Geodesic
Improved convergence estimate for a multiply polynomially smoothed two-level method with an aggressive coarsening
Applications of Mathematics, Tome 63 (2018) no. 6, pp. 629-641

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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.
DOI : 10.21136/AM.2018.0314-17
Classification : 65F10, 65M55
Keywords: two-level method; aggressive coarsening; smoothed aggregation; polynomial smoother; convergence analysis 
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     title = {Improved convergence estimate for a multiply polynomially smoothed two-level method with an aggressive coarsening},
     journal = {Applications of Mathematics},
     pages = {629--641},
     publisher = {mathdoc},
     volume = {63},
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Tezaur, Radek; Vaněk, Petr. Improved convergence estimate for a multiply polynomially smoothed two-level method with an aggressive coarsening. Applications of Mathematics, Tome 63 (2018) no. 6, pp. 629-641. doi: 10.21136/AM.2018.0314-17

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