Superconvergent Derivative Recovery for the Intermediate Nite Element Family of the Second Type
نویسندگان
چکیده
In this work, a recovery technique for the intermediate nite element family of the second type is proposed and analyzed on a second-order elliptic model problem. It is shown that when the pollution error is properly controlled, the convergent rate of the recovered gradient is of two orders higher than the optimal global rate on an interior sub-domain where rectangular meshes of regular type are applied. Some numerical results are provided to connrm the theoretical ndings.
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