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ASYMPTOTICS OF A GAUSS HYPERGEOMETRIC FUNCTION WITH TWO LARGE PARAMETERS: A NEW CASE
The ANZIAM Journal ( IF 0.9 ) Pub Date : 2019-12-10 , DOI: 10.1017/s1446181119000166 J. F. HARPER
The ANZIAM Journal ( IF 0.9 ) Pub Date : 2019-12-10 , DOI: 10.1017/s1446181119000166 J. F. HARPER
Asymptotic expansions of the Gauss hypergeometric function with large parameters, $F(\unicode[STIX]{x1D6FC}+\unicode[STIX]{x1D716}_{1}\unicode[STIX]{x1D70F},\unicode[STIX]{x1D6FD}+\unicode[STIX]{x1D716}_{2}\unicode[STIX]{x1D70F};\unicode[STIX]{x1D6FE}+\unicode[STIX]{x1D716}_{3}\unicode[STIX]{x1D70F};z)$ as $|\unicode[STIX]{x1D70F}|\rightarrow \infty$ , are known for many special cases, but not for one that the author encountered in recent work on fluid mechanics: $\unicode[STIX]{x1D716}_{2}=0$ and $\unicode[STIX]{x1D716}_{3}=\unicode[STIX]{x1D716}_{1}z$ . This paper gives the leading term for that case if $\unicode[STIX]{x1D6FD}$ is not a negative integer and $z$ is not on the branch cut $[1,\infty )$ , and it shows how subsequent terms can be found.
中文翻译:
具有两个大参数的高斯超几何函数的渐近:一个新案例
大参数高斯超几何函数的渐近展开,$F(\unicode[STIX]{x1D6FC}+\unicode[STIX]{x1D716}_{1}\unicode[STIX]{x1D70F},\unicode[STIX]{x1D6FD}+\unicode[STIX]{x1D716} _{2}\unicode[STIX]{x1D70F};\unicode[STIX]{x1D6FE}+\unicode[STIX]{x1D716}_{3}\unicode[STIX]{x1D70F};z)$ 作为$|\unicode[STIX]{x1D70F}|\rightarrow \infty$ ,以许多特殊情况而闻名,但不是作者在最近的流体力学工作中遇到的一种情况:$\unicode[STIX]{x1D716}_{2}=0$ 和$\unicode[STIX]{x1D716}_{3}=\unicode[STIX]{x1D716}_{1}z$ . 本文给出了该案例的主要术语,如果$\unicode[STIX]{x1D6FD}$ 不是负整数并且$z$ 不在树枝上$[1,\infty)$ ,它显示了如何找到后续项。
更新日期:2019-12-10
中文翻译:
具有两个大参数的高斯超几何函数的渐近:一个新案例
大参数高斯超几何函数的渐近展开,