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Superconvergence of the gradient of finite element solutions. (English) Zbl 0412.65051

MSC:
65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs
65D05 Numerical interpolation
65L10 Numerical solution of boundary value problems involving ordinary differential equations
35A15 Variational methods applied to PDEs
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References:
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[9] 9 M ZLAMAL, Some Superconvergence Results in the Finite Element Method Mathematical Aspects of Finite Element Methods Springer Verlag, Berlin, Heidelberg, New York, 1977, pp 353-362 Zbl0366.65050 MR488863 · Zbl 0366.65050
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