Results 91 to 100 of about 2,374 (146)

On the Harary Estrada index of graphs

Special Matrices
Let GG be a connected graph with nn vertices v1,…,vn{v}_{1},\ldots ,{v}_{n}. The Harary matrix of GG, denoted by H(G)H\left(G), is an n×nn\times n matrix with a zero main diagonal, where the (i,j)\left(i,j)-entry is 1d(vi,vj)\frac{1}{d\left({v}_{i},{v}_ ...
Oboudi Mohammad Reza
doaj   +1 more source

Forecasting the action of CAR-T cells against SARS-corona virus-II infection with branching process. [PDF]

Model Earth Syst Environ, 2022
Al-Utaibi KA, Nutini A, Sohail A, Arif R, Tunc S, Sait SM.   +5 more
europepmc   +1 more source

On the spectrum of tridiagonal matrices with two-periodic main diagonal

Special Matrices
We find the spectrum and eigenvectors of an arbitrary irreducible complex tridiagonal matrix with two-periodic main diagonal. This is expressed in terms of the spectrum and eigenvectors of the matrix with the same sub- and superdiagonals and zero main ...
Dyachenko Alexander, Tyaglov Mikhail
doaj   +1 more source

Enhanced Young-type inequalities utilizing Kantorovich approach for semidefinite matrices

Open Mathematics
This article introduces new Young-type inequalities, leveraging the Kantorovich constant, by refining the original inequality. In addition, we present a range of norm-based inequalities applicable to positive semidefinite matrices, such as the Hilbert ...
Bani-Ahmad Feras, Rashid Mohammad Hussein Mohammad   +1 more
doaj   +1 more source

Spectral neighbor joining for reconstruction of latent tree Models. [PDF]

SIAM J Math Data Sci, 2021
Jaffe A, Amsel N, Aizenbud Y, Nadler B, Chang JT, Kluger Y.   +5 more
europepmc   +1 more source

Spectral top-down recovery of latent tree models. [PDF]

Inf inference, 2023
Aizenbud Y, Jaffe A, Wang M, Hu A, Amsel N, Nadler B, Chang JT, Kluger Y.   +7 more
europepmc   +1 more source

Degree-based topological properties of borophene sheets

Main Group Metal Chemistry
This study examines many innovative topological numbers and establishes mathematical interpretations for boron clusters and borophene coverings. The general Randic index, arithmetic index, and Albertson index are discussed in this work for the alpha ...
Al Khabyah Ali, Ahmad Ali, Azeem Muhammad, Koam Ali N. A.   +3 more
doaj   +1 more source

Eigenfunctions on an infinite Schrödinger network

Open Mathematics
In this article, we show that there is a one-to-one correspondence between the eigenfunctions associated with the perturbed Laplacian operator Δq{\Delta }_{q} on a Schrödinger infinite network {X,t,q}\{X,t,q\} with weight function q(a)q\left(a) and the ...
Bajunaid Ibtesam, Venkataraman Madhu, Manivannan Varadha Raj   +2 more
doaj   +1 more source

On the minimum spectral radius of connected graphs of given order and size

Special Matrices
In this article, we study a question of Hong from 1993 related to the minimum spectral radii of the adjacency matrices of connected graphs of given order and size.
Cioaba Sebastian M., Gupta Vishal, Marques Celso   +2 more
doaj   +1 more source

A new S-type upper bound for the largest singular value of nonnegative rectangular tensors. [PDF]

J Inequal Appl, 2017
Zhao J, Sang C.
europepmc   +1 more source