Results 31 to 40 of about 33,160 (194)

A New Fractional Integration Operational Matrix of Chebyshev Wavelets in Fractional Delay Systems

open access: yesFractal and Fractional, 2019
Fractional integration operational matrix of Chebyshev wavelets based on the Riemann−Liouville fractional integral operator is derived directly from Chebyshev wavelets for the first time.
Iman Malmir
doaj   +1 more source

Multiresolution Wavelet Based Adaptive Numerical Dissipation Control for High Order Methods

open access: yesJournal of Scientific Computing, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sjögreen, Bjorn, Yee, Helen C.
openaire   +3 more sources

New Ultraspherical Wavelets Spectral Solutions for Fractional Riccati Differential Equations

open access: yesAbstract and Applied Analysis, 2014
We introduce two new spectral wavelets algorithms for solving linear and nonlinear fractional-order Riccati differential equation. The suggested algorithms are basically based on employing the ultraspherical wavelets together with the tau and collocation
W. M. Abd-Elhameed, Y. H. Youssri
doaj   +1 more source

Fibonacci wavelet method for solving time-fractional telegraph equations with Dirichlet boundary conditions

open access: yesResults in Physics, 2021
In this article, a new and efficient operational matrix method based on the amalgamation of Fibonacci wavelets and block pulse functions is proposed for the solutions of time-fractional telegraph equations with Dirichlet boundary conditions.
Firdous A. Shah   +4 more
doaj   +1 more source

Wavelets in Field Theory [PDF]

open access: yes, 2013
We advocate the use of Daubechies wavelets as a basis for treating a variety of problems in quantum field theory. This basis has both natural large volume and short distance cutoffs, has natural partitions of unity, and the basis functions are all ...
Bulut, Fatih, Polyzou, Wayne N.
core   +2 more sources

Numerical Solution for Linear State Space Systems using Haar Wavelets Method

open access: yesBaghdad Science Journal, 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 state space system into a system of linear algebraic equations which can be resolved by MATLAB over an ...
Waleeda swaidan ali, Haleema S. Ali
openaire   +3 more sources

The solution of multi-scale partial differential equations using wavelets

open access: yes, 1998
Wavelets are a powerful new mathematical tool which offers the possibility to treat in a natural way quantities characterized by several length scales.
Beylkin   +10 more
core   +1 more source

Refinement trajectory and determination of eigenstates by a wavelet based adaptive method [PDF]

open access: yes, 2006
The detail structure of the wave function is analyzed at various refinement levels using the methods of wavelet analysis. The eigenvalue problem of a model system is solved in granular Hilbert spaces, and the trajectory of the eigenstates is traced in ...
Nagy, Sz., Pipek, J.
core   +2 more sources

Wavelet-based Methods for Numerical Solutions of Differential Equations

open access: yes, 2019
Wavelet theory has been well studied in recent decades. Due to their appealing features such as sparse multiscale representation and fast algorithms, wavelets have enjoyed many tremendous successes in the areas of signal/image processing and computational mathematics.
Han, Bin   +2 more
openaire   +2 more sources

Wavelet-Galerkin Method and Some Numerical Method for Lane-Emden Type Differential Equation [PDF]

open access: yesAmerican Journal of Applied Mathematics and Statistics, 2013
In this paper, we will compare the performance of Adomian decomposition method and the wavelet-Galerkin method applied to the Lane-Emden type differential equation. The Galerkin Wavelet method (GWM), which is known as a numerical approach is used for the Lane- Emden equation, as an initial value problem.
Jafar Biazar, Fereshteh Goldoust
openaire   +1 more source

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