Results 21 to 30 of about 5,154,441 (261)

Refinement equations and spline functions [PDF]

open access: yesAdvances in Computational Mathematics, 2008
In this paper, we exploit the relation between the regularity of refinable functions with non-integer dilations and the distribution of powers of a fixed number modulo 1, and show the nonexistence of a non-trivial {\bf C}^{\infty} solution of the refinement equation with non-integer dilations.
Arturas Dubickas, Zhiqiang Xu 0001
openaire   +3 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   +4 more sources

Generalized interpolating refinable function vectors [PDF]

open access: yes, 2009
Interpolating scalar refinable functions with compact support are of interest in several applications such as sampling theory, signal processing, computer graphics, and numerical algorithms.
Kwon, Soon-Geol   +2 more
core   +1 more source

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   +3 more sources

HOW TO REFINE POLYNOMIAL FUNCTIONS [PDF]

open access: yesInternational Journal of Wavelets, Multiresolution and Information Processing, 2012
Research on refinable functions in wavelet theory is mostly focused to localized functions. However it is known, that polynomial functions are refinable, too. In our paper we investigate on conversions between refinement masks and polynomials and their uniqueness.
openaire   +3 more sources

Refinements of Fejér’s inequality for convex functions [PDF]

open access: yesPeriodica Mathematica Hungarica, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kuei-Lin Tseng   +2 more
openaire   +2 more sources

High Balanced Biorthogonal Multiwavelets with Symmetry

open access: yesAbstract and Applied Analysis, 2014
Balanced multiwavelet transform can process the vector-valued data sparsely while preserving a polynomial signal. Yang et al. (2006) constructed balanced multiwavelets from the existing nonbalanced ones.
Youfa Li   +3 more
doaj   +1 more source

Analysis of Compactly Supported Nonstationary Biorthogonal Wavelet Systems Based on Exponential B-Splines

open access: yesAbstract and Applied Analysis, 2011
This paper is concerned with analyzing the mathematical properties, such as the regularity and stability of nonstationary biorthogonal wavelet systems based on exponential B-splines.
Yeon Ju Lee, Jungho Yoon
doaj   +1 more source

Refinable functions for dilation families [PDF]

open access: yesAdvances in Computational Mathematics, 2011
Advances in Computational Mathematics, 36 (3)
openaire   +5 more sources

Time refinement in a functional synchronous language [PDF]

open access: yesScience of Computer Programming, 2013
Concurrent and reactive systems often exhibit multiple time scales. This situation occurs, for instance, in the discrete simulation of a sensor network where the time scale at which agents communicate is very different from the time scale used to model the internals of an agent.The paper presents reactive domains to simplify the programming of such ...
Pouzet, Marc   +2 more
openaire   +3 more sources

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