摘要
本文给出了关于全挠率的一个著名定理:“球面闭曲线的全挠率为零”一个新的简单证法,并且给出了这个定理的两个推广定理.
A new and simple proving method on the famous theorem of total torsion, 'The total torsion of closed spherical curve is zero', and two generalized theorems for the.theorem are presented in the paper.
出处
《吉林师范大学学报(自然科学版)》
1991年第2期34-36,共3页
Journal of Jilin Normal University:Natural Science Edition
关键词
全挠率
球面闭曲线
曲率线
Total torsion, Closed spherical curve, Line of curvature.