Results 161 to 170 of about 31,890 (192)

Inequalities for trigonometric polynomials

Approximation Theory and its Applications, 1997
Summary: Let \(t_n(x)\) be any real trigonometric polynomial of degree \(n\) such that \(\| t_n\|_\infty\leq 1\). Here, we are concerned with obtaining the best possible upper estimate of \[ \int^{2\pi}_0 | t^{(k)}_n(x)|^q dx\Biggl/\int^{2\pi}_0| t^{(k)}_n(x)|^{q- 2}dx, \] where \(q>2\).
openaire   +2 more sources

Two external problems for trigonometric polynomials

Sbornik: Mathematics, 1996
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openaire   +1 more source

Bounds for Trigonometric Polynomials

1976
Two methods for finding the maximum and minimum of a given trigonometric polynomial are described and studied. They are then applied to randomly generated polynomials. The resulting data suggest that one of the methods is superior to the other.
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Trigonometric Polynomials

2018
Dinh Dũng, Vladimir Temlyakov, Tino Ullrich   +2 more
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Least Squares Trigonometric Polynomials

2014
Trigonometric polynomials, being linear in their parameters, come close to perfectly reproduce arbitrarily curved functions.
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Trigonometric and cylindrical polynomials and their applications in electromagnetics

Applicable Analysis, 2020
Y V Shestopalov
exaly  

Trigonometric Polynomials

1975
openaire   +1 more source

Approximation of multivariate periodic functions by trigonometric polynomials based on rank-1 lattice sampling

Journal of Complexity, 2015
Daniel Potts, Toni Volkmer
exaly  

Extremum Problems for Polynomials and Trigonometrical Polynomials

Journal of the London Mathematical Society, 1954
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Trigonometric polynomials of least deviation from zero in measure and related problems

Journal of Approximation Theory, 2010
Vitalii V Arestov
exaly