Local Error Bounds for Post - Processed Finite
نویسندگان
چکیده
In this paper we produce tight guaranteed bounds for the error in the pointwise values of the derivatives of a post-processed nite element solution to a potential ow problem. The aim is to produce a tight envelope of certainty within which the exact value is guaranteed to lie. Our numerical experiments produce narrow envelopes at interior points and at points close to or on the boundary.
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