Results 51 to 60 of about 2,192,848 (347)

The Balanced Decomposition Number of TK4 and Series-Parallel Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2013
A balanced colouring of a graph G is a colouring of some of the vertices of G with two colours, say red and blue, such that there is the same number of vertices in each colour. The balanced decomposition number f(G) of G is the minimum integer s with the
Fujita Shinya, Liu Henry
doaj   +1 more source

Detour self-decomposition of corona product of graphs

open access: yesRatio Mathematica, 2023
Decomposition of a graph G is the collection of edge-disjoint subgraphs of G. The longest distance between any two vertices of G is its detour distance.
E Ebin Raja Merly, E Anlin Bena
doaj   +1 more source

Rigidity of graph products of abelian groups

open access: yes, 2007
We show that if $G$ is a group and $G$ has a graph-product decomposition with finitely-generated abelian vertex groups, then $G$ has two canonical decompositions as a graph product of groups: a unique decomposition in which each vertex group is a ...
Gutierrez, Mauricio, Piggott, Adam
core   +1 more source

Even-cycle decompositions of graphs with no odd-$K_4$-minor

open access: yes, 2017
An even-cycle decomposition of a graph G is a partition of E(G) into cycles of even length. Evidently, every Eulerian bipartite graph has an even-cycle decomposition.
Huynh, Tony   +2 more
core   +1 more source

Chain decompositions of graphs [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1985
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Fine-Grained Video-Text Retrieval With Hierarchical Graph Reasoning [PDF]

open access: yesComputer Vision and Pattern Recognition, 2020
Cross-modal retrieval between videos and texts has attracted growing attentions due to the rapid emergence of videos on the web. The current dominant approach is to learn a joint embedding space to measure cross-modal similarities.
Shizhe Chen, Yida Zhao, Qin Jin, Qi Wu
semanticscholar   +1 more source

Decomposition of perfect graphs

open access: yesJournal of Combinatorial Theory, Series B, 1987
In this paper we describe general composition and decomposition schemes for perfect graphs, which covers almost all recent results in this area, e.g. the amalgam and the 2-amalgam split. Our approach is based on the consideration of induced cycles and their complements in perfect graphs (as opposed to the consideration of cycles for defining ...
openaire   +2 more sources

On Hamilton Decompositions of Line Graphs of Non-Hamiltonian Graphs and Graphs without Separating Transitions [PDF]

open access: yes, 2017
In contrast with Kotzig's result that the line graph of a $3$-regular graph $X$ is Hamilton decomposable if and only if $X$ is Hamiltonian, we show that for each integer $k\geq 4$ there exists a simple non-Hamiltonian $k$-regular graph whose line graph ...
Bryant, Darryn   +2 more
core   +1 more source

Altered Dynamic Functional Network Connectivity in Post‐Stroke Aphasia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Previous studies examining post‐stroke aphasia (PSA) patients via resting‐state functional magnetic resonance imaging (rs‐fMRI) have predominantly focused on static functional connectivity. In contrast, the current investigation aims to elucidate the alterations in dynamic functional network connectivity (dFNC) among PSA patients ...
Guihua Xu   +6 more
wiley   +1 more source

On the decomposition of a graph into stars

open access: yesDiscrete Mathematics, 1981
It is known that whenever υ(υ−1) ≡ 0 (mod 2m) and υ⩾2m, the complete graph Kυ can be decomposed into edge disjoint, m-stars [1,2]. In this paper we prove that Kυ can be decomposed into any given sequence of stars Sm1, Sm2,…, Smk if ∑mi=(2υ) and mi⩽1/2υ. Further we generalize this result to the decomposition of not necessarily complete graphs.
openaire   +2 more sources

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