Extrapolation cascadic multigrid method on piecewise uniform grid

The triangular linear finite elements on piecewise uniform grid for an elliptic problem in convex polygonal domain are discussed. Global superconvergence in discrete H 1 -norm and global extrapolation in discrete L 2 -norm are proved. Based on these global estimates the conjugate gradient method (CG...

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Veröffentlicht in:	Science China. Mathematics 2013-12, Vol.56 (12), p.2711-2722
Hauptverfasser:	Chen, ChuanMiao, Hu, HongLing
Format:	Artikel
Sprache:	eng
Schlagworte:	Applications of Mathematics Astronomy China Conjugate gradient method Estimates Extrapolation Finite element method Mathematical analysis Mathematical models Mathematics Mathematics and Statistics Multigrid methods Series (mathematics)
Online-Zugang:	Volltext
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