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Approximation Theory XV: San Antonio 2016 [PDF]

open access: yes, 2017
These proceedings are based on papers presented at the international conference Approximation Theory XV, which was held May 22\u201325, 2016 in San Antonio, Texas.
DE MARCHI, Stefano   +2 more
core   +1 more source

The spaces of exponential type vectors of complex degrees of positive operators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
New classes of interpolation spaces of exponential type vectors of complex degrees of positive operators are defined. Properties of the approximation spaces generated by the considered interpolation spaces are investigated.
M. I. Dmytryshyn
doaj   +1 more source

Fast Computation of Minimal Interpolation Bases in Popov Form for Arbitrary Shifts [PDF]

open access: yes, 2016
We compute minimal bases of solutions for a general interpolation problem, which encompasses Hermite-Pad\'e approximation and constrained multivariate interpolation, and has applications in coding theory and security.
Jeannerod, Claude-Pierre   +3 more
core   +4 more sources

On the steady‐state performance of bias‐compensated LMS algorithm

open access: yesElectronics Letters, 2021
Adaptive filtering algorithms are widespread today owing to their flexibility and simplicity. Due to environments in which they are normally immersed, their robustness against noise has been a topic of interest.
Rodrigo Pimenta   +3 more
doaj   +1 more source

Solving Poisson Equations by the MN-Curve Approach

open access: yesMathematics, 2022
In this paper, we adopt the choice theory of the shape parameters contained in the smooth radial basis functions to solve Poisson equations. Luh’s choice theory, based on harmonic analysis, is mathematically complicated and applies only to function ...
Lin-Tian Luh
doaj   +1 more source

Mathematical Modeling of COVID-19 Transmission Using a Fractional Order Derivative

open access: yesFractal and Fractional, 2022
In this article, the mathematical model of COVID-19 is analyzed in the sense of a fractional order Caputo operator with the consideration of an asymptomatic class. The suggested model is comprised of four compartments. The results from fixed point theory
Badr S. Alkahtani
doaj   +1 more source

Relativistic Hartree-Bogoliubov Calculation of Specific Heat of the Inner Crust of Neutron Stars [PDF]

open access: yes, 2001
We calculate the specific heat of the inner crust of neutron stars within a local-density approximation to an improved relativistic Hartree-Bogoliubov theory. Non-uniformness of the system enhances the specific heat in particular at low temperatures. The
Matsuzaki, Masayuki, Nakano, Takuya
core   +3 more sources

Quadratic Interpolation and Linear Lifting Design

open access: yesEURASIP Journal on Image and Video Processing, 2007
A quadratic image interpolation method is stated. The formulation is connected to the optimization of lifting steps. This relation triggers the exploration of several interpolation possibilities within the same context, which uses the theory of convex ...
Joel Solé, Philippe Salembier
doaj   +2 more sources

Density Problem and Approximation Error in Learning Theory

open access: yesAbstract and Applied Analysis, 2013
We study the density problem and approximation error of reproducing kernel Hilbert spaces for the purpose of learning theory. For a Mercer kernel on a compact metric space (, ), a characterization for the generated reproducing kernel Hilbert space (RKHS)
Ding-Xuan Zhou
doaj   +1 more source

Undamped Free Vibration Analysis of Functionally Graded Beams: A Dynamic Finite Element Approach

open access: yesApplied Mechanics, 2022
A Dynamic Finite Element (DFE) method for coupled axial–flexural undamped free vibration analysis of functionally graded beams is developed and subsequently used to investigate the system’s natural frequencies and mode shapes. The formulation is based on
Aaron Gee, Seyed M. Hashemi
doaj   +1 more source

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