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High Accuracy for Mixes Finite Element Methods in Raviart-Thomas Element |
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| Authors: | Q Lin & J H Pan |
| Abstract: | This paper deals with Raviart-Thomas element ($Q_{2,1}\times Q_{1,2}-Q_1$ element). Apart from its global superconvergence property of fourth order, we prove that a postprocessed extrapolation can globally increased the accuracy by fifth order. |
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