Higher order FE schemes for the wave equation

A paper has recently appeared in Mathematics of Computations:

Post-processed Galerkin approximation of improved order for wave equations by M. Bause, U. Koecher, F.A. Radu and F. Schieweck,

https://www.ams.org/journals/mcom/2020-89-322/S0025-5718-2019-03464-6/home.html

The paper is about higher order FE schemes in time and space for the wave equation. The main point is the introduction of a post processing to increase the order of convergence in time. Rigorous analysis and numerical experiments are presented.

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