Abstract
VPAStab( J , L ) denotes an iterative method designed to give an accurate numerical solution of a large sparse system of linear equations. The iteration comprises L -steps and possibly jump-steps. An L -step involves stabilisation (minimisation) over an L -dimensional subspace following L levels of vector-Padé approximation. A jump-step (look-ahead stage) avoids near-breakdowns by jumping past them by J levels simultaneously. A numerical implementation of VPAStab( 2 , L ) is considered in the context of some well-known examples.
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