TY - JOUR
AB - The writhing number measures the global geometry of a closed space curve or knot. We show that this measure is related to the average winding number of its Gauss map. Using this relationship, we give an algorithm for computing the writhing number for a polygonal knot with n edges in time roughly proportional to n(1.6). We also implement a different, simple algorithm and provide experimental evidence for its practical efficiency.
AU - Agarwal, Pankaj K
AU - Herbert Edelsbrunner
AU - Wang, Yusu
ID - 3990
IS - 1
JF - Discrete & Computational Geometry
TI - Computing the writhing number of a polygonal knot
VL - 32
ER -