Results 11 to 20 of about 5,891 (239)

Group twin coloring of graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
For a given graph $G$, the least integer $k\geq 2$ such that for every Abelian group $\mathcal{G}$ of order $k$ there exists a proper edge labeling $f:E(G)\rightarrow \mathcal{G}$ so that $\sum_{x\in N(u)}f(xu)\neq \sum_{x\in N(v)}f(xv)$ for each edge ...
Sylwia Cichacz, Jakub Przybyło
doaj   +1 more source

New Bipartite Graph Techniques for Irregular Data Redistribution Scheduling

open access: yesAlgorithms, 2019
For many parallel and distributed systems, automatic data redistribution improves its locality and increases system performance for various computer problems and applications.
Qinghai Li, Chang Wu Yu
doaj   +1 more source

Coloring Groups [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
We introduce coloring groups, which are permutation groups obtained from a proper edge coloring of a graph. These groups generalize the generalized toggle groups of Striker (which themselves generalize the toggle groups introduced by Cameron and Fon-der ...
Ben Adenbaum, Alexander Wilson
doaj   +1 more source

Consecutive colorings of the edges of general graphs

open access: yesDiscrete Mathematics, 2001
A consecutive (or interval) edge-coloring of a graph \(G = (V, E)\) is a map \(f : E \rightarrow \mathbb{N}\) such that the colors of edges at each vertex are distinct and form an interval of integers. It follows from the well-known NP-completenes result for edge-colorings that deciding whether a graph is consecutive edge-colorable is NP-complete.
Krzysztof Giaro   +2 more
openaire   +1 more source

Colored motifs reveal computational building blocks in the C. elegans brain. [PDF]

open access: yesPLoS ONE, 2011
BACKGROUND: Complex networks can often be decomposed into less complex sub-networks whose structures can give hints about the functional organization of the network as a whole.
Jifeng Qian   +2 more
doaj   +1 more source

A generalization of interval edge-colorings of graphs

open access: yesDiscrete Applied Mathematics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Petros A. Petrosyan   +2 more
openaire   +2 more sources

On a Total Version of 1-2-3 Conjecture

open access: yesDiscussiones Mathematicae Graph Theory, 2020
A total k-coloring of a graph G is a coloring of vertices and edges of G using colors of the set {1, . . . , k}. These colors can be used to distinguish adjacent vertices of G. There are many possibilities of such a distinction.
Baudon Olivier   +5 more
doaj   +1 more source

The Black-and-White Coloring Problem on Chordal Graphs

open access: yesJournal of Graph Algorithms and Applications, 2012
Given a graph G and positive integers b and w, the black-and-white coloring problem asks about the existence of a partial vertex-coloring of G, with b vertices colored black and w white, such that there is no edge between a black and a white vertex. This
Shira Zucker
doaj   +1 more source

Edge-state-induced correlation effects in two-color high-harmonic generation [PDF]

open access: yesPhysical Review A, 2020
6 pages, 4 ...
Jensen, Simon Vendelbo Bylling   +2 more
openaire   +4 more sources

A Note on Neighbor Expanded Sum Distinguishing Index

open access: yesDiscussiones Mathematicae Graph Theory, 2017
A total k-coloring of a graph G is a coloring of vertices and edges of G using colors of the set [k] = {1, . . . , k}. These colors can be used to distinguish the vertices of G. There are many possibilities of such a distinction.
Flandrin Evelyne   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy