Results 11 to 20 of about 1,823 (234)

On the history of the kronecker product [PDF]

open access: yesLinear and Multilinear Algebra, 1983
History reveals that what is today called the Kronecker product should be called the Zehfuss product.
Henderson, Harold V.   +2 more
openaire   +1 more source

Controllability of Kronecker product networks [PDF]

open access: yesAutomatica, 2019
A necessary and sufficient condition is derived for the controllability of Kronecker product networks, where the factor networks are general directed graphs. The condition explicitly illustrates how the controllability of the factor networks affects the controllability of the composite network.
Yuqing Hao   +3 more
openaire   +3 more sources

The strong Kronecker product

open access: yesJournal of Combinatorial Theory, Series A, 1994
The paper obtains algebraic structure theorems and properties for the strong Kronecker product of two block matrices, \(M= [M_{ij}]\) and \(N= [N_{jk}]\), where \(i= 1,\dots,r\), \(j= 1,\dots,t\), \(k= 1,\dots,u\), each \(M_{ij}\) is an \(m\times p\) submatrix, each \(N_{jk}\) is an \(n\times q\) matrix, namely: \(M\circ N= [L_{ik}]\), \(i= 1,\dots,r\),
de Launey, Warwick, Seberry, Jennifer
openaire   +2 more sources

Notes and counterexamples on positive (semi) definite properties of some matrix products

open access: yesAin Shams Engineering Journal, 2018
In the present paper, we give some notes and counterexamples to show that the positive (semi) definite property of the Khatri-Rao and Tracy-Singh products of partitioned matrices are in general incorrect and show also that the matrix triangle inequality ...
Zeyad Al-Zhour
doaj   +1 more source

On a formula of spin sums, Eisenstein-Kronecker series in higher genus Riemann surfaces

open access: yesNuclear Physics B, 2023
We discuss a decomposition formula of simple products of fermion correlation functions with cyclic constrains and its applications to spin sums of super string amplitudes.Based on some facts which are noted or derived in this paper, we propose a ...
A.G. Tsuchiya
doaj   +1 more source

Expressions for Catalan Kronecker products [PDF]

open access: yesPacific Journal of Mathematics, 2010
19 ...
Brown, Andrew A. H.   +2 more
openaire   +3 more sources

Pacific salmon and the coalescent effective population size. [PDF]

open access: yesPLoS ONE, 2010
Pacific salmon include several species that are both commercially important and endangered. Understanding the causes of loss in genetic variation is essential for designing better conservation strategies.
Can Cenik, John Wakeley
doaj   +1 more source

On Hadamard and Kronecker products in covariance structures for genotype × environment interaction

open access: yesThe Plant Genome, 2020
When including genotype × environment interactions (G × E) in genomic prediction models, Hadamard or Kronecker products have been used to model the covariance structure of interactions.
Johannes W. R. Martini   +3 more
doaj   +1 more source

Exploitation of Kronecker Structure in Gaussian Process Regression for Efficient Biomedical Signal Processing

open access: yesCurrent Directions in Biomedical Engineering, 2021
Gaussian processes are a versatile tool for data processing. Unfortunately, due to storage and runtime requirements, standard Gaussian process (GP) methods are limited to a few thousand data points.
Prüßmann Jannik   +2 more
doaj   +1 more source

Specification of initial Kalman recursions of symmetric nonlinear state-space model

open access: yesHeliyon, 2020
A new class of nonlinear Time Series model referred to as Symmetric Nonlinear State-Space Model (SNSSM) was successfully developed using Kalman filter methodology.
M. Tasi'u   +3 more
doaj   +1 more source

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