Results 51 to 60 of about 57,717 (241)

On mean distance and girth

open access: yesDiscrete Applied Mathematics, 2010
this paper has been withdrawn because it has been ...
Siham Bekkai, Mekkia Kouider
openaire   +2 more sources

Girth, words and diameter [PDF]

open access: yes, 2019
We study the girth of Cayley graphs of finite classical groups G on random sets of generators. Our main tool is an essentially best possible bound we obtain on the probability that a given word w takes the value 1 when evaluated in G in terms of the ...
Liebeck, Martin, Shalev, Aner
core   +1 more source

Modèle de croissance pour les plantations de mélèzes [PDF]

open access: yesBiotechnologie, Agronomie, Société et Environnement, 2003
Growth model forlarch in pure and even-aged stands. Adistance independent tree growth model has been determined forpure and even-aged larch stands (Larix sp.) growing in Walloon Region (South Belgium).
Rondeux J., Lejeune P., Pauwels D.
doaj  

Girth-Based Sequential-Recovery LRCs

open access: yesIEEE Access, 2022
In this paper, we prove that a linear block code with girth $2(t+1)$ is a $t$ -sequential-recovery locally repairable codes (LRCs) with locality $r$ if its parity-check matrix has column weight at least 2 and row weight at most $r+1$ . This gives a
Zhi Jing, Hong-Yeop Song
doaj   +1 more source

Spectra of Orders for k-Regular Graphs of Girth g

open access: yesDiscussiones Mathematicae Graph Theory, 2021
A (k, g)-graph is a k-regular graph of girth g. Given k ≥ 2 and g ≥ 3, infinitely many (k, g)-graphs of infinitely many orders are known to exist. Our goal, for given k and g, is the classification of all orders n for which a (k, g)-graph of order n ...
Jajcay Robert, Raiman Tom
doaj   +1 more source

On the girth of finitely generated groups [PDF]

open access: yes, 2003
We study the notion of girth for finitely generated groups. It is proved that if the girth is ‘small’ then the group necessarily satisfies a law. A general construction is presented which provides examples of groups with infinite girth not containing ...
Akhmedov, Azer
core   +1 more source

Extremal Graphs for Sombor Index with Given Parameters

open access: yesAxioms, 2023
In this paper, we present the upper and lower bounds on Sombor index SO(G) among all connected graphs (respectively, connected bipartite graphs). We give some sharp lower and upper bounds on SO(G) among connected graphs in terms of some parameters ...
Wanping Zhang, Jixiang Meng, Na Wang
doaj   +1 more source

Stock-scion interactions on growth and rubber yield of Hevea brasiliensis Interação porta-enxerto x enxerto sobre vigor e produção de borracha de Hevea brasiliensis

open access: yesScientia Agricola, 2007
Rubber tree cultivation [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.] uses mostly the budding propagation method, however the expected stand uniformity due to the use of vegetative propagation is theoretical, since high variation for yield ...
Átila Bento Beleti Cardinal   +2 more
doaj   +1 more source

Wiener index in graphs given girth, minimum, and maximum degrees

open access: yesTheory and Applications of Graphs, 2023
Let $G$ be a connected graph of order $n$. The Wiener index $W(G)$ of $G$ is the sum of the distances between all unordered pairs of vertices of $G$.
Fadekemi J. Osaye   +3 more
doaj   +1 more source

Characterization of classes of graphs with large general position number

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Getting inspired by the famous no-three-in-line problem and by the general position subset selection problem from discrete geometry, the same is introduced into graph theory as follows.
Elias John Thomas, Ullas Chandran S. V.
doaj   +1 more source

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