Achdou, Yves; Maday, Yvon; Widlund, Olof Iterative substructuring methods for the mortar elements. (Méthode itérative de sous-structuration pour les éléments avec joints.) (French. Abridged English version) Zbl 0836.65118 C. R. Acad. Sci., Paris, Sér. I 322, No. 2, 185-190 (1996). Summary: For elliptic problems, the mortar method lets us couple different discretizations in different subdomains. For problems in the plane, we propose an iterative substructuring algorithm for the efficient solution of the linear systems arising from this methods. Cited in 2 Documents MSC: 65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs 65N55 Multigrid methods; domain decomposition for boundary value problems involving PDEs 65F10 Iterative numerical methods for linear systems 35J25 Boundary value problems for second-order elliptic equations Keywords:second-order elliptic; finite element; Galerkin approximation; spectral approximations; mortar method; iterative substructuring algorithm PDFBibTeX XMLCite \textit{Y. Achdou} et al., C. R. Acad. Sci., Paris, Sér. I 322, No. 2, 185--190 (1996; Zbl 0836.65118)