Results 11 to 20 of about 311,920 (239)

A Wavelet Collocation Method for some Fractional Models

open access: yesRatio Mathematica, 2022
This article presents an effective numerical approach based on the operational matrix of fractional order integration of Haar wavelets for dealing with the fractional models of the mixing and the Newton law of cooling problems.
R Aruldoss, G. Jasmine
doaj   +1 more source

Solution of Fisher Kolmogorov Petrovsky Equation Driven via Haar Scale-3 Wavelet Collocation Method

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2022
The design of the proposed study is to examine the presentation of a novel numerical techniques based on Scale-3 Haar wavelets for a kind of reaction-diffusion system i.e., Fisher KPP (Kolmogorov Petrovsky Piskunove) Equation.
Ratesh Kumar, Sonia Arora
doaj   +1 more source

Numerical Solution for Linear State Space Systems using Haar Wavelets Method

open access: yesمجلة بغداد للعلوم, 2022
In this research, Haar wavelets method has been utilized to approximate a numerical solution for Linear state space systems. The solution technique is used Haar wavelet functions and Haar wavelet operational matrix with the operation to transform the ...
Waleeda swaidan ali, Haleema S. Ali
doaj   +1 more source

A reliable multi-resolution collocation algorithm for nonlinear Schrödinger equation with wave operator

open access: yesApplied Mathematics in Science and Engineering, 2023
The solution of a nonlinear hyperbolic Schrödinger equation (NHSE) is proposed in this paper using the Haar wavelet collocation technique (HWCM). The central difference technique is applied to handle the temporal derivative in the NHSE and the finite ...
Weidong Lei   +4 more
doaj   +1 more source

A novel numerical method for solution of fractional partial differential equations involving the ψ-Caputo fractional derivative

open access: yesAIMS Mathematics, 2023
In this study, the ψ-Haar wavelets operational matrix of integration is derived and used to solve linear ψ-fractional partial differential equations (ψ-FPDEs) with the fractional derivative defined in terms of the ψ-Caputo operator.
Amjid Ali   +3 more
doaj   +1 more source

Numerical Solution for Linear Parabolic Reaction-Double Diffusivity System using the Operational Matrices of the Haar Wavelets Method [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2008
We are using the operational matrices of the Haar wavelets method for solving linear parabolic reaction-diffusion system with double diffusivity. A numerical method based on the Haar wavelets approach which has the property  , we compared this result ...
Ahmed Qasem
doaj   +1 more source

The Haar wavelets and the Haar scaling function in weighted $L^p$ spaces with $A_p^{\dy ,m}$ weights [PDF]

open access: yes, 2006
The new class of weights called $A_p^{\dy ,m}$ weights is introduced. We prove that a characterization and an unconditional basis of the weighted $L^p$ space $L^p(\R^n , w(x)dx)$ with $w \in A_p^{\dy ,m ...
Izuki, Mitsuo
core   +1 more source

Algorithms and error bounds for multivariate piecewise constant approximation [PDF]

open access: yes, 2010
We review the surprisingly rich theory of approximation of functions of many vari- ables by piecewise constants. This covers for example the Sobolev-Poincar´e inequalities, parts of the theory of nonlinear approximation, Haar wavelets and tree ...
Davydov, Oleg
core   +1 more source

Digital Image Processing with Two-Dimensional Haar Wavelets

open access: yesInternational Journal of Advanced Trends in Computer Science and Engineering, 2020
In this article an algorithm has been developed to digitally compress an image using two-dimensional Haar wavelets, reduce its size, determine the recovery coefficients, and display a higher quality image of the processed image than the original image ...
Hakimjon Zaynidinov
semanticscholar   +1 more source

The performance of spherical wavelets to detect non-Gaussianity in the CMB sky [PDF]

open access: yes, 2001
We investigate the performance of spherical wavelets in discriminating between standard inflationary models (Gaussian) and non-Gaussian models. For the later we consider small perturbations of the Gaussian model in which an artificially specified ...
Aghanim   +42 more
core   +2 more sources

Home - About - Disclaimer - Privacy