On the reversion of an asymptotic expansion and the zeros of the airy functions

被引:22
作者
Fabijonas, BR
Olver, FWJ
机构
[1] Natl Inst Stand & Technol, Math & Computat Sci Div, Gaithersburg, MD 20899 USA
[2] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA
[3] Univ Maryland, Dept Math, College Pk, MD 20742 USA
关键词
airy functions; asymptotic expansions; error bounds; inversion theorems; Lagrange's reversion theorem; phase principle; principle of the argument; symbolic computation; zeros;
D O I
10.1137/S0036144598349538
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The general theories of the derivation of inverses of functions from their power series and asymptotic expansions are discussed and compared. The asymptotic theory is applied to obtain asymptotic expansions of the zeros of the Airy functions and their derivatives, and also of the associated values of the functions or derivatives. A Maple code is constructed to generate exactly the coefficients in these expansions. The only limits on the number of coefficients are those imposed by the capacity of the computer being used and the execution time that is available. The sign patterns of the coefficients suggest open problems pertaining to error bounds for the asymptotic expansions of the zeros and stationary values of the Airy functions.
引用
收藏
页码:762 / 773
页数:12
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