Results 21 to 30 of about 15,436 (257)

Irregularity Strength of Regular Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2008
Let $G$ be a simple graph with no isolated edges and at most one isolated vertex. For a positive integer $w$, a $w$-weighting of $G$ is a map $f:E(G)\rightarrow \{1,2,\ldots,w\}$. An irregularity strength of $G$, $s(G)$, is the smallest $w$ such that there is a $w$-weighting of $G$ for which $\sum_{e:u\in e}f(e)\neq\sum_{e:v\in e}f(e)$ for all pairs of
openaire   +2 more sources

The irregularity strength of circulant graphs

open access: yesDiscrete Mathematics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Baril, Jean-Luc   +2 more
openaire   +2 more sources

The Influence of Fiber Length Distribution on Yarn Properties Based on Fiber Random Arrangement in the Yarn

open access: yesJournal of Natural Fibers, 2021
This study discussed the influence of fiber length distribution on yarn qualities (yarn irregularity and strength) based on simulation on fiber random arrangement.
Zhan Jiang   +4 more
doaj   +1 more source

Total vertex irregularity strength of trees with maximum degree five

open access: yesElectronic Journal of Graph Theory and Applications, 2018
In 2010, Nurdin, Baskoro, Salman and Gaos conjectured that the total vertex irregularity strength of any tree T is determined only by the number of vertices of degrees 1, 2 and 3 in T. This paper will confirm this conjecture by considering all trees with
S. Susilawati   +2 more
doaj   +1 more source

The irregularity strength of tP3

open access: yesDiscrete Mathematics, 1991
The irregularity strength \(s(G)\) of a simple graph \(G\) is the smallest number such that the edges of \(G\) may be assigned weights \(\leq s(G)\) in such a way as to obtain distinct weight sums at each vertex. It is shown by elementary arguments in additive number theory that for \(G=tP_ 3\), the disjoint union of \(t\) paths of length 3, \([(15t-1)/
Kinch, Lael, Lehel, Jenő
openaire   +2 more sources

The Modular Irregularity Strength of C_n⊙mK_1

open access: yesInPrime, 2022
Let G(V, E) be a graph with order n with no component of order 2. An edge k-labeling α: E(G) →{1,2,…,k} is called a modular irregular k-labeling of graph G if the corresponding modular weight function wt_ α:V(G) → Z_n defined by wt_ α(x) =Ʃ_(xyϵE(G)) α ...
Putu Kartika Dewi
doaj   +1 more source

The irregularity strength of tKp

open access: yesDiscrete Mathematics, 1995
The irregularity strength of a simple graph is the smallest integer for which the edges may be assigned weights not exceeding it, such that the weight sums of adjacent edges are different at all vertices. A general formula is obtained for the irregularity strength of disjoint unions of identical complete graphs.
Jendroľ, Stanislav, Tkáč, Michal
openaire   +2 more sources

Irregularity strength of trees

open access: yesDiscrete Mathematics, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Amar, D., Togni, O.
openaire   +1 more source

On irregularity strength of disjoint union of friendship graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2013
We investigate the vertex total and edge total modication of the well-known irregularity strength of graphs. We have determined the exact values of the total vertex irregularity strength and the total edge irregularity strength of a disjoint union of ...
Ali Ahmad, Martin Baca, Muhammad Numan
doaj   +1 more source

Irregularity strength of digraphs

open access: yesDiscrete Mathematics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ferrara, Mike   +3 more
openaire   +2 more sources

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