Error estimates for external approximation of ordinary differential equations and the superconvergence property
Teresa Regińska (1988)
Aplikace matematiky
Similarity:
A pointwise error estimate and an estimate in norm are obtained for a class of external methods approximating boundary value problems. Dependence of a superconvergence phenomenon on the external approximation method is studied. In this general framework, superconvergence at the knot points for piecewise polynomial external methods is established.