论文标题
Kummer高几何功能的渐近扩展具有三个渐近参数$ a $,$ b $和$ z $
Asymptotic expansions of Kummer hypergeometric functions with three asymptotic parameters $a$, $b$ and $z$
论文作者
论文摘要
在最近的一篇论文\ cite {temme:2021:akh}的kummer函数$ m(a,b,z)$和$ u(a,b+1,z)$(a $ a $ a $ a和$ b $)的新渐近扩展中,$ a和$ b $,$ z $,$ z $,并为$ z $固定了$ a \ sim a \ sim b $。在本文中,我们扩展了该方法,也接受$ z $的大量值。当至少一个参数$ a $,$ b $或$ z $很大时,新的扩展是有效的。我们提供数值表以显示扩展的性能。
In a recent paper \cite{Temme:2021:AKH} new asymptotic expansions are given for the Kummer functions $M(a,b,z)$ and $U(a,b+1,z)$ for large positive values of $a$ and $b$, with $z$ fixed and special attention for the case $a\sim b$. In this paper we extend the approach and also accept large values of $z$. The new expansions are valid when at least one of the parameters $a$, $b$, or $z$ is large. We provide numerical tables to show the performance of the expansions.