On restricted derivative approximation
Zi-Xiao Yang, Bu-Xi Li (1990)
Compositio Mathematica
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Displaying similar documents to “Polynomial approximations and universality”
On restricted derivative approximation
Polynomial approximation to integral transforms
N. K. Basu (1971)
Applicationes Mathematicae
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Trigonometric Polynomial Approximation in the L1-Form.
Franz Peherstorfer (1979)
Mathematische Zeitschrift
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Greedy Algorithms for Adaptive Approximation
Albert Cohen (2009)
Bollettino dell'Unione Matematica Italiana
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We discuss the performances of greedy algorithms for two problems of numerical approximation. The first one is the best approximation of an arbitrary function by an N-terms linear combination of simple functions adaptively picked within a large dictionary. The second one is the approximation of an arbitrary function by a piecewise polynomial function on an optimally adapted triangulation of cardinality N. Performance is measured in terms of convergence rate with respect to the number...
On a theorem of Ky Fan
Fernando Cobos (1988)
Colloquium Mathematicae
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On an approximation of function and its derivatives.
J. Prasad (1972)
Publications de l'Institut Mathématique [Elektronische Ressource]
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Approximation of a map between one-dimensional Teichmüller spaces.
Matthews, Charles A. (2001)
Experimental Mathematics
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An extension of approximation theorems
Jiři Močkoř (1975)
Colloquium Mathematicae
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Hausdorff Approximation of Functions Different from Zero at One Point - Implementation in Programming Environment Mathematica
Kyurkchiev, Nikolay, Andreev, Andrey (2013)
Serdica Journal of Computing
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ACM Computing Classification System (1998): G.1.2. Moduli for numerical finding of the polynomial of the best Hausdorff approximation of the functions which differs from zero at just one point or having one jump and partially constant in programming environment MATHEMATICA are proposed. They are tested for practically important functions and the results are graphically illustrated. These moduli can be used for scientific research as well in teaching process of Approximation...
Approximation of functions possessing derivatives of positive orders
R. Taberski (1977)
Annales Polonici Mathematici
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Simultaneous approximation to a real number and to its cube by rational numbers
Stéphane Lozier, Damien Roy (2012)
Acta Arithmetica
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On approximation with nodes
S. Paszkowski
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CONTENTSIntroduction1. Approximation with nodes............................................................................................. 32. Characteristic property of the optimal polynomial......................................................... 43. Notation......................................................................................................................... 5CHAPTER I. Limit properties of approximation with nodes4. Statement of the problem.................................................................................................
Bernstein polynomial is a best approximation polynomial?
Lupaş, Alexandru (1998)
General Mathematics
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An inverse approximation theorem on subsets of elliptic curves.
Khaustov, A.V., Shirokov, N.A. (2004)
Zapiski Nauchnykh Seminarov POMI
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Completeness and approximation
P. L. Papini (1987)
Matematički Vesnik
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Asymptotic differential approximation ratio: Definitions, motivations and application to some combinatorial problems
Marc Demange, Vangelis Th. Paschos (2010)
RAIRO - Operations Research
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We first motivate and define a notion of asymptotic differential approximation ratio. For this, we introduce a new class of problems called radial problems including in particular the hereditary ones. Next, we validate the definition of the asymptotic differential approximation ratio by proving positive, conditional and negative approximation results for some combinatorial problems. We first derive a differential approximation analysis of a classical greedy algorithm for bin packing,...