Results 11 to 20 of about 555 (31)

Pseudomonas aeruginosa isolation from dog grooming products used by private owners or by professional pet grooming salons: prevalence and risk factors

open access: yesVeterinary Dermatology, Volume 33, Issue 4, Page 316-e73, August 2022., 2022
Abstract Background Pseudomonas aeruginosa is the most commonly isolated bacterium from skin lesions of dogs with post‐grooming furunculosis (PGF). It is frequently found in human hair and skin care products, and may pose a health risk to consumers. Information regarding the prevalence of P. aeruginosa contamination of dog grooming products is lacking.
Elad Perry   +5 more
wiley   +1 more source

Maximizing the determinant for a special class of block‐partitioned matrices

open access: yesMathematical Problems in Engineering, Volume 2004, Issue 1, Page 49-61, 2004., 2004
An analytical solution is found for the maximum determinant of a block‐partitioned class of matrices with constant trace for each block. As an immediate application of this result, the maximum determinant of a sum of Kronecker products is derived.
Otilia Popescu   +2 more
wiley   +1 more source

Symplectic analogs of polar decomposition and their applications to bosonic Gaussian channels

open access: yes, 2020
We obtain several analogs of real polar decomposition for even dimensional matrices. In particular, we decompose a non-degenerate matrix as a product of a Hamiltonian and an anti-symplectic matrix and under additional requirements we decompose a matrix ...
Teretenkov, A. E.
core   +1 more source

Algorithm of J‐factorization of rational matrices with zeros and poles on the imaginary axis

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 45, Page 2873-2885, 2003., 2003
The problem of J‐factorization of rational matrices, which have zeros and poles on the imaginary axis, is reduced to construction of the solutions of two algebraic Riccati equations. For construction of these solutions, it is offered to use appropriate algorithms.
Vladimir B. Larin
wiley   +1 more source

A constructive arbitrary-degree Kronecker product decomposition of tensors [PDF]

open access: yes, 2016
We propose the tensor Kronecker product singular value decomposition~(TKPSVD) that decomposes a real $k$-way tensor $\mathcal{A}$ into a linear combination of tensor Kronecker products with an arbitrary number of $d$ factors $\mathcal{A} = \sum_{j=1}^R ...
Batselier, Kim, Wong, Ngai
core   +2 more sources

On the q-Lie group of q-Appell polynomial matrices and related factorizations

open access: yesSpecial Matrices, 2018
In the spirit of our earlier paper [10] and Zhang and Wang [16],we introduce the matrix of multiplicative q-Appell polynomials of order M ∈ ℤ. This is the representation of the respective q-Appell polynomials in ke-ke basis.
Ernst Thomas
doaj   +1 more source

The semigroup generated by the similarity class of a singular matrix

open access: yes, 2011
Let A be a singular matrix of M_n(K), where K is an arbitrary field. Using canonical forms, we give a new proof that the sub-semigroup of (M_n(K),x) generated by the similarity class of A is the set of matrices of M_n(K) with a rank lesser than or equal ...
Pazzis, Clément de Seguins
core   +1 more source

Square Roots of Real 3 × 3 Matrices vs. Quartic Polynomials with Real Zeros

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
There is an interesting analogy between the description of the real square roots of 3×3 matrices and the zeros of the (depressed) real quartic polynomials.
Anghel Nicolae
doaj   +1 more source

On an argument of J.--F. Cardoso dealing with perturbations of joint diagonalizers

open access: yes, 2012
B. Afsari has recently proposed a new approach to the matrix joint diagonalization, introduced by J.--F. Cardoso in 1994, in order to investigate the independent component analysis and the blind signal processing in a wider prospective.
Russo, Francesco G.
core   +1 more source

A note on Iwasawa-type decomposition

open access: yes, 2010
We study the Iwasawa-type decomposition of an open subset of SL(n,C) as SU(p,q)AN. We show that the dressing action of SU(p,q) is globally defined on the space of admissible elements in AN.
Foth, Philip
core   +2 more sources

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