Results 21 to 30 of about 1,731 (125)

Improved bounds for the rate loss of multiresolution source codes [PDF]

open access: yes, 2003
We present new bounds for the rate loss of multiresolution source codes (MRSCs). Considering an M-resolution code, the rate loss at the ith resolution with distortion D/sub i/ is defined as L/sub i/=R/sub i/-R(D/sub i/), where R/sub i/ is the rate ...
Effros, Michelle, Feng, Hanying
core  

Matrix-free weighted quadrature for a computationally efficient isogeometric $k$-method

open access: yes, 2018
The $k$-method is the isogeometric method based on splines (or NURBS, etc.) with maximum regularity. When implemented following the paradigms of classical finite element methods, the computational resources required by the $k-$method are prohibitive even
Sangalli, Giancarlo, Tani, Mattia
core   +1 more source

Refined limiting imbeddings for Sobolev spaces of vector-valued functions

open access: yesJournal of Functional Analysis, 2005
The authors consider vector-valued Sobolev, Besov, and Triebel-Lizorkin spaces of functions with values in a general Banach space; in general, these spaces may lack the UMD property. The authors prove a refined limiting embedding theorem of the Brézis-Wainger type in the critical case. The main result reads as follows: Theorem 3.
Krbec, M. (Miroslav), Schmeisser, H.-J.
openaire   +3 more sources

Several Studies on Framelets Derived From Compactly Supported Refinable Vector Functions

open access: yesEducation and Research Archive, 2021
Generalizing wavelets by adding desired redundancy and flexibility, framelets (a.k.a. wavelet frames) are of interest and importance in many applications such as image processing and numerical algorithms. Several key properties of framelets are high vanishing moments for sparse multi-scale representation, fast framelet transforms for numerical ...
openaire   +1 more source

Surface subdivision schemes generated by refinable bivariate spline function vectors

open access: yesApplied and Computational Harmonic Analysis, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chui, Charles K., Jiang, Qingtang
openaire   +1 more source

Vector cascade algorithms and refinable function vectors in Sobolev spaces

open access: yesJournal of Approximation Theory, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Subdivision Directional Fields

open access: yes, 2019
We present a novel linear subdivision scheme for face-based tangent directional fields on triangle meshes. Our subdivision scheme is based on a novel coordinate-free representation of directional fields as halfedge-based scalar quantities, bridging the ...
Custers, Bram, Vaxman, Amir
core  

On stable refinable function vectors with arbitrary support

open access: yesJournal of Approximation Theory, 2008
This paper studies the stability property of a refinable function vector in the space of \(L^2\) using the transfer operator (also called the transition operator in the literature of wavelets). Generalizing a result of Gundy from scalar refinable functions to refinable function vectors, under conditions such as the existence of a refinable function ...
openaire   +4 more sources

Exact and Soft Successive Refinement of the Information Bottleneck. [PDF]

open access: yesEntropy (Basel), 2023
Charvin H, Catenacci Volpi N, Polani D.
europepmc   +1 more source

Site-occupancy factors in the Debye scattering equation. A theoretical discussion on significance and correctness. [PDF]

open access: yesActa Crystallogr A Found Adv, 2023
Ferri F   +6 more
europepmc   +1 more source

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