Interpolation error estimates for the reduced Hsieh-Clough-Tocher triangle. (English) Zbl 0378.65010


65D05 Numerical interpolation
65N15 Error bounds for boundary value problems involving PDEs
65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs
41A25 Rate of convergence, degree of approximation
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