Papini, Alessandra One dimensional collocation at Gaussian points and superconvergence at interior nodal points. (English) Zbl 0761.65061 Rend. Ist. Mat. Univ. Trieste 21, No. 2, 224-231 (1989). The author develops a normal extension method of superconvergence at interior nodal points which was recently pointed out by M. Bakker [SIAM J. Numer. Anal. 21, 101-110 (1984; Zbl 0571.65078)]. The already known results in case of two-point boundary value problems are proved in a more general way using general boundary conditions. Reviewer: P.K.Mahanti (Ranchi) MSC: 65L10 Numerical solution of boundary value problems involving ordinary differential equations 65L60 Finite element, Rayleigh-Ritz, Galerkin and collocation methods for ordinary differential equations 34B05 Linear boundary value problems for ordinary differential equations Keywords:superconvergence; two-point boundary value problems; collocation PDF BibTeX XML Cite \textit{A. Papini}, Rend. Ist. Mat. Univ. Trieste 21, No. 2, 224--231 (1989; Zbl 0761.65061)