Improved convergence estimate for a multiply polynomially smoothed two-level method with an aggressive coarsening
- 21 Downloads
A variational two-level method in the class of methods with an aggressive coarsening and a massive polynomial smoothing is proposed. The method is a modification of the method of Section 5 of Tezaur, Vaněk (2018). Compared to that method, a significantly sharper estimate is proved while requiring only slightly more computational work.
Keywordstwo-level method aggressive coarsening smoothed aggregation polynomial smoother convergence analysis
MSC 201065F10 65M55
Unable to display preview. Download preview PDF.
- P. G. Ciarlet: The Finite Element Method for Elliptic Problems. Studies in Mathematics and Its Applications 4, North–Holland Publishing Company, Amsterdam, 1978.Google Scholar