next curve  previous curve  2D curves  3D curves  surfaces  fractals  polyhedra 
ASYMPTOTIC LINE OF THE TORUS
open torus 


Toric differential equation: , for the torus .
Toric equation: , with if a > b (open torus) and if a < b (spindle torus).

Note that since the asymptotic lines only pass through hyperbolic points, they only exist in the internal part of the torus.
See also the geodesics of the torus.
next curve  previous curve  2D curves  3D curves  surfaces  fractals  polyhedra 
© Robert FERRÉOL 2018