Results 41 to 50 of about 4,508 (288)

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

Alignment and Differentiation: How Language and Network Proximity Drive Opinion‐Based Group Formation Online

open access: yesEuropean Journal of Social Psychology, EarlyView.
ABSTRACT This study examines the interplay between language and social connectedness in forming opinion‐based groups on social media. Drawing on small‐world theory and social identity theory, we propose a dual‐layer approach that combines semantic and network analysis to investigate the dynamics of group formation on X/Twitter during the 2021 COVID‐19 ...
Davide Morselli   +8 more
wiley   +1 more source

Generalized Weak Contractions Involving a Pair of Auxiliary Functions via Locally Transitive Binary Relations and Applications to Boundary Value Problems

open access: yesMathematics
The intent of this paper was to investigate the fixed-point results under relation-theoretic generalized weak contractivity condition employing a pair of auxiliary functions ϕ and ψ verifying appropriate properties.
Nidal H. E. Eljaneid   +5 more
doaj   +1 more source

The combinational structure of non-homogeneous Markov chains with countable states

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
Let P(s,t) denote a non-homogeneous continuous parameter Markov chain with countable state space E and parameter space [a,b], −∞
A. Mukherjea, A. Nakassis
doaj   +1 more source

Caste as a Social Kind

open access: yesJournal of Applied Philosophy, EarlyView.
ABSTRACT Gender and race have received significant philosophical attention recently; they are the paradigm cases of social kinds in most philosophical accounts. I argue for the inclusion of caste as a social kind because it affects the lives of many people, and because it presents itself as an important test case for philosophers of social kinds.
Ajinkya Deshmukh
wiley   +1 more source

Reachability Relations and the Structure of Transitive Digraphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2009
In this paper we investigate reachability relations on the vertices of digraphs. If $W$ is a walk in a digraph $D$, then the height of $W$ is equal to the number of edges traversed in the direction coinciding with their orientation, minus the number of edges traversed opposite to their orientation.
Seifter, Norbert, Trofimov, Vladimir I.
openaire   +2 more sources

Simple 3‐Designs of PSL ( 2 , 2 n ) With Block Size 13

open access: yesJournal of Combinatorial Designs, EarlyView.
ABSTRACT This paper focuses on the investigation of simple 3‐ ( 2 n + 1 , 13 , λ ) designs admitting PSL ( 2 , 2 n ) as an automorphism group. Such designs arise from the orbits of 13‐element subsets under the action of PSL ( 2 , 2 n ) on the projective line X = GF ( 2 n ) ∪ { ∞ }, and any union of these orbits also forms a 3‐design.
Takara Kondo, Yuto Nogata
wiley   +1 more source

Geraghty Type Contractions in Relational Metric Space with Applications to Fractional Differential Equations

open access: yesFractal and Fractional, 2023
The present manuscript is devoted to investigating some existence and uniqueness results on fixed points by employing generalized contractions in the context of metric space endued with a weak class of transitive relation.
Ahmed Alamer   +4 more
doaj   +1 more source

Fuzzy T-transitive relations: eigenvectors and generators

open access: yesFuzzy Sets and Systems, 1995
After some preliminaries, the set of generators of a generalized equality relation (T-indistinguishability operator) is studied. This set is identified with the set of the eigenvectors of the relation. The relation between the fuzzy and “metric” topologies derived from these equalities is stablished.
Jacas Moral, Juan   +1 more
openaire   +4 more sources

Unravelling the Major Cardiovascular Risks of Systemic Psoriasis Medications: A Literature Systematic Review

open access: yesJEADV Clinical Practice, EarlyView.
ABSTRACT Background Psoriasis is a chronic inflammatory dermatological condition associated with an elevated risk of cardiovascular events (CVEs). Systemic therapies have transformed disease management, but their cardiovascular (CV) safety profiles remain incompletely understood and inconsistently reported.
Mai Thi Hoai Son   +10 more
wiley   +1 more source

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