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arXiv 2005.05737math.CA
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Mittag-Leffler函数$E_a(z)$在负实轴上的渐近性

Asymptotics of the Mittag-Leffler function $E_a(z)$ on the negative real axis when $a\to 1$

R B Paris

摘要:

我们考虑单参数Mittag-Leffler函数$E_a(-x)$对$x\to+\infty$的渐近展开式作为参数$a\to1$ . $0<a<1$时的主要扩展由$O(x^{-1})$的代数扩展(当$a=1$时消失)以及接近$e^{-x}$的指数小贡献(作为$a\to 1$)组成。在这里,我们集中在$a$接近值1时的这种指数小扩展的形式。数值例子来说明这样得到的扩展的准确性。

英文摘要:

We consider the asymptotic expansion of the single-parameter Mittag-Leffler function $E_a(-x)$ for $x\to+\infty$ as the parameter $a\to1$. The dominant expansion when $0<a<1$ consists of an algebraic expansion of $O(x^{-1})$ (which vanishes when $a=1$), together with an exponentially small contribution that approaches $e^{-x}$ as $a\to 1$. Here we concentrate on the form of this exponentially small expansion when $a$ approaches the value 1. Numerical examples are presented to illustrate the accuracy of the expansion so obtained.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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