Abstract：Let r= r(t) be a regular curve on (a, b) and its torsion is identicallyzero. Is this curve a plane curve? Fristly we consider an example asfollows: We can show that r (t) is a C~∞ regular curve and its torsion is identically zero. But the curve lies in t
出版日期: 1984-09-28
引用本文:
王申怀. 关于空间曲线一定理的注记[J]. 南昌大学学报（理科版）, 1984, 8(03): 1-.
Wang Shen huai Beijing Normal University. . , 1984, 8(03): 1-.
1984, Vol. 8 