Results 41 to 50 of about 13,291 (315)

Interpolation Of 2d Banach Spaces And Multiparametric Approximation

open access: yes, 2015
A multiparametric approximation theory via certain inequalities of Jackson and Bernstein type is developed. An approximation space is defined and it is shown that it is actually an interpolation space among 2d Banach spaces.
Fernandez D.L., FERNANDEZ, DL
core   +1 more source

Faber-Schauder Wavelet Sparse Grid Approach for Option Pricing with Transactions Cost

open access: yesAbstract and Applied Analysis, 2014
Transforming the nonlinear Black-Scholes equation into the diffusion PDE by introducing the log transform of S and (T−t)→τ can provide the most stable platform within which option prices can be evaluated.
Shu-Li Mei
doaj   +1 more source

Approximation by optimal periodic interpolation [PDF]

open access: yes, 1987
summary:Following the research of Babuška and Práger, the author studies the approximation power of periodic interpolation in the mean square norm thus extending his own former ...
Delvos, Franz-J.   +2 more
core   +1 more source

Fast Linear Canonical Transform for Nonequispaced Data

open access: yesFractal and Fractional, 2023
The investigations of the discrete and fast linear canonical transform (LCT) are becoming one of the hottest research topics in modern signal processing and optics.
Yannan Sun, Wenchao Qian
doaj   +1 more source

A Finite Difference Scheme for Compressible Miscible Displacement Flow in Porous Media on Grids with Local Refinement in Time

open access: yesAbstract and Applied Analysis, 2013
Considering two-dimensional compressible miscible displacement flow in porous media, finite difference schemes on grids with local refinement in time are constructed and studied.
Wei Liu
doaj   +1 more source

APPROXIMATELY SINGULAR WAVELET

open access: yesСистемный анализ и прикладная информатика, 2018
The problem of approximation is relevant for most engineering applications. In this connection, the universal methods of approximation are of interest. The method of nonparametric approximation is developing in the paper – the method of singular wavelets.
V. M. Romanchak
doaj   +1 more source

Interpolation of several multiparametric approximation spaces

open access: yes, 2004
We prove a general interpolation theorem for linear operators acting simultaneously in several approximation spaces which are defined by multiparametric approximation families.
Asekritova, Irina,   +3 more
core   +1 more source

Integrated cosine functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
In order to the second order Cauchy problem (CP2):x″(t)=Ax(t), x(0)=x∈D(An), x″(0)=y∈D(Am) on a Banach space, Arendt and Kellermann recently introduced the integrated cosine function.
Quan Zheng
doaj   +1 more source

APPLICATION OF B-SPLINE METHOD IN SURFACE FITTING PROBLEM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Fitting a smooth surface on irregular data is a problem in many applications of data analysis. Spline polynomials in different orders have been used for interpolation and approximation in one or two-dimensional space in many researches. These polynomials
F. Esmaeili   +3 more
doaj   +1 more source

Modified Fourier expansions: theory, construction and applications

open access: yes, 2010
Modified Fourier expansions present an alternative to more standard algorithms for the approximation of nonperiodic functions in bounded domains. This thesis addresses the theory of such expansions, their effective construction and computation, and ...

core   +1 more source

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