Results 31 to 40 of about 1,235,690 (292)

On the Joint Spectral Radius

open access: yes, 2022
minor additions, 15 pages, to be submitted to a Springer volume in memory of Jean ...
openaire   +2 more sources

Network partition via a bound of the spectral radius [PDF]

open access: yes, 2016
12 pages, 10 figures© The author 2016. Published by Oxford University Press. Based on the density of connections between the nodes of high degree, we introduce two bounds of the spectral radius.
Mondragön, RJ, Mondragon-Ceballos, RJ
core   +1 more source

The Spectral Radius of Graphs on Surfaces

open access: yesJournal of Combinatorial Theory, Series B, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mark N. Ellingham, Xiaoya Zha
openaire   +2 more sources

Some inequalities on the spectral radius of nonnegative tensors

open access: yesOpen Mathematics, 2020
The eigenvalues and the spectral radius of nonnegative tensors have been extensively studied in recent years. In this paper, we investigate the analytic properties of nonnegative tensors and give some inequalities on the spectral radius.
Ma Chao   +3 more
doaj   +1 more source

On the Signless Laplacian Spectral Radius of Graphs without Small Books and Intersecting Quadrangles

open access: yesMathematics, 2022
In this paper, we determine the maximum signless Laplacian spectral radius of all graphs which do not contain small books as a subgraph and characterize all extremal graphs. In addition, we give an upper bound of the signless Laplacian spectral radius of
Ming-Zhu Chen   +3 more
doaj   +1 more source

The Aα-spectral radius of complements of bicyclic and tricyclic graphs with n vertices

open access: yesSpecial Matrices, 2021
Recently, the extremal problem of the spectral radius in the class of complements of trees, unicyclic graphs, bicyclic graphs and tricyclic graphs had been studied widely.
Chen Chaohui   +2 more
doaj   +1 more source

Graphs Whose Aα -Spectral Radius Does Not Exceed 2

open access: yesDiscussiones Mathematicae Graph Theory, 2020
Let A(G) and D(G) be the adjacency matrix and the degree matrix of a graph G, respectively. For any real α ∈ [0, 1], we consider Aα (G) = αD(G) + (1 − α)A(G) as a graph matrix, whose largest eigenvalue is called the Aα -spectral radius of G.
Wang Jian Feng   +3 more
doaj   +1 more source

On Extremal Spectral Radii of Uniform Supertrees with Given Independence Number

open access: yesDiscrete Dynamics in Nature and Society, 2022
A supertree is a connected and acyclic hypergraph. Denote by Tm,n,α the set of m-uniform supertrees of order n with independent number α. Focusing on the spectral radius in Tm,n,α, this present completely determines the hypergraphs with maximum spectral ...
Lei Zhang, Haizhen Ren
doaj   +1 more source

The spectral radius of signless Laplacian matrix and sum-connectivity index of graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2022
The sum-connectivity index of a graph G is defined as the sum of weights [Formula: see text] over all edges uv of G, where du and dv are the degrees of the vertices u and v in G, respectively.
A. Jahanbani, S. M. Sheikholeslami
doaj   +1 more source

Second Hyper Zagreb Spectral Radii of Graph Operations

open access: yesScientific Annals of Computer Science
Chemical graph theory is essential for deriving graph spectral radius, especially in quantum chemistry; a significant link exists between eigenvalues and this invariant of spectral graph theory.
Ahmad Bilal, Muhammad Mobeen Munir
doaj   +1 more source

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