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https://doi.org/10.1007/978-94...
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Operator Pade Approximants: Some ideas behind the theory and a numerical illustration

Authors: Cuyt, Annie A.M.;

Operator Pade Approximants: Some ideas behind the theory and a numerical illustration

Abstract

Section 1 will be devoted to the discussion of some generalizations of the concept of Pade-approximant for multivariate functions, based on the interpolation property of a Pade-approximant. Most of those generalizations preserve, under some conditions, a number of properties of the univariate Pade-approximant. In Section 2 we will repeat the recursive schemes used for the computation of the univariate Pade-approximant: the e-algorithm and the qd-algorithm. We will also show that, if a generalizing definition is based on these recursive algorithms, then much more interesting properties remain valid for the generalization. In Section 3 we will illustrate the approximation power of this type of Pade approximants on a numerical example. Other applications are: the solution of nonlinear systems of equations [7], the solution of nonlinear differential and integral equations [3], the acceleration of convergence [4]. Since those applications have already been treated extensively, they will not be mentioned here; the interested reader is referred to the literature.

Country
Belgium
Related Organizations
Keywords

Computer. Automation, Mathematics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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