Results 21 to 30 of about 41,706 (192)
Rearrangements of Trigonometric Series and Trigonometric Polynomials [PDF]
Real Analysis Exchange, 2004 The paper is related to the following question of P.~L.~Ul'yanov: is it true that for any $2 $-periodic continuous function $f$ there is a uniformly convergent rearrangement of its trigonometric Fourier series? In particular, we give an affirmative answer if the absolute values of Fourier coefficients of $f$ decrease.
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Subperiodic Dubiner distance, norming meshes and trigonometric polynomial optimization [PDF]
, 2018 We extend the notion of Dubiner distance from algebraic to trigonometric polynomials on subintervals of the period, and we obtain its explicit form by the Szego variant of Videnskii inequality.
Vianello, Marco
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A quadratic trigonometric spline for curve modeling. [PDF]
PLoS ONE, 2019 An imperative curve modeling technique has been established with a view to its applications in various disciplines of science, engineering and design. It is a new spline method using piecewise quadratic trigonometric functions.
Shamaila Samreen +2 more
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m-Isometric block Toeplitz operators
Journal of Inequalities and Applications, 2019 In this paper, we study m-isometric block Toeplitz operators with trigonometric symbols. In addition, we give a necessary and sufficient condition for block Toeplitz operators with trigonometric polynomial symbols to be m-contractive.
Eungil Ko, Jongrak Lee
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Polynomial-Exponential Bounds for Some Trigonometric and Hyperbolic Functions
Axioms, 2021 Recent advances in mathematical inequalities suggest that bounds of polynomial-exponential-type are appropriate for evaluating key trigonometric functions.
Yogesh J. Bagul +3 more
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SOME ASPECTS OF THE THEORY OF WAVELETS
Pesquimat, 2014 The aim of this paper is to briefly discuss some strategies that have been developed for the construction of trigonometric polynomial m0 under certain conditions.
Luis Miguel Núñez Ramírez +2 more
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Construction of Cubic Trigonometric Curves with an Application of Curve Modelling
Mathematics, 2022 This paper introduces new trigonometric basis functions (TBF) in polynomial and rational form with two shape parameters (SPs). Some classical characteristics, such as the partition of unity, positivity, symmetry, CHP, local control and invariance under ...
Abdul Majeed +3 more
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Classical quasi-trigonometric $r-$matrices of Cremmer-Gervais type and their quantization [PDF]
, 2006 We propose a method of quantization of certain Lie bialgebra structures on the polynomial Lie algebras related to quasi-trigonometric solutions of the classical Yang-Baxter equation.
Samsonov, M. +2 more
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Efficient spectral estimation by MUSIC and ESPRIT with application to sparse FFT
Frontiers in Applied Mathematics and Statistics, 2016 In spectral estimation, one has to determine all parameters of an exponential sum for finitely many (noisy)sampled data of this exponential sum.Frequently used methods for spectral estimation are MUSIC (MUltiple SIgnal Classification) and ESPRIT ...
Daniel ePotts +2 more
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Trigonometric Polynomials and Lattice Points [PDF]
Proceedings of the American Mathematical Society, 1992 In this paper we study the distribution of lattice points on arcs of circles centered at the origin. We show that on such a circle of radius R R , an arc whose length is smaller than 2 R 1 / 2
Cilleruelo, J., Cordoba, A.
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