Results 51 to 60 of about 2,374 (146)
Veterinary Dermatology, Volume 35, Issue 1, Page 15-24, February 2024.Background – Canine atopic dermatitis (cAD) is a common, complex and multifactorial disease involving, among others, genetic predisposition, environmental factors and allergic sensitisation. Objective – This review summarises the current evidence on the role of genetic and environmental factors and allergic sensitisation in the pathogenesis of cAD ...
Patrick Hensel +13 more
wiley +1 more source
Seidel energy of complete multipartite graphs
Special Matrices, 2021 The Seidel energy of a simple graph G is the sum of the absolute values of the eigenvalues of the Seidel matrix of G. In this paper we study the Seidel eigenvalues of complete multipartite graphs and find the exact value of the Seidel energy of the ...
Oboudi Mohammad Reza
doaj +1 more source
The distance signatures of the incidence graphs of affine resolvable designs
, 2016 In this note, we determined the distance signatures of the incidence matrices of affine resolvable designs.
Ma, Jianmin
core +1 more source
Some inequalities on the skew-spectral radii of oriented graphs
, 2012 Let G be a simple graph and Gσ be an oriented graph obtained from G by assigning a direction to each edge of G. The adjacency matrix of G is A(G) and the skew-adjacency matrix of Gσ is S(Gσ).
Guang-Hui Xu
semanticscholar +1 more source
Equality in Wielandt's eigenvalue inequality
, 2015 In this paper we give necessary and sufficient conditions for the equality case in Wielandt's eigenvalue inequality.Comment: 6 pages, few typos are ...
Friedland, Shmuel
core +2 more sources
The non-negative spectrum of a digraph
Open Mathematics, 2020 Given the adjacency matrix A of a digraph, the eigenvalues of the matrix AAT constitute the so-called non-negative spectrum of this digraph. We investigate the relation between the structure of digraphs and their non-negative spectra and associated ...
Alomari Omar +2 more
doaj +1 more source
On graphs with minimal distance signless Laplacian energy
Acta Universitatis Sapientiae: Mathematica, 2021 For a simple connected graph G of order n having distance signless Laplacian eigenvalues ρ1Q≥ρ2Q≥⋯≥ρnQ\rho _1^Q \ge \rho _2^Q \ge \cdots \ge \rho _n^Q, the distance signless Laplacian energy DSLE(G) is defined as DSLE(G)=∑i=1n|ρiQ-2W(G)n|DSLE\left( G ...
Pirzada S. +3 more
doaj +1 more source
NONLINEAR RANK-ONE MODIFICATION OF THE SYMMETRIC EIGENVALUE PROBLEM *
, 2010 Nonlinear rank-one modiflcation of the symmetric eigenvalue problem arises from eigenvibrations of mechanical structures with elastically attached loads and calculation of the propagation modes in optical flber.
Xin Huang, Z. Bai, Yangfeng Su
semanticscholar +1 more source
M-matrix and inverse M-matrix extensions
Special Matrices, 2020 A class of matrices that simultaneously generalizes the M-matrices and the inverse M-matrices is brought forward and its properties are reviewed. It is interesting to see how this class bridges the properties of the matrices it generalizes and provides a
McDonald J.J. +6 more
doaj +1 more source
Open Mathematics, 2023 In this article, we develop an efficient Legendre-Galerkin approximation based on a reduced-dimension scheme for the fourth-order equation with singular potential and simply supported plate (SSP) boundary conditions in a circular domain. First, we deduce
Zou Shuimu, Zhang Jun
doaj +1 more source