On Finite Element Approximation of the Gradient for Solution of Poisson Equation
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Neittaanmäki, P., Saranen, J. (1981). On Finite Element Approximation of the Gradient for Solution of Poisson Equation. Numerische Mathematik 37, 333-337. 10.1007/BF01400312
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Numerische MathematikDate
1981Access restrictions
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A nonconforming mixed finite element method is presented for approximation of ∇w with Δw=f,w| r =0. Convergence of the order∥∇w−uh∥0,Ω=O(h2) is proved, when linear finite elements are used. Only the standard regularity assumption on triangulations is needed.
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