Results 101 to 110 of about 23,143 (202)

On the properties for families of function classes over harmonic intervals and their embedding relation with Besov spaces

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
The article is dedicated to the issues of studying the approximation of functions by trigonometric polynomials with a spectrum from special sets. In this paper, these special sets are harmonic intervals.
G.A. Yessenbayeva, L.A. Serikova
doaj   +1 more source

Interpolation of ERTS-1 multispectral scanner data [PDF]

open access: yes
Three interpolation procedures, based on computing values between original sample points, for enlarging a picture are examined. An ERTS frame of Washington, D.C. was used to illustrate the results.
Mcgillem, C. D.
core   +1 more source

ON TRIGONOMETRIC INTERPOLATION AND ITS APPLICATIONS I

open access: yes
In this paper, we propose a new trigonometric interpolation algorithm and establish relevant convergent properties. The method adjusts an existing trigonometric interpolation algorithm such that it can better leverage Fast Fourier Transform (FFT) to enhance efficiency.
openaire   +2 more sources

Concepts for on-board satellite image registration, volume 1 [PDF]

open access: yes
The NASA-NEEDS program goals present a requirement for on-board signal processing to achieve user-compatible, information-adaptive data acquisition. One very specific area of interest is the preprocessing required to register imaging sensor data which ...
Aanstoos, J. V.   +2 more
core   +1 more source

On an Exact Convergence of Quasi-Periodic Interpolations for the Polyharmonic–Neumann Eigenfunctions

open access: yesAlgorithms
Fourier expansions employing polyharmonic–Neumann eigenfunctions have demonstrated improved convergence over those using the classical trigonometric system, due to the rapid decay of their Fourier coefficients.
Arnak Poghosyan   +2 more
doaj   +1 more source

Trigonometric interpolation

open access: yesDuke Mathematical Journal, 1965
Sharma, A., Varma, A. K.
openaire   +3 more sources

Trigonometric interpolation of function and derivative data

open access: yesInformation and Control, 1975
Given the data ƒ(l)}(xp); p = 1,…, m; l = 0,…, np − 1, the periodic functions ƒ(x) are required that have these data as samples, possess a given period and minimal bandwidth, and are in the form of a linear combination of pointwise orthogonal reconstruction functions.
openaire   +2 more sources

The deformed Inozemtsev spin chain

open access: yesSciPost Physics
The Inozemtsev chain is an exactly solvable interpolation between the short-range Heisenberg and long-range Haldane–Shastry (HS) chains. In order to unlock its potential to study spin interactions with tunable interaction range using the powerful tools ...
Rob Klabbers, Jules Lamers
doaj   +1 more source

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