Stability of collocation methods for delay differential equations with vanishing delays
We analyze the asymptotic stability of collocation solutions in spaces of globally continuous piecewise polynomials on uniform meshes for linear delay differential equations with vanishing proportional delay qt (0 < q < 1) (pantograph DDEs). It is shown that if the collocation points are such that the analogous collocation solution for ODEs is A-stable, then this asymptotic behaviour is inherited by the collocation solution for the pantograph DDE.
collocation methods delay differential equations pantograph equation proportional vanishing delay implicit runge-kutta methods asymptotic stability on uniform meshes