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Orthogonality criteria for compactly supported refinable functions and refinable function vectors

open access: yesJournal of Fourier Analysis and Applications, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lagarias, Jeffrey C., Wang, Yang
exaly   +5 more sources

Refining perovskite structures to pair distribution function data using collective Glazer modes as a basis [PDF]

open access: yesIUCrJ, 2022
Structural modelling of octahedral tilts in perovskites is typically carried out using the symmetry constraints of the resulting space group. In most cases, this introduces more degrees of freedom than those strictly necessary to describe only the ...
Sandra Helen Skjærvø   +3 more
doaj   +2 more sources

On the power and promise of resonant diffraction for powders [PDF]

open access: yesStructural Dynamics
Significantly more information is available if X-ray scattering and spectroscopic techniques are combined. In crystallography, structural information is encoded in the intensity of Bragg peaks, with the complex scattering power of each atom given by f(Q ...
Kevin H. Stone, Sikhumbuzo M. Masina
doaj   +2 more sources

The limits of refinable functions [PDF]

open access: yesTransactions of the American Mathematical Society, 2001
Summary: A function \(\phi\) is refinable (\(\phi \in S\)) if it is in the closed span of \(\{\phi(2x-k)\}\). This set \(S\) is not closed in \(L_{2}(\mathbb{R})\), and we characterize its closure. A necessary and sufficient condition for a function to be refinable is presented without any information on the refinement mask.
Strang, Gilbert, Zhou, Ding-Xuan
openaire   +3 more sources

The regularity of refinable functions

open access: yesApplied and Computational Harmonic Analysis, 2013
The regularity of refinable functions has been studied extensively in the past. A classical result by Daubechies and Lagarias states that a compactly supported refinable function in $\R$ of finite mask with integer dilation and translations cannot be in $C^\infty$.
Wang, Yang, Xu, Zhiqiang
openaire   +4 more sources

Approximation by crystal-refinable functions [PDF]

open access: yesGeometriae Dedicata, 2019
Let $Γ$ be a crystal group in $\mathbb R^d$. A function $φ:\mathbb R^d\longrightarrow \mathbb C$ is said to be {\em crystal-refinable} (or $Γ-$refinable) if it is a linear combination of finitely many of the rescaled and translated functions $φ(γ^{-1}(ax))$, where the {\em translations} $γ$ are taken on a crystal group $Γ$, and $a$ is an expansive ...
Ursula Molter   +2 more
openaire   +5 more sources

Refinable Functions with Compact Support

open access: yesJournal of Approximation Theory, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sun, Qiyu
openaire   +3 more sources

Sobolev exponents of Butterworth refinable functions

open access: yesApplied Mathematics Letters, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hong Oh Kim, Rae Young Kim
openaire   +3 more sources

On the Exact Evaluation of Integrals of Wavelets

open access: yesMathematics, 2023
Wavelet expansions are a powerful tool for constructing adaptive approximations. For this reason, they find applications in a variety of fields, from signal processing to approximation theory.
Enza Pellegrino   +2 more
doaj   +1 more source

Refinable Trapezoidal Method on Riemann–Stieltjes Integral and Caputo Fractional Derivatives for Non-Smooth Functions

open access: yesFractal and Fractional, 2023
The Caputo fractional α-derivative ...
Gopalakrishnan Karnan, Chien-Chang Yen
doaj   +1 more source

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