Abstract
This paper is devoted to the construction of a new multilevel preconditioner for operators discretized using finite differences. It uses the basic ingredients of a multiscale construction of the inverse of a variable coefficient elliptic differential operator derived by Tchamitchian [19]. It can be implemented fast and can therefore be easily incorporated in finite difference solvers for elliptic PDEs. Theoretical results, as well as numerical tests and implementation technical details are presented.
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Communicated by Y. Xu
This work has been partially supported by TMR Research Network Contract FMRX-CT98-0184.
AMS subject classification
00A69, 65T60, 65Y99, 15A12
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Piquemal, AS., Liandrat, J. A new wavelet preconditioner for finite difference operators. Adv Comput Math 22, 125–163 (2005). https://doi.org/10.1007/s10444-004-1111-6
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DOI: https://doi.org/10.1007/s10444-004-1111-6