Results 21 to 30 of about 7,663 (277)

Pareto Optimality and Strategy Proofness in Group Argument Evaluation (Extended Version) [PDF]

open access: yes, 2017
An inconsistent knowledge base can be abstracted as a set of arguments and a defeat relation among them. There can be more than one consistent way to evaluate such an argumentation graph.
Awad, Edmond   +4 more
core   +5 more sources

Harmonic labeling of graphs

open access: yesDiscrete Mathematics, 2013
Which graphs admit an integer value harmonic function which is injective and surjective onto $\Z$? Such a function, which we call harmonic labeling, is constructed when the graph is the $\Z^2$ square grid. It is shown that for any finite graph $G$ containing at least one edge, there is no harmonic labeling of $ G \times \Z$.
Benjamini, Itai   +3 more
openaire   +2 more sources

All trees are six-cordial [PDF]

open access: yes, 2017
For any integer $k>0$, a tree $T$ is $k$-cordial if there exists a labeling of the vertices of $T$ by $\mathbb{Z}_k$, inducing a labeling on the edges with edge-weights found by summing the labels on vertices incident to a given edge modulo $k$ so that ...
Driscoll, Keith   +2 more
core   +2 more sources

Gradual supermagic graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
A graph is called supermagic if it admits a labeling of the edges by pairwise different consecutive positive integers such that the sum of the labels of the edges incident with a vertex is independent of the particular vertex.
Jaroslav Ivančo
doaj   +1 more source

Enumeration Of Labelled Graphs [PDF]

open access: yesCanadian Journal of Mathematics, 1956
1. Introduction. The number of connected linear graphs having V vertices labelled 1, … , V and λ (unlabelled) lines is found below. Similar formulas are found for graphs in which slings, lines “in parallel,” or both are allowed and for directed graphs with or without slings or parallel lines.
openaire   +2 more sources

Langford sequences and a product of digraphs [PDF]

open access: yes, 2015
Skolem and Langford sequences and their many generalizations have applications in numerous areas. The $\otimes_h$-product is a generalization of the direct product of digraphs. In this paper we use the $\otimes_h$-product and super edge-magic digraphs to
López, Susana-Clara   +1 more
core   +4 more sources

Parallelism Detection Using Graph Labelling

open access: yesLobachevskii Journal of Mathematics, 2022
Usage of multiprocessor and multicore computers implies parallel programming. Tools for preparing parallel programs include parallel languages and libraries as well as parallelizing compilers and convertors that can perform automatic parallelization. The basic approach for parallelism detection is analysis of data dependencies and properties of program
Telegin, P. N.   +3 more
openaire   +2 more sources

Series-Parallel Operations with Alpha-Graphs

open access: yesTheory and Applications of Graphs, 2019
Among difference vertex labelings of graphs, $\alpha$-labelings are the most restrictive one. A graph is an $\alpha$-graph if it admits an $\alpha$-labeling.
Christian Barrientos, Sarah Minion
doaj   +1 more source

Radio Number of Hamming Graphs of Diameter 3

open access: yesTheory and Applications of Graphs, 2022
For $G$ a simple, connected graph, a vertex labeling $f:V(G)\to \Z_+$ is called a \emph{radio labeling of $G$} if it satisfies $|f(u)-f(v)|\geq\diam(G)+1-d(u,v)$ for all distinct vertices $u,v\in V(G)$.
Jason DeVito   +2 more
doaj   +1 more source

Evacuation of labelled graphs

open access: yesDiscrete Mathematics, 1994
In this note, Schützenberger's notion of evacuation of Young tableaux [\textit{M. P. Schützenberger}, Math. Scand. 12, 117-128 (1963; Zbl 0216.302)] and of naturally labelled posets [\textit{M. P. Schützenberger}, Discrete Math. 2, 73-94 (1972; Zbl 0279.06001)] are extended to labelled graphs.
MALVENUTO, Claudia, REUTENAUER C.
openaire   +2 more sources

Home - About - Disclaimer - Privacy