Results 21 to 30 of about 1,156,434 (264)

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

Boxicity and maximum degree

open access: yesJournal of Combinatorial Theory, Series B, 2008
An axis-parallel $d$--dimensional box is a Cartesian product $R_1 \times R_2 \times ... \times R_d$ where $R_i$ (for $1 \le i \le d$) is a closed interval of the form $[a_i, b_i]$ on the real line. For a graph $G$, its \emph{boxicity} $\boxi(G)$ is the minimum dimension $d$, such that $G$ is representable as the intersection graph of (axis--parallel ...
Chandran, L Sunil   +2 more
openaire   +3 more sources

Random Graphs with a Fixed Maximum Degree [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2020
We study the component structure of the random graph $G=G_{n,m,d}$. Here $d=O(1)$ and $G$ is sampled uniformly from ${\mathcal G}_{n,m,d}$, the set of graphs with vertex set $[n]$, $m$ edges and maximum degree at most $d$. If $m= n/2$ then we establish a threshold value $ _\star$ such that if $ _\star$ then w.h.p. there is a unique giant component
Frieze, Alan M., Tkocz, Tomasz
openaire   +3 more sources

A Different Short Proof of Brooks’ Theorem

open access: yesDiscussiones Mathematicae Graph Theory, 2014
Lovász gave a short proof of Brooks’ theorem by coloring greedily in a good order. We give a different short proof by reducing to the cubic case.
Rabern Landon
doaj   +1 more source

Low-diameter topic-based pub/sub overlay network construction with minimum–maximum node degree [PDF]

open access: yesPeerJ Computer Science, 2021
In the construction of effective and scalable overlay networks, publish/subscribe (pub/sub) network designers prefer to keep the diameter and maximum node degree of the network low.
Semih Yumusak   +3 more
doaj   +2 more sources

Extremal Statistics on Non-Crossing Configurations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
We obtain several properties of extremal statistics in non-crossing configurations with n vertices. We prove that the maximum degree and the largest component are of logarithmic order, and the diameter is of order $\sqrt{n}$.
Anna Mier, Marc Noy
doaj   +1 more source

Bounding the maximum likelihood degree [PDF]

open access: yesMathematical Research Letters, 2015
v2: final version, to appear in Math.
Budur, Nero, Wang, Botong
openaire   +2 more sources

Bicyclic Graphs with the Second-Maximum and Third-Maximum Degree Resistance Distance

open access: yesJournal of Mathematics, 2021
Let G=V,E be a connected graph. The resistance distance between two vertices u and v in G, denoted by RGu,v, is the effective resistance between them if each edge of G is assumed to be a unit resistor.
Wenjie Ning, Kun Wang, Hassan Raza
doaj   +1 more source

Equitable Coloring and the Maximum Degree

open access: yesEuropean Journal of Combinatorics, 1994
The equitable \(h\)-coloring conjecture says that a connected graph \(G\) is equitable \(h(G)\)-colorable if it is different from \(K_ n\), \(C_{2n+1}\) and \(K_{2n+1,2n+1}\) for all \(n\geq 1\). This conjecture is proved for graphs \(G\) with \(h(G)\geq | G|/2\) or \(h(G)\leq 3\), where \(h(G)\) is the maximum vertex degree of \(G\).
Chen, Bor-Liang   +2 more
openaire   +1 more source

Reducing the maximum degree of a graph by deleting vertices: the extremal cases

open access: yesTheory and Applications of Graphs, 2018
Let $\lambda(G)$ denote the smallest number of vertices that can be removed from a non-empty graph $G$ so that the resulting graph has a smaller maximum degree. In a recent paper, we proved that if $n$ is the number of vertices of $G$, $k$ is the maximum
Peter Borg, Kurt Fenech
doaj   +1 more source

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