Cheney, E. W. Approximation by functions of nonclassical form. (English) Zbl 0751.41001 Approximation theory, spline functions and applications, Proc. NATO Adv. Study Inst., Maratea/Italy 1991, NATO ASI Ser., Ser. C 356, 1-18 (1992). Summary: [For the entire collection see Zbl 0741.00080.] This paper summarizes four expository lectures on these topics: (1) Interpolation on the circle, (2) Interpolation on higher-dimensional spheres, (3) Interpolation on Euclidean spaces, and (4) Ridge functions. Cited in 2 Documents MSC: 41A05 Interpolation in approximation theory 41A30 Approximation by other special function classes Keywords:Ridge functions PDF BibTeX XML Cite \textit{E. W. Cheney}, in: Approximation theory, spline functions and applications. Proceedings of the NATO Advanced Study Institute, held in Maratea, Italy, April 28-May 9, 1991. Dordrecht etc.: Kluwer Academic Publishers. 1--18 (1992; Zbl 0751.41001)