Results 11 to 20 of about 1,527,957 (300)
Interval estimation of trigonometrical splines [PDF]
MATEC Web of Conferences, 2019 Quite often, it is necessary to quickly determine variation range of the function. If the function values are known at some points, then it is easy to construct the local spline approximation of this function and use the interval analysis rules.
Burova I.G., Ivanova E.G., Kostin V.A.
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Polynomial Approximation of High-Dimensional Hamilton-Jacobi-Bellman Equations and Applications to Feedback Control of Semilinear Parabolic PDEs [PDF]
SIAM Journal on Scientific Computing, 2017 A procedure for the numerical approximation of high-dimensional Hamilton--Jacobi--Bellman (HJB) equations associated to optimal feedback control problems for semilinear parabolic equations is proposed.
D. Kalise, K. Kunisch
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Spline Approximation, Part 2: From Polynomials in the Monomial Basis to B-splines—A Derivation
Mathematics, 2021 In a series of three articles, spline approximation is presented from a geodetic point of view. In part 1, an introduction to spline approximation of 2D curves was given and the basic methodology of spline approximation was demonstrated using splines ...
Nikolaj Ezhov +2 more
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The Stability Analysis of Linear Systems with Cauchy—Polynomial-Vandermonde Matrices
Axioms, 2023 The numerical approximation of both eigenvalues and singular values corresponding to a class of totally positive Bernstein–Vandermonde matrices, Bernstein–Bezoutian structured matrices, Cauchy—polynomial-Vandermonde structured matrices, and quasi ...
Mutti-Ur Rehman +3 more
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An overview on polynomial approximation of NP-hard problems [PDF]
Yugoslav Journal of Operations Research, 2009 The fact that polynomial time algorithm is very unlikely to be devised for an optimal solving of the NP-hard problems strongly motivates both the researchers and the practitioners to try to solve such problems heuristically, by making a trade-off between
Paschos Vangelis Th.
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Sistemnì Doslìdženâ ta Informacìjnì Tehnologìï, 2023 The new iterative method of approximating the boundary trajectory of a short-focus electron beam propagating in a free drift mode in a low-pressure ionized gas under the condition of compensation of the space charge of electrons is considered and ...
Igor Melnyk, Alina Pochynok
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SN Applied Sciences, 2021 This paper proposes a probabilistic small-signal stability analysis method based on the polynomial approximation approach. Since the correct determination of unknown coefficients has a direct effect on the accuracy of the polynomial approximation method,
Ali Mohammad Tabrizchi +1 more
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Improved Stability Criteria for Time-Varying Delay System Using Second and First Order Polynomials
IEEE Access, 2020 This article concerns the problem of stability analysis of systems with time-varying delay. Recent developments in this direction involves approximation of a second order polynomial function of time-delay.
Sharat Chandra Mahto +5 more
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On the Expediency and Possibilities of Approximating a Pure Delay Link
Информатика и автоматизация, 2022 When solving problems of controlling an object with delay, it is often necessary to approximate a pure delay link with a minimum phase link in order to ensure the possibility of using analytical methods for regulator design.
Vadim Zhmud +5 more
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Convergence of approximating polynomials [PDF]
Proceedings of the 1961 16th ACM national meeting on -, 1961 I. The problem we wish to consider is the following. For each positive integer n, let En be a finite subset of [−1,1] containing at least n points. N For a real valued continuous function f defined on [−1,1] let pn (f, En) be the unique polynomial of degree at most n−1 of best approximation in the Chebycheff sense to f on En. Is it possible to choose a
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