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Orthogonality criteria for compactly supported refinable functions and refinable function vectors
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Lagarias, Jeffrey C., Wang, Yang
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Refining perovskite structures to pair distribution function data using collective Glazer modes as a basis [PDF]
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
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On the power and promise of resonant diffraction for powders [PDF]
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
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The limits of refinable functions [PDF]
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
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The regularity of refinable functions
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
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Approximation by crystal-refinable functions [PDF]
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
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Refinable Functions with Compact Support
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Sun, Qiyu
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Sobolev exponents of Butterworth refinable functions
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Hong Oh Kim, Rae Young Kim
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On the Exact Evaluation of Integrals of Wavelets
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
The Caputo fractional α-derivative ...
Gopalakrishnan Karnan, Chien-Chang Yen
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