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Coordinate Order of Approximation by Functional-Based Approximation Operators
Journal of Approximation Theory, 1995 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Burchard, H.G., Lei, J.J.
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The approximation of Laplace-Stieltjes transforms with finite order
Journal of Inequalities and Applications, 2017 In this paper, we study the irregular growth of an entire function defined by the Laplace-Stieltjes transform of finite order convergent in the whole complex plane and obtain some results about λ-lower type.
Hong Yan Xu, San Yan Liu
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Approximation of Fractional Order PIλDμ-Controller Transfer Function Using Chain Fractions
Energies, 2022 The approximation of a fractional order PIλDμ-controller transfer function using a chain fraction theory is considered. Analytical expressions for the approximation of s±α components of the transfer functions of PIλDμ-controllers were obtained through ...
Yaroslav Marushchak +5 more
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Учёные записки Казанского университета: Серия Физико-математические науки, 2017 The paper deals with the construction of high-order accuracy finite element schemes for the fourth-order ordinary differential equation with degenerate coefficients on the boundary.
A.A. Sobolev, M.R. Timerbaev
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Non-Integer Order Approximation of a PID-Type Controller for Boost Converters
Energies, 2021 In this work, the voltage regulation of a boost converter is addressed. A non-integer order PID controller is proposed to deal with the closed-loop instability of the system.
Allan G. S. Sánchez +3 more
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Approximation Order for Multivariate Durrmeyer Operators with Jacobi Weights
Abstract and Applied Analysis, 2011 Using the equivalence relation between K-functional and modulus of smoothness, we establish a strong direct theorem and an inverse theorem of weak type for multivariate Bernstein-Durrmeyer operators with Jacobi weights on a simplex in this paper. We also
Jianjun Wang, Chan-Yun Yang, Shukai Duan
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Optimal order for approximation of derivatives
Journal of Computer and System Sciences, 1979 AbstractIn this note, we show that the central difference formula for approximating f′(0) using the information {f(jh): −r ⩽j ⩽r} has maximal order of accuracy among all algorithms using this information. The technique used is an adaptation of the order-of-information approach of Wozniakowski.
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Contextual Approximation and Higher-Order Procedures [PDF]
, 2016 We investigate the complexity of deciding contextual approximation (refinement) in finitary Idealized Algol, a prototypical language combining higher-order types with state. Earlier work in the area established the borderline between decidable and undecidable cases, and focussed on the complexity of deciding approximation between terms in normal form ...
Ranko Lazic 0001, Andrzej S. Murawski
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Numerical approximation of Newell-Whitehead-Segel equation of fractional order
Nonlinear Engineering, 2016 The aim of the present work is to propose a user friendly approach based on homotopy analysis method combined with Sumudu transform method to drive analytical and numerical solutions of the fractional Newell-Whitehead-Segel amplitude equation which ...
Kumar Devendra, Sharma Ram Prakash
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The approximation order of polysplines [PDF]
Proceedings of the American Mathematical Society, 2003 We show that the scaling spaces defined by the polysplines of order p p provide approximation order
Kounchev, Ognyan, Render, Hermann
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