Results 1 to 10 of about 13,805 (159)

About some exponential inequalities related to the sinc function [PDF]

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we prove some exponential inequalities involving the sinc function. We analyze and prove inequalities with constant exponents and inequalities with certain polynomial exponents. Also, we establish intervals in which these inequalities hold.
Marija Rašajski   +2 more
doaj   +9 more sources

A Lower Bound on the Sinc Function and Its Application [PDF]

open access: yesThe Scientific World Journal, 2014
A lower bound on the sinc function is given. Application for the sequence bnn=1∞ which related to Carleman inequality is given as well.
Yue Hu, Cristinel Mortici
doaj   +5 more sources

A Sinc Function Analogue of Chebfun [PDF]

open access: yesSIAM Journal of Scientific Computing, 2011
Chebfun is an established software system for computing with functions of a real variable, but its capabilities for handling functions with singularities are limited. Here an analogous system is described based on sinc function expansions instead of Chebyshev series.
Lloyd Trefethen
exaly   +3 more sources

Polynomial function and derivative approximation of Sinc data

open access: yesJournal of Complexity, 2009
Sinc methods consist of a family of one-dimensional approximation procedures for approximating the operations of calculus. These procedures are obtained by operating on the sinc interpolation formulae, which are based on the function values in the sinc points. Usually, these operations yield high accuracy.
Frank Stenger
exaly   +3 more sources

Fourier series for zeta function via Sinc

open access: yesLinear Algebra and Its Applications, 2008
AbstractIn this paper we derive some Fourier series and Fourier polynomial approximations to a function F which has the same zeros as the zeta function, ζ(z) on the strip {z∈C ...
Frank Stenger
exaly   +2 more sources

Sinc Based Inverse Laplace Transforms, Mittag-Leffler Functions and Their Approximation for Fractional Calculus

open access: yesFractal and Fractional, 2021
We shall discuss three methods of inverse Laplace transforms. A Sinc-Thiele approximation, a pure Sinc, and a Sinc-Gaussian based method. The two last Sinc related methods are exact methods of inverse Laplace transforms which allow us a numerical ...
Gerd Baumann
doaj   +1 more source

Using GEDI Waveforms for Improved TanDEM-X Forest Height Mapping: A Combined SINC + Legendre Approach

open access: yesRemote Sensing, 2021
In this paper, we consider a new method for forest canopy height estimation using TanDEM-X single-pass radar interferometry. We exploit available information from sample-based, space-borne LiDAR systems, such as the Global Ecosystem Dynamics ...
Hao Chen   +2 more
doaj   +1 more source

Refinements of Some Classical Inequalities Involving Sinc and Hyperbolic Sinc Functions

open access: yesAnnales Mathematicae Silesianae, 2022
Abstract Several bounds of trigonometric-exponential and hyperbolic-exponential type for sinc and hyperbolic sinc functions are presented. In an attempt to generalize the results, some known inequalities are sharpened and extended. Hyperbolic versions are also established, along with extensions.
Yogesh J. Bagul   +3 more
openaire   +3 more sources

Adaptive Piecewise Poly-Sinc Methods for Ordinary Differential Equations

open access: yesAlgorithms, 2022
We propose a new method of adaptive piecewise approximation based on Sinc points for ordinary differential equations. The adaptive method is a piecewise collocation method which utilizes Poly-Sinc interpolation to reach a preset level of accuracy for the
Omar Khalil   +3 more
doaj   +1 more source

An h-Adaptive Poly-Sinc-Based Local Discontinuous Galerkin Method for Elliptic Partial Differential Equations

open access: yesAxioms, 2023
For the purpose of solving elliptic partial differential equations, we suggest a new approach using an h-adaptive local discontinuous Galerkin approximation based on Sinc points.
Omar A. Khalil, Gerd Baumann
doaj   +1 more source

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