%0 Journal Article
%T Homotopies using conformal transformation with invariant total normal twist
%A El-Said R. Lashin
%A Tarek F. Mersal
%J Le Matematiche
%D 1999
%I University of Catania
%X The aim of this paper is to detect a homotopy to a spherical curve with invariant total normal twist 0. Also, we use conformal transformation to prove a theorem that for any immersed closed C^3 -curve c in the Euclidean 3-space E^3 with vanishing total normal twist, there exists a Frenet curve   homotopic to c in an arbitrary neighborhood of c such that the total normal twist is invariant along the homotopy between c and   in that neighborhood.
%U http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/326