Chair Surface

Chair

The chair surface is a surface with tetrahedral symmetry which looks like an inflatable chair from the 1970s. It is given by the implicit equation

(x^2+y^2+z^2-ak^2)^2-b[(z-k)^2-2x^2][(z+k)^2-2y^2]=0.

The surface illustrated above has k=5, a=0.95, and b=0.8.

See also

Bride's Chair, Cushion Surface

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References

Nordstrand, T. "Chair." http://jalape.no/math/chairtxt.htm.

Referenced on Wolfram|Alpha

Cite this as:

Weisstein, Eric W. "Chair Surface." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/ChairSurface.html

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