An Incomplete Factorization Preconditioning Method for Fem-discretized Partial Diierential Equations Based on Modiication of Element Matrices

@inproceedings{Gustafsson1996AnIF,
  title={An Incomplete Factorization Preconditioning Method for Fem-discretized Partial Diierential Equations Based on Modiication of Element Matrices},
  author={Ivar Gustafsson},
  year={1996}
}
It is well known that standard incomplete factorization (IC) methods exist for M-matrices 14] and that modiied incomplete factorization (MIC) methods exist for weakly diagonally dominant matrices 8]. The restriction to these classes of matrices excludes many realistic general applications to discretized partial diieren-tial equations. We present a technique to avoid this problem by making an initial modiication already at the element level, followed by the standard IC or MIC fac-torization of… CONTINUE READING