A quartic surface named after its resemblance to the liturgical headdress worn by bishops and given by the equation
Miter Surface
See also
Quartic SurfaceExplore with Wolfram|Alpha
References
Nordstrand, T. "Surfaces." http://jalape.no/math/surfaces.Cite this as:
Weisstein, Eric W. "Miter Surface." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MiterSurface.html