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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

Bounding the maximum likelihood degree [PDF]

open access: yesMathematical Research Letters, 2015
Maximum likelihood estimation is a fundamental computational problem in statistics. In this note, we give a bound for the maximum likelihood degree of algebraic statistical models for discrete data.
Budur, Nero, Wang, Botong
core   +3 more sources

Local Boxicity, Local Dimension, and Maximum Degree

open access: yesDiscrete Mathematics, 2019
In this paper, we focus on two recently introduced parameters in the literature, namely `local boxicity' (a parameter on graphs) and `local dimension' (a parameter on partially ordered sets). We give an `almost linear' upper bound for both the parameters
Majumder, Atrayee, Mathew, Rogers
core   +3 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

Maximum likelihood degree of surjective rational maps

open access: yesArnold Mathematical Journal, 2018
We compute the ML degree associated with a surjective rational map.Comment: 2 pages; ps-format is most user ...
Karzhemanov, Ilya
core   +2 more sources

On chromatic vertex stability of 3-chromatic graphs with maximum degree 4 [PDF]

open access: greenDiscrete Mathematics Letters, 2022
Martin Knor   +2 more
doaj   +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

Fractional Chromatic Number, Maximum Degree, and Girth [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2021
We introduce a new method for computing bounds on the independence number and fractional chromatic number of classes of graphs with local constraints, and apply this method in various scenarios. We establish a formula that generates a general upper bound for the fractional chromatic number of triangle-free graphs of maximum degree~$ \ge 3$. This upper
Pirot, François   +1 more
openaire   +4 more sources

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

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