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The Trigonometric Polynomial Like Bernstein Polynomial [PDF]

open access: yesThe Scientific World Journal, 2014
A symmetric basis of trigonometric polynomial space is presented. Based on the basis, symmetric trigonometric polynomial approximants like Bernstein polynomials are constructed.
Xuli Han
doaj   +5 more sources

Trigonometric Polynomial Solutions of Bernoulli Trigonometric Polynomial Differential Equations

open access: yesMathematics, 2022
We consider real trigonometric polynomial Bernoulli equations of the form A(θ)y′=B1(θ)+Bn(θ)yn where n≥2, with A,B1,Bn being trigonometric polynomials of degree at most μ≥1 in variables θ and Bn(θ)≢0.
Claudia Valls
doaj   +2 more sources

The natural algorithmic approach of mixed trigonometric-polynomial problems [PDF]

open access: yesJournal of Inequalities and Applications, 2017
The aim of this paper is to present a new algorithm for proving mixed trigonometric-polynomial inequalities of the form ∑ i = 1 n α i x p i cos q i x sin r i x > 0 $$\sum_{i=1}^{n}\alpha _{i}x^{p_{i}} \cos ^{q_{i}} x\sin ^{r_{i}} x>0 $$ by reducing them ...
Tatjana Lutovac   +2 more
doaj   +2 more sources

Trigonometric polynomial solutions of equivariant trigonometric polynomial Abel differential equations

open access: yesElectronic Journal of Differential Equations, 2017
Let $A(\theta)$ non-constant and $B_j(\theta)$ for $j=0,1,2,3$ be real trigonometric polynomials of degree at most $\eta \ge 1$ in the variable x. Then the real equivariant trigonometric polynomial Abel differential equations $A(\theta) y' =B_1(\theta)
Claudia Valls
doaj   +2 more sources

When Is a Trigonometric Polynomial Not a Trigonometric Polynomial? [PDF]

open access: yesThe American Mathematical Monthly, 2012
3 ...
Borzellino, Joseph E., Sherman, Morgan
openaire   +3 more sources

Deterministic and random approximation by the combination of algebraic polynomials and trigonometric polynomials

open access: yesOpen Mathematics, 2021
Fourier approximation plays a key role in qualitative theory of deterministic and random differential equations. In this paper, we will develop a new approximation tool.
Zhang Zhihua
doaj   +1 more source

Proposing a New Theorem to Determine If an Algebraic Polynomial Is Nonnegative in an Interval

open access: yesMathematics, 2021
We face the problem to determine whether an algebraic polynomial is nonnegative in an interval the Yau Number Theoretic Conjecture and Yau Geometric Conjecture is proved.
Ke-Pao Lin   +3 more
doaj   +1 more source

High Performance Implementation and Optimization of Trigonometric Functions Based on SIMD [PDF]

open access: yesJisuanji kexue, 2021
As a basic mathematical operation,the high-performance implementation of trigonometric functions is of great significance to the construction of the basic software ecology of the processor.Especially,the current processors have adopted the SIMD ...
YAO Jian-yu, ZHANG Yi-wei, ZHANG Guang-ting, JIA Hai-peng
doaj   +1 more source

Parameter N Analysis on the Rational-Talbot Algorithm for Numerical Inversion of Laplace Transform

open access: yesVetor, 2021
This article investigates the numerical inversion of the Laplace Transform by the Rational-Talbot method and analyzes the influence on the variation of the free parameter N established by the technique when applied to certain functions.
Elisandra Freitas   +4 more
doaj   +5 more sources

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