Publications in Scientific Journals:

W. Auzinger, O. Koch:
"An improved local error estimator for symmetric time-stepping schemes";
Applied Mathematics Letters, 82 (2018), 106 - 110.

English abstract:
We propose a symmetrized version of the defect to be used in the estimation of the local time-stepping error of symmetric one-step methods for the time propagation of linear autonomous evolution equations. Using the anti-commutator of the numerical flow and the right-hand side operator in the definition of the defect of the numerical approximation, a local error estimator is obtained which has higher accuracy asymptotically than an established version using the common defect. This theoretical result is illustrated for a splitting method applied to a linear Schrödinger equation.

numerical time integration, one-step methods, symmetric schemes, local error estimation

"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)

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