Abstract
In this paper we study the finite element approximations to the Sobolev and viscoelasticity type equations and present a direct analysis for global superconvergence for these problems, without using Ritz projection or its modified forms.
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Lin, Q., Zhang, S. A direct global superconvergence analysis for Sobolev and viscoelasticity type equations. Applications of Mathematics 42, 23–34 (1997). https://doi.org/10.1023/A:1022288409629
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DOI: https://doi.org/10.1023/A:1022288409629