The inversion of a ring torus. If the inversion center lies on the torus, then the ring cyclide degenerates to a parabolic ring cyclide.
Ring Cyclide
See also
Cyclide, Inversion, Parabolic Cyclide, Ring Torus, Spindle Cyclide, TorusExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Ring Cyclide." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/RingCyclide.html