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New representations of Pade, Pade-type, and partial Pade approximants

机译:Pade,Pade类型和部分Pade近似值的新表示形式

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Pade approximants are rational functions, with a denominator which does not vanish at zero, and whose series expansion match a given series as far as possible. These approximants are usually written under a rational form. In this paper, we will show how to write them also under two different barycentric forms, and under a partial fraction form, depending on free parameters. According to the choice of these parameters, Pade-type approximants can be obtained under a barycentric or a partial fraction form. (C) 2014 Elsevier B.V. All rights reserved.
机译:Pade近似值是有理函数,分母不为零,并且其级数展开尽可能匹配给定的级数。这些近似值通常以有理形式编写。在本文中,我们将展示如何根据自由参数以两种不同的重心形式和部分分数形式来编写它们。根据这些参数的选择,可以在重心或部分分数形式下获得Pade型近似值。 (C)2014 Elsevier B.V.保留所有权利。

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