A parabolic cyclide formed by inversion of a horn torus when the inversion sphere is tangent to the torus.
Parabolic Horn Cyclide
See also
Cyclide, Inversion, Inversion Sphere, Parabolic Ring Cyclide, Parabolic Spindle CyclideExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Parabolic Horn Cyclide." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ParabolicHornCyclide.html