Results 141 to 150 of about 35,760 (258)

Partial Steiner Triple Systems With an Almost Parallel Class Missing Any Given Point

open access: yesJournal of Combinatorial Designs, EarlyView.
ABSTRACT We say that a hypergraph is factor critical if it has no 1‐factor but deletion of any vertex results in a hypergraph that has a 1‐factor. We show that any factor‐critical hypergraph of order n $n$ has at least n $n$ edges, and that for all integers k > 1 $k\gt 1$ and n > 1 $n\gt 1$ with n ≡ 1 ( mod k ) $n\equiv 1({\rm{mod}}\,k)$ there exists a
Darryn Bryant   +2 more
wiley   +1 more source

Alexithymia in Schizophrenia and Psychosis Vulnerability: A Systematic Review and Meta‐Analysis

open access: yesJournal of Clinical Psychology, Volume 81, Issue 6, Page 410-424, June 2025.
ABSTRACT Aims Disturbances involving impairments in experience and expression of affect are frequently identified in schizophrenia samples. Alexithymia underlies cognitive impairments in identification and expression of affect, further implicated in affect dysregulation.
Ercan Ozdemir   +3 more
wiley   +1 more source

Maternal depression across childhood and offspring young adult depression and anxiety: Testing adolescent emotion dynamics as transdiagnostic mechanisms

open access: yesJCPP Advances, EarlyView.
Abstract Background Early exposure to maternal depression can increase risk for offspring mental health problems across the lifespan. Less is known about the transdiagnostic pathways through which maternal depression influences offspring mental health risk in young adulthood.
Gabrielle R. Rinne   +3 more
wiley   +1 more source

Establishing a transdiagnostic dimension of early childhood depressive symptoms using the Preschool Feelings Checklist‐Scale

open access: yesJCPP Advances, EarlyView.
Abstract Background Young child depressive symptoms are associated with various concurrent and future psychiatric problems, indicating early transdiagnostic risk for psychopathology. We now need studies that identify and test the robustness, reliability, and validity of early emerging depressive symptom dimensions, examining them relative to wide ...
Nicolas L. Camacho   +4 more
wiley   +1 more source

On Odd Covers of Cliques and Disjoint Unions

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT Babai and Frankl posed the “odd cover problem” of finding the minimum cardinality of a collection of complete bipartite graphs such that every edge of the complete graph of order n $n$ is covered an odd number of times. In a previous paper with O'Neill, some of the authors proved that this value is always ⌈ n / 2 ⌉ $\lceil n/2\rceil $ or ⌈ n /
Calum Buchanan   +7 more
wiley   +1 more source

Cardinality heterogeneities in Web service composition: Issues and solutions

open access: yes, 2008
Data exchanges between Web services engaged in a composition raise several heterogeneities. In this paper, we address the problem of data cardinality heterogeneity in a composition.
MAAMAR, Zakaria   +4 more
core  

The Strong Nash‐Williams Orientation Theorem for Rayless Graphs

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT In 1960, Nash‐Williams proved his strong orientation theorem that every finite graph has an orientation in which the number of arc‐disjoint directed paths between any two vertices is at least half the number of undirected edge‐disjoint paths between them (rounded down).
Max Pitz, Jacob Stegemann
wiley   +1 more source

Minimal Dispersion on the Sphere. [PDF]

open access: yesDiscrete Comput Geom
Litvak AE, Sonnleitner M, Szczepanski T.
europepmc   +1 more source

Obstructions for Homomorphisms to Odd Cycles in Series‐Parallel Graphs

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT For a graph H $H$, an H $H$‐colouring of a graph G $G$ is a vertex mapping ϕ : V ( G ) → V ( H ) $\phi :V(G)\to V(H)$ such that adjacent vertices are mapped to adjacent vertices. A graph G $G$ is C 2 k + 1 ${C}_{2k+1}$‐critical if G $G$ has no C 2 k + 1 ${C}_{2k+1}$‐colouring but every proper subgraph of G $G$ has a C 2 k + 1 ${C}_{2k+1 ...
Eun‐Kyung Cho   +3 more
wiley   +1 more source

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