Academic Interests
Approximation theory, numerical analysis, geometric modelling.
Research area
My main research in recent years has been on numerical methods for approximation of functions and data. Such methods include data-fitting with polynomials, piecewise polynomials (splines), and rational functions, and the use of recursive subdivision, parameterization, and GBC's. I have recently studied n-width problems and associated optimal spaces. I am on the editorial boards of CAGD and BIT Numerical mathematics.