Multigrid for Qk Finite Element Matrices Using a (Block) Toeplitz Symbol Approach

In the present paper, we consider multigrid strategies for the resolution of linear systems arising from the Qk Finite Elements approximation of one- and higher-dimensional elliptic partial differential equations with Dirichlet boundary conditions and where the operator is div−a(x)∇·, with a continu...

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Veröffentlicht in:	Mathematics (Basel) 2020-01, Vol.8 (1), p.5
Hauptverfasser:	Ferrari, Paola, Ryma Imene Rahla, Tablino-Possio, Cristina, Belhaj, Skander, Serra-Capizzano, Stefano
Format:	Artikel
Sprache:	eng
Schlagworte:	Approximation Boundary conditions Dirichlet problem Eigenvalues Elliptic functions Iterative methods Linear systems Mathematical analysis Methods Operators (mathematics) Partial differential equations Polynomials Robustness (mathematics)
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