Authors: Agarwal, Pankaj K.¹ pankaj@cs.duke.edu, Har-Peled, Sariel² sariel@uiuc.edu, Varadarajan, Kasturi R.³ kvaradar@cs.uiowa

Superior Title: Journal of the ACM. Jul2004, Vol. 51 Issue 4, p0-635. 30p. 6 Diagrams, 1 Chart.

Subject Terms: *APPROXIMATION theory, *FUNCTIONAL analysis, *ALGORITHMS, SPHERES