Duchon, Jean Splines minimizing rotation-invariant semi-norms in Sobolev spaces. (English) Zbl 0342.41012 Constr. Theory Funct. several Variables, Proc. Conf. Oberwolfach 1976, Lect. Notes Math. 571, 85-100 (1977). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 ReviewsCited in 81 Documents MathOverflow Questions: Proof that elements of Beppo-Levi-like spaces are functions (and not just distributions)? MSC: 41A15 Spline approximation 46E35 Sobolev spaces and other spaces of “smooth” functions, embedding theorems, trace theorems 41A65 Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) PDF BibTeX XML