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Chebyshev Knots [PDF]

open access: yesJournal of Knot Theory and Its Ramifications, 2010
A Chebyshev knot is a knot which admits a parametrization of the form $ x(t)=T_a(t); \ y(t)=T_b(t) ; \ z(t)= T_c(t + \phi), $ where $a,b,c$ are pairwise coprime, $T_n(t)$ is the Chebyshev polynomial of degree $n,$ and $\phi \in \RR .$ Chebyshev knots are
Koseleff, Pierre-Vincent, Pecker, Daniel
core   +8 more sources

On products of conjugacy classes in general linear groups [PDF]

open access: yesInternational Journal of Group Theory, 2022
Let $K$ be a field and $n\geq 3$. Let $E_n(K)\leq H\leq GL_n(K)$ be an intermediate group and $C$ a noncentral $H$-class. Define $m(C)$ as the minimal positive integer $m$ such that $\exists i_1,\ldots,i_m\in\{\pm 1\}$ such that the product $C^{i_1 ...
Raimund Preusser
doaj   +1 more source

Resolución de ecuaciones trascendentes de la física mediante el método de Chebyshev

open access: yesRevista de Enseñanza de la Física, 2022
En este trabajo se proporciona a los docentes de física un método optimizado para resolver ecuaciones trascendentes que no pueden resolverse de manera algebraica y aparecen muy a menudo en cursos de enseñanza superior de física e ingeniería. El método se
David Marqués Villarroya
doaj   +1 more source

Jamming Simulation Analysis of LFM-Chebyshev Chaotic Bi-Phase Code Signal [PDF]

open access: yesHangkong bingqi, 2022
LFM-Chebyshev chaotic bi-phase code signal is a mixed signal which uses Chebyshev chaotic sequence as inter pulse two-phase coding and linear frequency modulation processing in the pulse. It has strong concealment and anti-jamming ability.
Song Quan, Zhang Fan, Xu Hua
doaj   +1 more source

Monitoring of cash execution of the state budget during the implementation of national projects and the choice of economic development directions

open access: yesВестник университета, 2021
The article emphasizes the importance of financial monitoring as an element of control over the implementation of national projects and, in particular, cash execution.
I. I. Chebyshev
doaj   +1 more source

The role of internal audit in the functioning of an effective system of internal control of enterprises

open access: yesВестник университета, 2021
The author carried out research of the list of issues related to the field of internal audit, namely its role in achieving the effectiveness of the internal control system. The article logically emphasizes the significance of the research area, discloses
I. I. Chebyshev
doaj   +1 more source

Approximation Properties of Chebyshev Polynomials in the Legendre Norm

open access: yesMathematics, 2021
In this paper, we present some important approximation properties of Chebyshev polynomials in the Legendre norm. We mainly discuss the Chebyshev interpolation operator at the Chebyshev–Gauss–Lobatto points.
Cuixia Niu   +3 more
doaj   +1 more source

Error bounds of a function related to generalized Lipschitz class via the pseudo-Chebyshev wavelet and its applications in the approximation of functions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2022
In this paper, a new computation method derived to solve the problems of approximation theory. This method is based upon pseudo-Chebyshev wavelet approximations. The pseudo-Chebyshev wavelet is being presented for the first time.
S. Lal   +3 more
doaj   +1 more source

Design of a Wide-Band Microstrip Filtering Antenna with Modified Shaped Slots and SIR Structure

open access: yesInventions, 2020
This paper presents a new compact microstrip filtering antenna with modified shaped slots to improve the impedance bandwidth. The proposed microstrip filtering antenna consists of three parts: the monopole radiating patch antenna; the Stepped Impedance ...
Yasir I. A. Al-Yasir   +7 more
doaj   +1 more source

Wilkinson Polynomials: Accuracy Analysis Based on Numerical Methods of the Taylor Series Derivative

open access: yesDesimal, 2020
Some of the numeric methods for solutions of non-linear equations are taken from a derivative of the Taylor series, one of which is the Newton-Raphson method. However, this is not the only method for solving cases of non-linear equations.
Vera Mandailina   +4 more
doaj   +1 more source

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