Multilevel additive Schwarz preconditioner for nonconforming mortar finite element methods

  title={Multilevel additive Schwarz preconditioner for nonconforming mortar finite element methods},
  author={Maksymilian Dryja and Andreas Gantner and Olof B. Widlund and Barbara I. Wohlmuth},
  journal={J. Num. Math.},
Mortar elements form a family of special non-overlapping domain decomposition methods which allows the coupling of different triangulations across subdomain boundaries. We discuss and analyze a multilevel preconditioner for mortar finite elements on nonmatching triangulations. The analysis is carried out within the abstract framework of additive Schwarz methods. Numerical results show a performance of our preconditioner as predicted by the theory. Our condition number estimate depends… CONTINUE READING
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