Results 41 to 50 of about 116,382 (312)

K-causality coincides with stable causality

open access: yes, 2008
It is proven that K-causality coincides with stable causality, and that in a K-causal spacetime the relation K^+ coincides with the Seifert's relation. As a consequence the causal relation "the spacetime is strongly causal and the closure of the causal ...
Minguzzi, E.
core   +2 more sources

Relation-theoretic metrical coincidence theorems under weak C-contractions and K-contractions

open access: yesAIMS Mathematics, 2021
In this paper, we prove some coincidence point theorems for weak C-contractions and K-contractions involving a new auxiliary function in a metric space endowed with a locally f-transitive binary relation.
Faruk Sk, Asik Hossain , Qamrul Haq Khan
doaj   +1 more source

Some local properties defining $T_0$-groups and related classes of groups [PDF]

open access: yes, 2016
We call G a Hall_X -group if there exists a normal nilpotent subgroup N of G for which G/N' is an X -group. We call G a T_0-group provided G/Φ(G) is a T -group, that is, one in which normality is a transitive relation.
Ballester-Bolinches, Adolfo   +3 more
core   +4 more sources

Congruences in transitive relational systems [PDF]

open access: yesMiskolc Mathematical Notes, 2004
Summary: A transitive relational system is a pair \((A,R)\) where \(A \not = \emptyset\) and \(R\) is a transitive binary relation on \(A\). We define a congruence \(\theta\) on \((A,R)\) and a factor relation \(R / \theta\) on the factor set \(A / \theta\) such that the factor system \((A / \theta,R / \theta)\) is also a transitive relational system ...
openaire   +4 more sources

Glass Transition and Related Phenomena

open access: yesInternational Journal of Molecular Sciences, 2023
Despite recent advances in the study of complex systems, which were recognized by the Nobel Prize in Physics in 2021, glass transition and the physicochemical phenomena that occur in the supercooled liquid and glassy states have remained shrouded, at least partially, in mystery for various material groups [...]
openaire   +2 more sources

Data fragmentation for parallel transitive closure strategies [PDF]

open access: yes, 1993
Addresses the problem of fragmenting a relation to make the parallel computation of the transitive closure efficient, based on the disconnection set approach. To better understand this design problem, the authors focus on transportation networks.
Apers, Peter M.G.   +3 more
core   +2 more sources

Sobre ciertas expresiones de la funcion rango, independientes de la teoria de ordinales [PDF]

open access: yes, 1980
In the present work we obtain several representations of the rank func- tion associated to a well founded relation in terms of transitive and supertransitive closures, by means of transfinite recursion theorems con- cerning these relations and with no ...
Pérez-Jiménez, Mario de J.
core   +3 more sources

Employing Locally Finitely T-Transitive Binary Relations to Prove Coincidence Theorems for Nonlinear Contractions

open access: yesJournal of Function Spaces, 2020
In this article, we prove some relation-theoretic results on coincidence and common fixed point for a nonlinear contraction employing a locally finitely T-transitive binary relation, where T stands for a self-mapping on the underlying metric space.
Mohammad Arif   +3 more
doaj   +1 more source

Relation-preserving generalized nonlinear contractions and related fixed point theorems

open access: yesAIMS Mathematics, 2022
In this paper, we present some fixed point theorems for generalized nonlinear contractions involving a new pair of auxiliary functions in a metric space endowed with a locally finitely T-transitive binary relation.
Faruk Sk   +3 more
doaj   +1 more source

Topological and variational modularity: A case study using the pectoral girdle across the Chrosomus eos‐neogaeus hybridization complex

open access: yesThe Anatomical Record, EarlyView.
Abstract Modularity and integration are key developmental properties and have remained central in evo‐devo research because of how they relate to evolvability. While modularity and integration have commonly been assessed with landmark‐based geometric morphometrics (GMM), other methods such as anatomical network analysis (AnNA) are increasingly being ...
Kevin K. Duclos   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy