A posteriori analysis for Petrov - Galerkin approximationsof Friedrichs systems
نویسنده
چکیده
Using a decomposition of the global error into a locally created part and a propagating component, we derive residual-based two-sided local a posteriori error bounds for the locally created component of the global error for Petrov-Galerkin approximations of symmetric positive systems in the sense of Friedrichs. The performance of the a local error indicators is illustrated by a series of numerical experiments.
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