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A multi region finite difference method is described and applied to the one dimension, semi linear, singularly perturbed boundary value problem (SPBVP). The process of developing high precision algorithms for this problem is described and it is shown that when the multi region method is combined with the use of these high order algorithms, numerical solutions can achieve accuracies in the range of 10-20. This represents a gain of between 9 to 14 orders of magnitude over current techniques.
Date of Conference: 26-29 Sept. 2009