Results 191 to 200 of about 59,338 (261)

Fourier-Haar coefficients

Mathematical Notes of the Academy of Sciences of the USSR, 1984
A Banach lattice E is called p-concave, \(1\leq ...
Novikov, I. Ya., Semenov, E. M.
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Sign Haar Transform

Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94, 2002
A non-linear transform, called "Sign Haar Transform" has been introduced. The transform is unique and converts binary/ternary vectors into ternary spectral domain. Recursive definitions and Fast Transforms for the calculation of Sign Haar Transform have been developed.
Bogdan J. Falkowski, Susanto Rahardja
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An approach based on Haar wavelet for the approximation of fractional calculus with application to initial and boundary value problems

Mathematical methods in the applied sciences, 2020
In this paper, we propose the numerical approximation of fractional initial and boundary value problems using Haar wavelets. In contrast to the Haar wavelet methods available in literature, where the fractional derivative of the function is approximated ...
Vaibhav Mehandiratta, M. Mehra, G. Leugering   +2 more
semanticscholar   +1 more source

Crystallographic Haar Wavelets

Journal of Fourier Analysis and Applications, 2011
Let \(\Gamma\) be a \(d\)-dimensional crystallographic group and let \(a:\,{\mathbb R}^d \to {\mathbb R}^d\) be an expanding affine map. By definition, \((\Gamma,a)\)-crystallographic multiwavelets form a finite set of functions \(\{\psi^1,\ldots, \psi^L\}\), which generate an orthonormal basis, a Riesz basis or a Parseval frame for \(L^1({\mathbb R}^d)
González, Alfredo L., Moure, María del Carmen   +1 more
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A Haar wavelet collocation approach for solving one and two‐dimensional second‐order linear and nonlinear hyperbolic telegraph equations

Numerical Methods for Partial Differential Equations, 2020
We have developed a new numerical method based on Haar wavelet (HW) in this article for the numerical solution (NS) of one‐ and two‐dimensional hyperbolic Telegraph equations (HTEs).
M. Asif, Nadeem Haider, Q. Al‐Mdallal, Imran Khan   +3 more
semanticscholar   +1 more source

Haar wavelet downsampling: A simple but effective downsampling module for semantic segmentation

Pattern Recognition, 2023
Guoping Xu, Wentao Liao, Xuan Zhan, Chang Li, Xinwei He, Xing Wu   +5 more
semanticscholar   +1 more source

Haar wavelet approximation for the solution of cubic nonlinear Schrodinger equations

, 2020
In this study, Haar wavelet collocation method is used for the numerical solution of 1D and 2D cubic nonlinear Schrodinger equations with initial and Dirichlet boundary conditions.
Nosheen Pervaiz, I. Aziz
semanticscholar   +1 more source

Haar Wavelets

A Primer on Wavelets and Their Scientific Applications, 2021
A. Haar
semanticscholar   +1 more source

A numerical algorithm based on scale-3 Haar wavelets for fractional advection dispersion equation

, 2020
Purpose This paper aims to propose a novel approach based on uniform scale-3 Haar wavelets for unsteady state space fractional advection-dispersion partial differential equation which arises in complex network, fluid dynamics in porous media, biology ...
Sapna Pandit, R. Mittal
semanticscholar   +1 more source

On a Property of the Haar system

Mathematical Notes, 2006
Let \[ A_0=\{[0,1), [0,1/2), [1/2,1), [0,1/4), [1/4,1/2), [1/2,3/4), [3/4,1),\dots\} \] be the set of all binary half-open intervals, \(A=A_0\cup [0,1]\), and let \(\{h_I, I\in A\}\) be the Haar system numbered by the elements of the set \(A\) as follows: \(h_I(t)=|I|^{-1}\) for \(t\in I^+\), \(h_I(t)=-|I|^{-1}\) for \(t\in I^-\) and \(h_I(t)=0\) for \(
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