Results 21 to 30 of about 277,530 (147)

The Chebyshev Set Problem in Riesz Space

open access: yesJournal of Function Spaces, 2022
In this paper, we mainly study the best approximation theory in Riesz space, which is not constructed by the norm, but only rely on the order structure.
Shengwei Wu   +4 more
doaj   +1 more source

Direct Estimate for Some Operators of Durrmeyer Type in Exponential Weighted Space

open access: yesDemonstratio Mathematica, 2014
In the present paper, we investigate the convergence and the approximation order of some Durrmeyer type operators in exponential weighted space. Furthermore, we obtain the Voronovskaya type theorem for these operators.
Krech Grażyna, Wachnicki Eugeniusz
doaj   +1 more source

Approximate Partial Order Reduction [PDF]

open access: yes, 2018
23 pages, 5 figures. Accepted at 22nd International Symposium on Formal Methods (FM 2018)
Fan, Chuchu, Huang, Zhenqi, Mitra, Sayan
openaire   +2 more sources

HIGHER-ORDER GEOSTROPHIC WIND APPROXIMATIONS

open access: yesMonthly Weather Review, 1962
Abstract Two iterative methods are described for obtaining horizontal winds from the pressure-height field by means of higher-order geostrophic approximations for the purpose of improving upon the geostrophic wind. The convergence properties of the iterative methods are discussed; and in a simple theoretical case, one of the methods is found to diverge
Arnason, G.   +2 more
openaire   +2 more sources

Coordinate Order of Approximation by Functional-Based Approximation Operators

open access: yesJournal of Approximation Theory, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Burchard, H.G., Lei, J.J.
openaire   +2 more sources

Approximation Solution for Fuzzy Fractional-Order Partial Differential Equations

open access: yesFractal and Fractional, 2022
In this article, the authors study the comparison of the generalization differential transform method (DTM) and fuzzy variational iteration method (VIM) applied to determining the approximate analytic solutions of fuzzy fractional KdV, K(2,2) and mKdV ...
Mawia Osman   +4 more
doaj   +1 more source

Small-angle scattering and quasiclassical approximation beyond leading order

open access: yesPhysics Letters B, 2015
In the present paper we examine the accuracy of the quasiclassical approach on the example of small-angle electron elastic scattering. Using the quasiclassical approach, we derive the differential cross section and the Sherman function for arbitrary ...
P.A. Krachkov, R.N. Lee, A.I. Milstein
doaj   +1 more source

Link Travel Time Estimation in Double-Queue-Based Traffic Models

open access: yesPromet (Zagreb), 2021
Double queue concept has gained its popularity in dynamic user equilibrium (DUE) modeling because it can properly model real traffic dynamics. While directly solving such double-queue-based DUE problems is extremely challenging, an approximation scheme ...
Xia Yang   +3 more
doaj   +1 more source

Biermann interpolation of Birkhoff type

open access: yesJournal of Numerical Analysis and Approximation Theory, 2005
If \(P_{0},P_{1},...,P_{r}\) and \(Q_{0},Q_{1},...,Q_{r}\) are Birkhoff univariate projectors which form the chains\[P_{0}\le P_{1}\le\dots\le P_{r},\quad Q_{0}\le Q_{1}\le\dots\le Q_{r},\]we can define the Biermann operator of Birkhoff type\[B_{r}^{B ...
Marius Birou
doaj   +2 more sources

Frequency Response Based Curve Fitting Approximation of Fractional–Order PID Controllers

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2019
Fractional-order PID (FOPID) controllers have been used extensively in many control applications to achieve robust control performance. To implement these controllers, curve fitting approximation techniques are widely employed to obtain integer-order ...
Bingi Kishore   +4 more
doaj   +1 more source

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