Nurmuhammad et al. developed the Sinc-Nystr\"{o}m methods for initial value problems in which the solutions exhibit exponential decay end behavior. In these methods, the Single-Exponential (SE) transformation or the Double-Exponential (DE) transformation is combined with the Sinc approximation. Hara and Okayama improved on these transformations to attain a better convergence rate, which was later supported by theoretical error analyses. However, these methods have a computational drawback owing to the inclusion of a special function in the basis functions. To address this issue, Okayama and Hara proposed Sinc-collocation methods, which do not include any special function in the basis functions. This study conducts error analyses of these methods.
翻译:Nurmuhammad等人针对解呈现指数衰减末端行为的初值问题提出了Sinc-Nyström方法。这些方法将单指数(SE)变换或双指数(DE)变换与Sinc逼近相结合。Hara和Okayama改进了这些变换以获得更好的收敛速度,后续的理论误差分析也支持了该结论。然而,由于基函数中包含特殊函数,这些方法存在计算缺陷。为解决该问题,Okayama和Hara提出了基函数不含任何特殊函数的Sinc配置方法。本研究对这些方法进行了误差分析。