Results 21 to 30 of about 40,887 (301)

Wavelets and wavelet-like transforms on the sphere and their application to geophysical data inversion [PDF]

, 2011
Many flexible parameterizations exist to represent data on the sphere. In addition to the venerable spherical harmonics, we have the Slepian basis, harmonic splines, wavelets and wavelet-like Slepian frames.
Simons, Frederik, Daubechies, Ingrid C, Simons, Frederik J, Brevdo, Eugene, Daubechies, Ingrid, Frederik J. Simons, Ingrid C. Daubechies, Ignace Loris, Loris, Ignace, Eugene Brevdo   +9 more
core   +1 more source

Computing continuous-time growth models with boundary conditions via wavelets [PDF]

, 2004
This paper presents an algorithm for approximating the solution of deterministic/stochastic continuous-time growth models based on the Euler's equation and the transversality conditions.
Mercedes Esteban-bravo, Jose M. Vidal-sanz, Esteban-Bravo, Mercedes, Vidal-Sanz, José M.   +3 more
core   +1 more source

Some results on generalization $\alpha-$Chebyshev wavelets [PDF]

Journal of Mahani Mathematical Research
In this paper, we introduce  generalized formulae for well-known functions such as $\alpha$-Chebyshev functions. We define $\alpha-$Chebyshev wavelets approximation and  generalization $\alpha-$wavelet coapproximation.
Hamid Mazaheri, Aabdul Wali Safi, Seayed Mohammad Jesmani   +2 more
doaj   +1 more source

A Note on Some New Generalized Wavelets

Journal of Mathematics, 2022
In this paper, we define new real wavelets based on the Hartley kernel and Boas transforms. These wavelets have possible application in analyzing both the symmetries of an asymmetric real signal.
A. Zothansanga, Nikhil Khanna, S. K. Kaushik, Dilip Kumar   +3 more
doaj   +1 more source

Chebyshev Wavelet Analysis

Journal of Function Spaces, 2022
This paper deals with Chebyshev wavelets. We analyze their properties computing their Fourier transform. Moreover, we discuss the differential properties of Chebyshev wavelets due to the connection coefficients.
Emanuel Guariglia, Rodrigo Capobianco Guido   +1 more
doaj   +1 more source

Wavelets in subspaces. [PDF]

Michigan Mathematical Journal, 1996
Let \(T\) and \(D\) be the translation and unitary dilation operators on \(L^2(\mathbb{R})\) given by \((Tf)(t)= f(t- 1)\) and \((Df)(t)=\sqrt 2f(2t)\). An orthogonal wavelet for a subspace \(X\) of \(L^2(\mathbb{R})\) is a unit vector \(\psi\in X\) such that \(\{D^nT^m\psi: n,m\in\mathbb{Z}\}\) is an orthonormal basis of \(X\).
Dai, Xingde, Lu, Shijie
openaire   +3 more sources

Epileptic seizures detection based on some new Laguerre polynomial wavelets, artificial neural networks and support vector machines

Informatics in Medicine Unlocked, 2019
Electroencephalography (EEG) is noninvasive and it is an effective tool to understand the complex nature of the brain. Its analysis by visual inspection is tedious and costly, and that is why many researchers in recent years resort to the use of computer-
Atemangoh Bruno Peachap, Daniel Tchiotsop   +1 more
doaj   +1 more source

NONUNIFORM SUPER WAVELETS IN 𝐿^2(K)

Проблемы анализа, 2021
In this paper, we introduce the structure of nonuniform super wavelets over local fields. We shall also provide the characterization of nonuniform parseval frame, nonuniform semi-orthogonal pareseval multiwavelets, and nonuniform super wavelets over ...
O. Ahmad, Abdullah A. H. Ahmadini, M. Ahmad   +2 more
doaj   +1 more source

Sinc-Fractional Operator on Shannon Wavelet Space

Frontiers in Physics, 2018
In this paper the sinc-fractional derivative is extended to the Hilbert space based on Shannon wavelets. Some new fractional operators based on wavelets are defined.
Carlo Cattani
doaj   +1 more source

Wavelets on the Interval and Fast Wavelet Transforms

Applied and Computational Harmonic Analysis, 1993
The paper contains a detailed analysis of several constructions of orthonormal bases of wavelets on a finite interval. A new construction is suggested which avoids some of the disadvantages of earlier constructions.
Cohen, Albert, Daubechies, Ingrid, Vial, Pierre   +2 more
openaire   +3 more sources