in which the diagonal entries of the triangular factors are defined. A comparison is given with
the dynamic modified incomplete factorization methods of Axelsson–Barker and Beauwens,
and with the relaxed incomplete Cholesky method of Axelsson and Lindskog. Theoretical
arguments show that the new method is at least as robust as both previous ones, while
numerical experiments made in the discrete PDE context show an effective improvement in …