Results 1 to 10 of about 251 (211)

Tridiagonal matrices: Invertibility and conditioning

open access: yesLinear Algebra and Its Applications, 1992
The authors consider conditioning of a tridiagonal matrix \(T\), normalized to have unit diagonal, \(\tau_ 1, \dots, \tau_{n-1}\) on the superdiagonal and \(\sigma_ 1, \dots, \sigma_{n-1}\) on the subdiagonal. The cases \(\sigma_ i \tau_ i > 0\) for all \(i\), and \(\sigma_ i \tau_ i < 0\) for all \(i\), are analyzed in detail. An exact formula for the
Luigi Brugnano, D Trigiante
exaly   +2 more sources

Conditioning and accurate computations with Pascal matrices

open access: yesJournal of Computational and Applied Mathematics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pedro Alonso   +2 more
exaly   +3 more sources

Integrals Involving Product of Polynomials and Daubechies Scale Functions [PDF]

open access: yesMathematics Interdisciplinary Research, 2021
In this paper, we will introduce an algorithm for obtaining integrals of the form ∫x0 tm φ(t)dt, m ∈ N ∪ {0}, where φ is the scaling functions of Daubechies wavelet.
Amjad Alipanah   +2 more
doaj   +1 more source

Research progress on the effect of water types on H2 production in cement solidification treatment

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2021
In this article, we made a comprehensive discussion of the advantages and disadvantages of cementitious matrices for low-and intermediate-level nuclear waste conditioning, reviewed the effects of water type (i.e., adsorbed water, trapped water, pore ...
YIN Chengying
doaj   +1 more source

A local meshless radial basis functions based method for solving fractional integral equations [PDF]

open access: yesComputational Algorithms and Numerical Dimensions, 2023
This paper presents a Localized Radial Basis Functions Collocation Method (LRBFCM) for numerically solving one and 2-dimensional Fractional Integral Equations (2D-FIEs).
Mehdi Radmanesh, Mohammad Ebadi
doaj   +1 more source

Combined matrices and conditioning

open access: yesApplied Mathematics and Computation, 2022
[EN] In this work, we study a lower bound of the condition number of a matrix by its combined matrix. In particular, we construct a special combined matrix in such a way that the sums of its columns are lower bounds of the condition number of the matrix. Cases for special matrices as unitary matrices are considered.
Rafael Bru   +2 more
openaire   +3 more sources

Non-Muscle Myosin II Isoforms Have Different Functions in Matrix Rearrangement by MDA-MB-231 Cells. [PDF]

open access: yesPLoS ONE, 2015
The role of a stiffening extra-cellular matrix (ECM) in cancer progression is documented but poorly understood. Here we use a conditioning protocol to test the role of nonmuscle myosin II isoforms in cell mediated ECM arrangement using collagen ...
Bridget Hindman   +3 more
doaj   +1 more source

First Report of the Joint Exposure to Glyphosate and Glufosinate of a Male Population in the Province of Córdoba (Argentina)

open access: yesToxics, 2023
Despite potential health implications, data on the presence of Glyphosate (GLY) and other non-GLY herbicides in human matrices remain scarce. This study aimed to develop a simple and cost-effective methodology for detecting and quantifying GLY, its ...
Iohanna Filippi   +7 more
doaj   +1 more source

On the preconditioning of the primal form of TFOV-based image deblurring model

open access: yesScientific Reports, 2023
To address the staircasing problem in deblurred images generated by a simple total variation (TV) based model, one approach is to use the total fractional-order variation (TFOV) image deblurring model.
Junseok Kim, Shahabz Ahmad
doaj   +1 more source

2D Newton Schwarz Legendre Collocation Method for a Convection Problem

open access: yesMathematics, 2022
In this work, an alternate Schwarz domain decomposition method is proposed to solve a Rayleigh–Bénard problem. The problem is modeled with the incompressible Navier–Stokes equations coupled with a heat equation in a rectangular domain.
Darío Martínez   +2 more
doaj   +1 more source

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