Results 21 to 30 of about 130 (125)

Diagonal dominance and invertibility of matrices

Special Matrices, 2023
A weakly diagonally dominant matrix may or may not be invertible. We characterize, in terms of combinatorial structure and sign pattern when such a matrix is invertible, which is the common case. Examples are given.
Johnson Charles Royal, Marijuán Carlos, Pisonero Miriam   +2 more
doaj   +1 more source

Matrix Manipulations for Properties of Pell p-Numbers and their Generalizations

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020
In this paper, we define the Pell-Pell p-sequence and then we discuss the connection of the Pell-Pell p-sequence with Pell and Pell p-sequences. Also, we provide a new Binet formula and a new combinatorial representation of the Pell-Pell p-numbers by the
Erdağ Özgür, Deveci Ömür, Shannon Anthony G.   +2 more
doaj   +1 more source

The bipartite Laplacian matrix of a nonsingular tree

Special Matrices, 2023
For a bipartite graph, the complete adjacency matrix is not necessary to display its adjacency information. In 1985, Godsil used a smaller size matrix to represent this, known as the bipartite adjacency matrix.
Bapat Ravindra B., Jana Rakesh, Pati Sukanta   +2 more
doaj   +1 more source

Determinants of some special matrices over commutative finite chain rings

Special Matrices, 2020
Circulant matrices over finite fields and over commutative finite chain rings have been of interest due to their nice algebraic structures and wide applications. In many cases, such matrices over rings have a closed connection with diagonal matrices over
Jitman Somphong
doaj   +1 more source

EXPLICIT CAPELLI IDENTITIES FOR SKEW SYMMETRIC MATRICES

, 2002
The main purpose of this paper is to obtain an explicit Capelli identity relating skew-symmetric matrices under the action of the general linear group $GL_N$.
Kenji Kinoshita, Masato Wakayama
core   +1 more source

Projecting future damage costs of non‐native species using combined dynamical and cost–density equations

Ecological Applications, Volume 36, Issue 5, July 2026.
Abstract Biological invasions threaten biodiversity, economic stability, and public health, exacerbated by intensive global trade and transport. The economic costs of these invasions have exceeded US$2 trillion globally and continue to increase. Although past invasion costs have been described across various contexts, there are few robust projections ...
Danish A. Ahmed, Corey J. A. Bradshaw, Noor Tahat, Emma J. Hudgins, Pierre Courtois, Philip E. Hulme, Yuya Watari, Ali Serhan Tarkan, Ismael Soto, Phillip J. Haubrock, Paride Balzani, Ross N. Cuthbert   +11 more
wiley   +1 more source

Characteristic polynomial, determinant and inverse of a Fibonacci-Sylvester-Kac matrix

Special Matrices, 2021
In this paper, we consider a new Sylvester-Kac matrix, i.e., Fibonacci-Sylvester-Kac matrix. We discuss the eigenvalues, eigenvectors and characteristic polynomial of this matrix in two categories based on whether the Fibonacci-Sylvester-Kac matrix order
Jiang Zhaolin, Zheng Yanpeng, Li Tianzi
doaj   +1 more source

Assessing D‐Squame as a Minimally Invasive Technique to Evaluate the Cutaneous Immune Response mRNA in a Dog Model of Canine Atopic Dermatitis

Veterinary Dermatology, Volume 37, Issue 3, Page 353-364, June 2026.
ABSTRACT Background Canine atopic dermatitis (cAD) is a multifactorial, inherited skin disease, estimated to affect ≤ 15% of dogs. Studies of skin messenger mRNA in cAD currently use invasive methods, including blood sampling and biopsy collection, whilst advances in human atopic dermatitis study methodology have demonstrated reliable use of minimally ...
Xavier Langon, Marion Mosca, Nadège Milhau, Mélanie Legain, Adrien Idée, Didier Pin   +5 more
wiley   +1 more source

Machine Learning Model for an App‐Based Tool to Assist With the Diagnosis of Canine Atopic Dermatitis

Veterinary Dermatology, Volume 37, Issue 2, Page 236-246, April 2026.
Canine atopic dermatitis (cAD) is a chronic condition requiring life‐long management. Accurate diagnosis can be challenging, with no reliable diagnostic test. This study aimed to generate a simple diagnostic model for cAD. This model is a relevant prototype for an app‐based tool to support general practitioners in the diagnosis of cAD alongside ...
Xavier Langon, Mathieu Montoya, Isabelle Gourdon   +2 more
wiley   +1 more source

Efficacy of Der f 2/Zen 1‐LAMP1 Plasmid‐Based Vaccine Immunotherapy in Dogs With Atopic Dermatitis: A Proof‐of‐Concept Study

Veterinary Dermatology, Volume 37, Issue 2, Page 306-318, April 2026.
Background: DNA‐based vaccination rapidly induces strong cellular and humoral immune responses, which may be enhanced by inclusion of lysosomal‐associated membrane protein‐1 (LAMP). Objectives: This proof‐of‐concept study evaluated the efficacy and safety of a Der f 2/Zen 1‐LAMP‐based DNA vaccine immunotherapy in client‐owned dogs with nonseasonal AD ...
Petra Bizikova, Chigusa Matsumoto, Shoji Ogino, Toshihiro Tsukui, Kim Love, Marcy Murphy, Ina Herrmann   +6 more
wiley   +1 more source