A general formulation for incomplete blockwise factorizations
Victor L. Eijkhout · Communications in Applied Numerical Methods · 1988
Abstract In recent times a number of incomplete blockwise factorization methods have appeared. These are used as preconditioners in iterative methods for the solution of linear systems. This note purports to give a general formulation for incomplete factorizations from which they can be derived. Some computational and theoretical aspects will be touched upon.