Product Descr iption Our first knowledge of differential geometry usually comes from the study of the curves and surfaces in $I\!\!R^3$ that arise in calculus. Here we learn about line and surface integrals, divergence and curl, and the various form
This article provides a historical account of the major developments in the area of curves and surfaces as they entered the area of CAGD { Computer Aided Geometric Design { until the middle 1980s. We adopt the de nition that CAGD deals with the cons