Results 261 to 270 of about 9,569,640 (309)

Graph energy based on the eccentricity matrix

open access: yesDiscrete Mathematics, 2019
The eccentricity matrix E ( G ) of a graph G is derived from the distance matrix by keeping for each row and each column only the eccentricities. The E -eigenvalues of a graph G are those of its eccentricity matrix E ( G ) , and the eccentricity energy ...
Jianfeng Wang, Lu Lu, Milan Randić
exaly   +2 more sources

From Ultimate Energy to Graph Energies

MATCH – Communications in Mathematical and in Computer Chemistry, 2023
A lower bound is given for the ultimate energy, which is applicable to all graph energies. The extremal characterization is provided for the energy and Laplacian energy when the graph is connected.
Cai, Jin, Zhou, Bo
openaire   +1 more source

What is the meaning of the graph energy after all? [PDF]

open access: yesDiscrete Applied Mathematics, 2017
For a simple graph G = V , E with eigenvalues of the adjacency matrix λ 1 ≥ λ 2 ≥ ⋯ ≥ λ n , the energy of the graph is defined by E G = ∑ j = 1 n | λ j | .
Ernesto Estrada, Michele Benzi
exaly   +2 more sources

Maximal Energy Bipartite Graphs

Graphs and Combinatorics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Koolen, Jack H., Moulton, Vincent
openaire   +3 more sources

Phased graphs and graph energies

Journal of Mathematical Chemistry, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Klein, Douglas J.   +1 more
openaire   +1 more source

Comparative analysis of protein primary sequences with graph energy

Physica A: Statistical Mechanics and Its Applications, 2015
Yusen Zhang
exaly   +2 more sources

A lower bound for graph energy

Linear and multilinear algebra, 2018
The energy of a graph G is the sum of the absolute values of all eigenvalues of G. More recently, the authors of Wong, Wang and Chu [Lower bounds of graph energy in terms of matching number. Linear Algebra Appl.
Qi Zhou, Dein Wong, Dongqi Sun
semanticscholar   +1 more source

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