Improved convergence estimate for a multiply polynomially smoothed two-level method with an aggressive coarsening |
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| Authors: | Radek Tezaur Petr Vaněk |
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| Affiliation: | 1.Department of Aeronautics and Astronautics,Stanford University,Stanford,USA;2.Department of Mathematics,University of West Bohemia,Plzeň,Czech Republic |
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| Abstract: | 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. |
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