Strang, Gilbert The dimension of piecewise polynomial spaces, and one-sided approximation. (English) Zbl 0279.65091 Confer. numer. Solution differ. Equations, Dundee 1973, Lect. Notes Math. 363, 144-152 (1974). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 6 Documents MSC: 65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs 65D10 Numerical smoothing, curve fitting 65D15 Algorithms for approximation of functions 41A15 Spline approximation 41A25 Rate of convergence, degree of approximation 35J20 Variational methods for second-order elliptic equations PDF BibTeX XML