Abstract
New normalized Extended to the Limit sparse factorization procedures in algorithmic form are derived yielding direct and iterative methods for the solution of finite element or finite difference systems of irregular structure. The proposed factorization procedures are chosen as the basis to yield normalized systems on which the Conjugate Gradient and Chebychev methods are implicitly applied. The application of the derived normalized implicit semi-direct methods on a two-dimensional elliptic boundary-value problem is discussed and numerical results are given.
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