Results 21 to 30 of about 26,192 (266)

On two consequences of Berge–Fulkerson conjecture

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
The classical Berge–Fulkerson conjecture states that any bridgeless cubic graph admits a list of six perfect matchings such that each edge of belongs to two of the perfect matchings from the list.
Vahan V. Mkrtchyan, Gagik N. Vardanyan
doaj   +1 more source

On 2-power unicyclic cubic graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2022
In a graph, a cycle whose length is a power of two (that is, 2k) is called a 2-power cycle. In this paper, we show that the existence of an infinite family of cubic graphs which contain only one cycle whose length is a power of 2.
Shariefuddin Pirzada   +2 more
doaj   +1 more source

On almost hypohamiltonian graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2019
A graph $G$ is almost hypohamiltonian (a.h.) if $G$ is non-hamiltonian, there exists a vertex $w$ in $G$ such that $G - w$ is non-hamiltonian, and $G - v$ is hamiltonian for every vertex $v \ne w$ in $G$. The second author asked in [J.
Jan Goedgebeur, Carol T. Zamfirescu
doaj   +1 more source

The minimal and maximal energies of all cubic circulant graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
In recent article, Zhou and Zhou conjectured that among cubic circulant graphs with n vertices the maximum energy occurs whenever the largest number of components is attained.
Ilhan Hacioglu   +2 more
doaj   +1 more source

An Industrial Fault Diagnostic System Based on a Cubic Dynamic Uncertain Causality Graph

open access: yesSensors, 2022
This study presents an industrial fault diagnosis system based on the cubic dynamic uncertain causality graph (cubic DUCG) used to model and diagnose industrial systems without sufficient data for model training.
Xusong Bu   +3 more
doaj   +1 more source

Eccentricity based topological indices of face centered cubic lattice FCC(n)

open access: yesMain Group Metal Chemistry, 2021
Chemical graph theory has become a prime gadget for mathematical chemistry due to its wide range of graph theoretical applications for solving molecular problems.
Shaker Hani   +2 more
doaj   +1 more source

On Transmission Irregular Cubic Graphs of an Arbitrary Order

open access: yesMathematics, 2022
The transmission of a vertex v of a graph G is the sum of distances from v to all the other vertices of G. A transmission irregular graph (TI graph) has mutually distinct vertex transmissions.
Anatoly Yu. Bezhaev, Andrey A. Dobrynin
doaj   +1 more source

On cubical graphs

open access: yesJournal of Combinatorial Theory, Series B, 1975
AbstractIt is frequently of interest to represent a given graph G as a subgraph of a graph H which has some special structure. A particularly useful class of graphs in which to embed G is the class of n-dimensional cubes. This has found applications, for example, in coding theory, data transmission, and linguistics. In this note, we study the structure
Garey, M.R, Graham, R.L
openaire   +2 more sources

The Fan–Raspaud conjecture: A randomized algorithmic approach and application to the pair assignment problem in cubic networks

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2012
It was conjectured by Fan and Raspaud (1994) that every bridgeless cubic graph contains three perfect matchings such that every edge belongs to at most two of them.
Formanowicz Piotr, Tanaś Krzysztof
doaj   +1 more source

Cores, Joins and the Fano-Flow Conjectures

open access: yesDiscussiones Mathematicae Graph Theory, 2018
The Fan-Raspaud Conjecture states that every bridgeless cubic graph has three 1-factors with empty intersection. A weaker one than this conjecture is that every bridgeless cubic graph has two 1-factors and one join with empty intersection.
Jin Ligang   +2 more
doaj   +1 more source

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