ...
openaire +1 more source
Axioms, 2023 This article is devoted to investigating the fixed point theorems for a new contracitivity contraction, which combines the idea involved in Boyd-Wong contractions, strict almost contractions and relational contractions.
Amal F. Alharbi, Faizan Ahmad Khan
doaj +1 more source
Comparable binary relations and the amalgamation property [PDF]
arXiv, 2023 The theory of two binary relations has the strong amalgamation property when the first relation is assumed to be coarser than the second relation, and each relation satisfies a chosen set of properties from the following list: transitivity, reflexivity, symmetry, antireflexivity and antisymmetry.
arxiv
Residuated Relational Systems [PDF]
Asian-European Journal of Mathematics 2018, 2018 The aim of the present paper is to generalize the concept of residuated poset, by replacing the usual partial ordering by a generic binary relation, giving rise to relational systems which are residuated. In particular, we modify the definition of adjointness in such a way that the ordering relation can be harmlessly replaced by a binary relation.
arxiv +1 more source
Normal forms for binary relations [PDF]
Theoretical Computer Science, 2006 AbstractWe consider the representable equational theory of binary relations, in a language expressing composition, converse, and lattice operations. By working directly with a presentation of relation expressions as graphs we are able to define a notion of reduction which is confluent and strongly normalizing and induces a notion of computable normal ...
Dougherty, Daniel J. +1 more
openaire +1 more source
Ample Spectrum Contractions and Related Fixed Point Theorems
Mathematics, 2019 Simulation functions were introduced by Khojasteh et al. as a method to extend several classes of fixed point theorems by a simple condition. After that, many researchers have amplified the knowledge of such kind of contractions in several ways.
Antonio Francisco Roldán López de Hierro +1 more
doaj +1 more source
Relational representations of algebraic lattices and their applications
Open Mathematics, 2022 In this paper, we define the concepts of strongly regular relation, finitely strongly regular relation, and generalized finitely strongly regular relation, and get the relational representations of strongly algebraic, hyperalgebraic, and quasi ...
Luo Shuzhen, Xu Xiaoquan
doaj +1 more source