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Wavelet stabilization and preconditioning for domain decomposition. (English) Zbl 0966.65076

Wavelets are used to circumvent the usual inf-sup-conditions needed for the stability of the discretization of the three fields formulation for domain decomposition methods. The resulting discrete problem additionally admits an optimal preconditioner.

MSC:

65N12 Stability and convergence of numerical methods for boundary value problems involving PDEs
65T60 Numerical methods for wavelets
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
35J25 Boundary value problems for second-order elliptic equations