Results 91 to 100 of about 280,749 (199)
An inequality for trigonometric polynomials [PDF]
Proceedings of the American Mathematical Society, 1982 Our purpose is to obtain in an elementary way a sharp estimate on the derivative of a trigonometric polynomial of degree ⩽
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A Class of Sheffer Sequences of Some Complex Polynomials and Their Degenerate Types
Mathematics, 2019 We study some properties of Sheffer sequences for some special polynomials with complex Changhee and Daehee polynomials introducing their complex versions of the polynomials and splitting them into real and imaginary parts using trigonometric polynomial ...
Dojin Kim
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Lasso trigonometric polynomial approximation for periodic function recovery in equidistant points [PDF]
, 2023 In this paper, we propose a fully discrete soft thresholding trigonometric polynomial approximation on $[-\pi,\pi],$ named Lasso trigonometric interpolation.
Cai, Mou, An, Congpei
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On Cyclotomic Polynomial Coefficients
, 2020 For a positive integer n > 1 the n-th cyclotomic polynomial is defined by (Formula presented) where ς are the primitive n-th roots of unity. These polynomials are known to possess many interesting properties.
Andrica, D., Bagdasar, O.
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Deterministic sampling of sparse trigonometric polynomials
Journal of Complexity, 2011 One can recover sparse multivariate trigonometric polynomials from few randomly taken samples with high probability (as shown by Kunis and Rauhut). We give a deterministic sampling of multivariate trigonometric polynomials inspired by Weil's exponential sum.
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Optimal designs for estimating the slope of a regression [PDF]
In the common linear regression model we consider the problem of designing experiments for estimating the slope of the expected response in a regression.
Dette, Holger, Melas, Viatcheslav B.
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The Crest factor for trigonometric polynomials. Part I: Approximation theoretical estimates
Journal of Numerical Analysis and Approximation Theory, 2001 The Chebyshev norm of a degree n trigonometric polynomial is estimated against a discrete maximum norm based on equidistant sampling points where, typically, oversampling rather than critical sampling is used. The bounds are derived from various methods
K. Jetter, G. Pfander, G. Zimmermann
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Alternating trigonometric polynomials
Journal of Approximation Theory, 1987 Set \(t_ k=h_ n+\{k\pi /(n+1)\}\), \(k=0,1,...,2n+1\), \(0\leq h_ ...
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Non-parametric methods for circular-circular and circular-linear [PDF]
We present a non-parametric approach for the estimation of the bivariate distribution of two circular variables and the modelling of the joint distribution of a circular and a linear variable.
José Antonio Carnicero +2 more
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On estimates of M-term approximations of the Sobolev class in the Lorentz space
Қарағанды университетінің хабаршысы. Математика сериясыIn the paper spaces of periodic functions of several variables were considered, namely the Lorentz space L2,τ(Tm), the class of functions with bounded mixed fractional derivative Wr2,τ, 1 ≤ τ < ∞, and the order of the best M-term approximation of a ...
Г. Акишев +1 more
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