Results 21 to 30 of about 2,151,737 (304)

The monadic second-order logic of graphs XVI : Canonical graph decompositions [PDF]

open access: yesLogical Methods in Computer Science, 2006
This article establishes that the split decomposition of graphs introduced by Cunnigham, is definable in Monadic Second-Order Logic.This result is actually an instance of a more general result covering canonical graph decompositions like the modular ...
Bruno Courcelle
doaj   +1 more source

Decomposition of complete graphs into small graphs [PDF]

open access: yesOpuscula Mathematica, 2010
In 1967, A. Rosa proved that if a bipartite graph \(G\) with \(n\) edges has an \(\alpha\)-labeling, then for any positive integer \(p\) the complete graph \(K_{2np+1}\) can be cyclically decomposed into copies of \(G\).
Dalibor Froncek
doaj   +1 more source

Decomposition of product graphs into paths and stars on five vertices

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let Sk and Kk respectively denote a path, a star and a complete graph on k vertices. By a -decomposition of a graph G, we mean a decomposition of G into r copies of and s copies of In this paper, it shown that the graph admits a -decomposition if and ...
M. Ilayaraja   +2 more
doaj   +1 more source

α_{2}-labeling of graphs [PDF]

open access: yesOpuscula Mathematica, 2009
We show that if a graph \(G\) on \(n\) edges allows certain special type of rosy labeling (a.k.a. \(\rho\)-labeling), called \(\alpha_2\)-labeling, then for any positive integer \(k\) the complete graph \(K_{2nk+1}\) can be decomposed into copies of \(G\)
Dalibor Fronček
doaj   +1 more source

Note on decompositions based on the vertex-removing synchronised graph product

open access: yesElectronic Journal of Graph Theory and Applications, 2022
Recently, we have introduced two graph-decomposition theorems based on a new graph product, motivated by applications in the context of synchronising periodic real-time processes. This vertex-removing synchronised product (VRSP) is based on modifications
Antoon Hendrik Boode
doaj   +1 more source

The Spectrum Problem for the Connected Cubic Graphs of Order 10

open access: yesDiscussiones Mathematicae Graph Theory, 2021
We show that if G is a connected cubic graph of order 10, then there exists a G-decomposition of Kv if and only if v ≣ 1 or 10 (mod 15) except when v = 10 and G is one of 5 specific graphs.
Adams Peter   +3 more
doaj   +1 more source

Some results on Steiner decomposition number of graphs

open access: yesKuwait Journal of Science, 2023
Let $G$ be a connected graph with Steiner number $s(G)$. A decomposition $\pi=\{G_1, G_2,..., G_n\}$ is said to be a Steiner decomposition if $s(G_i)=s(G)$ for all $i\:(1\leq i\leq n)$. The maximum cardinality obtained for the Steiner decomposition $\pi$
E.Ebin Raja Merly, M.Mahiba
doaj   +1 more source

TD-H2H: Shortest Path Query on Time-Dependent Graphs [PDF]

open access: yesJisuanji kexue yu tansuo, 2023
A shortest path query on road networks is a fundamental problem, which has been studied widely. Existing studies usually model road networks as a static graph and query the path with the shortest distance between given vertices.
LI Xinling, WANG Yishu, YUAN Ye, GU Xiang, WANG Guoren
doaj   +1 more source

Hyperspectral Image Super-Resolution Algorithm Based on Graph Regular Tensor Ring Decomposition

open access: yesRemote Sensing, 2023
This paper introduces a novel hyperspectral image super-resolution algorithm based on graph-regularized tensor ring decomposition aimed at resolving the challenges of hyperspectral image super-resolution.
Shasha Sun   +5 more
doaj   +1 more source

Decomposition of Graphs on Surfaces

open access: yesJournal of Combinatorial Theory, Series B, 1997
For \(G= (V,E)\) an Eulerian graph imbedded on a triangulizable surface \(S\), \(\text{mincr}(G, D)\) denotes the minimum number of intersections of \(G\) and \(D'\) (counting multiplicities), where \(D'\) ranges over all closed curves freely homotopic to \(D\) and not intersecting \(V\).
de Graaf, M., Schrijver, A.
openaire   +5 more sources

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