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Factorisation properties of the strong product [PDF]

open access: yes, 2010
We investigate a number of factorisation conditions in the frame- work of sets of probability measures, or coherent lower previsions, with finite referential spaces.
E. Miranda   +5 more
core   +3 more sources

Gromov hyperbolicity in strong product graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2013
If X is a geodesic metric space and x1; x2; x3 2 X, a geodesic triangle T = fx1; x2; x3g is the union of the three geodesics [x1x2], [x2x3] and [x3x1] in X.
Carballosa, Walter   +3 more
core   +6 more sources

L(2,1)-Labeling of the Strong Product of Paths and Cycles [PDF]

open access: yesThe Scientific World Journal, 2014
An L(2,1)-labeling of a graph G=(V,E) is a function f from the vertex set V(G) to the set of nonnegative integers such that the labels on adjacent vertices differ by at least two and the labels on vertices at distance two differ by at least one. The span
Zehui Shao, Aleksander Vesel
doaj   +2 more sources

Some Applications of Strong Product [PDF]

open access: yesMathematics Interdisciplinary Research, 2018
Let G and H be graphs. The strong product GH of graphs G and H is the graph with vertex set V(G)V(H) and u=(u1, v1) is adjacent with v= (u2, v2) whenever (v1 = v2 and u1 is adjacent with u2) or (u1 = u2 and v1 is adjacent with v2) or (u1 is adjacent ...
Mostafa Tavakoli   +2 more
doaj   +2 more sources

The Subset-Strong Product of Graphs

open access: yesAnnales Mathematicae Silesianae
In this paper, we introduce the subset-strong product of graphs and give a method for calculating the adjacency spectrum of this product. In addition, exact expressions for the first and second Zagreb indices of the subset-strong products of two graphs ...
Eliasi Mehdi
doaj   +3 more sources

Operations on Neutrosophic Vague Graphs [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
Neutrosophic graph is a mathematical tool to hold with imprecise and unspecified data. In this manuscript, the operations on neutrosophic vague graphs are introduced. Moreover, Cartesian product, lexicographic product, cross product, strong product and
S. Satham Hussain   +3 more
doaj   +1 more source

A digital Jordan surface theorem with respect to a graph connectedness

open access: yesOpen Mathematics, 2023
After introducing a graph connectedness induced by a given set of paths of the same length, we focus on the 2-adjacency graph on the digital line Z{\mathbb{Z}} with a certain set of paths of length nn for every positive integer nn.
Šlapal Josef
doaj   +1 more source

Exact square coloring of graphs resulting from some graph operations and products

open access: yesAKCE International Journal of Graphs and Combinatorics, 2022
A vertex coloring of a graph [Formula: see text] is called an exact square coloring of G if any pair of vertices at distance 2 receive distinct colors.
Priyamvada, B. S. Panda
doaj   +1 more source

Wiener index of strong product of graphs [PDF]

open access: yesOpuscula Mathematica, 2018
The Wiener index of a connected graph \(G\) is the sum of distances between all pairs of vertices of \(G\). The strong product is one of the four most investigated graph products.
Iztok Peterin, Petra Žigert Pleteršek
doaj   +1 more source

On the Packing Partitioning Problem on Directed Graphs

open access: yesMathematics, 2021
This work is aimed to continue studying the packing sets of digraphs via the perspective of partitioning the vertex set of a digraph into packing sets (which can be interpreted as a type of vertex coloring of digraphs) and focused on finding the minimum ...
Babak Samadi, Ismael G. Yero
doaj   +1 more source

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