Publications in Scientific Journals:

W. Auzinger, H. Hofstätter, O. Koch, W. Kreuzer, E. Weinmüller:
"Superconvergent Defect Correction Algorithms";
WSEAS transactions on Systems, 3 (2004), 1378 - 1383.

English abstract:
In this paper we discuss several variants of the acceleration technique known as Iterated Defect Correction (IDeC) for the numerical solution of initial value problems for ODEs. A first approximation, computed by a low order basic method, is iteratively improved to obtain higher order solutions. We propose new versions of the IDeC algorithm with maximal achievable (super-)convergence order twice as high as in the classical setting. Moreover, if the basic numerical method is designed for a special type of ODE only, as is the case for many geometric integrators, the idea of classical IDeC is not applicable in a straightforward way. Our approach enables the application of the defect correction principle in such cases as well.

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Created from the Publication Database of the Vienna University of Technology.