Speaker
Description
In this talk, we are concerned with the numerical solution of stiff ordinary differential equations by Runge-Kutta methods. A B-convergence result on infinite time intervals is provided for algebraically stable methods applied to strictly dissipative systems. As an application of this result, the $s$-stage Radau IIA methods are proved to be B-convergent of order $s$ on infinite time intervals, and the $s$-stage Radau IA and Lobatto IIIC methods are B-convergent of order $s-1$ on infinite time intervals. Compared to Theorem 15.3 in the monograph [1] by Hairer and Wanner, the error bounds obtained here are independent of the length of the integration interval and are applicable to infinite time intervals.
[1] E. Hairer and G. Wanner, Solving ordinary differential equations. II. Stiff and differential-algebraic problems. Second edition. Springer Series in Computational Mathematics, 14. Springer-Verlag, Berlin, 1996.