Results 1 to 10 of about 1,191,800 (264)

On the least signless Laplacian eigenvalue of a non-bipartite connected graph with fixed maximum degree [PDF]

open access: yesJournal of Inequalities and Applications, 2017
In this paper, we determine the unique graph whose least signless Laplacian eigenvalue attains the minimum among all non-bipartite unicyclic graphs of order n with maximum degree Δ and among all non-bipartite connected graphs of order n with maximum ...
Shu-Guang Guo, Rong Zhang
doaj   +2 more sources

Acyclic 6-Colouring of Graphs with Maximum Degree 5 and Small Maximum Average Degree

open access: yesDiscussiones Mathematicae Graph Theory, 2013
A k-colouring of a graph G is a mapping c from the set of vertices of G to the set {1, . . . , k} of colours such that adjacent vertices receive distinct colours.
Fiedorowicz Anna
doaj   +2 more sources

The maximum likelihood degree of toric varieties [PDF]

open access: yesJournal of Symbolic Computation, 2019
21 pages, 5 ...
Daniel Smolkin   +2 more
exaly   +3 more sources

Diameter and maximum degree in Eulerian digraphs

open access: yesDiscrete Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Peter Dankelmann
exaly   +3 more sources

Wiener index in graphs with given minimum degree and maximum degree [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2021
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 $G$. In this paper we show that the well-known upper bound $\big( \frac{n}{\delta+1}+2\big) {n \choose 2}$ on ...
Peter Dankelmann, Alex Alochukwu
doaj   +1 more source

K-regular decomposable incidence structure of maximum degree [PDF]

open access: yesMathematica Moravica, 2023
This paper discusses incidence structures and their rank. The aim of this paper is to prove that there exists a regular decomposable incidence structure J = (P, B) of maximum degree depending on the size of the set and a predetermined rank.
Stošović Dejan   +2 more
doaj   +1 more source

Proximity, remoteness and maximum degree in graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2022
The average distance of a vertex $v$ of a connected graph $G$ is the arithmetic mean of the distances from $v$ to all other vertices of $G$. The proximity $\pi(G)$ and the remoteness $\rho(G)$ of $G$ are the minimum and the maximum of the average ...
Peter Dankelmann   +2 more
doaj   +1 more source

Neighbor Distinguishing Colorings of Graphs with the Restriction for Maximum Average Degree

open access: yesAxioms, 2023
Neighbor distinguishing colorings of graphs represent powerful tools for solving the channel assignment problem in wireless communication networks. They consist of two forms of coloring: neighbor distinguishing edge coloring, and neighbor distinguishing ...
Jingjing Huo   +3 more
doaj   +1 more source

On the extremal connective eccentricity index among trees with maximum degree [PDF]

open access: yesTransactions on Combinatorics, 2021
The connective eccentricity index (CEI) of a graph $G$ is defined as $\xi^{ce}(G)=\sum_{v \in V(G)}\frac{d_G(v)}{\varepsilon_G(v)}$, where $d_G(v)$ is the degree of $v$ and $\varepsilon_G(v)$ is the eccentricity of $v$. In this paper, we characterize the
Fazal Hayat
doaj   +1 more source

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