*** Welcome to piglix ***

Clélie


In mathematics, a Clélie or Clelia curve is a curve parameterized by

A curve of this type is confined to the surface of a sphere of radius , as is obvious from the parametric equations for the surface of a sphere. When , this is Viviani's curve.

The curve was named by Luigi Guido Grandi after Clelia Borromeo.



...
Wikipedia

...