论文标题

转折点扩展的急剧错误界限

Sharp error bounds for turning point expansions

论文作者

Dunster, T. M., Gil, A., Segura, J.

论文摘要

对于具有简单转折点的线性微分方程的渐近扩展,可计算和尖锐的误差边界。扩展涉及通风函数和缓慢变化的系数函数。边界的清晰度通过数值说明,并应用于大阶的贝塞尔函数。

Computable and sharp error bounds are derived for asymptotic expansions for linear differential equations having a simple turning point. The expansions involve Airy functions and slowly varying coefficient functions. The sharpness of the bounds is illustrated numerically with an application to Bessel functions of large order.

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