Astroidal Ellipsoid
The surface which is the inverse of the Ellipsoid in the sense that it ``goes in'' where the Ellipsoid ``goesout.'' It is given by the parametric equations
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for
and 
. The special case 
corresponds to the Hyperbolic Octahedron.See also Ellipsoid, Hyperbolic Octahedron
References
Nordstrand, T. ``Astroidal Ellipsoid.'' http://www.uib.no/people/nfytn/asttxt.htm.
- Defined
- Definite Integral
- Degenerate
- Degree
- Degree (Algebraic Surface)
- Degree (Map)
- Degree of Freedom
- Degree (Polynomial)
- Degree Sequence
- Degree (Vertex)
- Dehn Invariant
- Dehn's Lemma
- Dehn Surgery
- de Jonquières Theorem
- de Jonquières Transformation
- Del
- de la Loubere's Method
- Delannoy Number
- Delaunay Triangulation
- Delian Constant
- Delian Problem
- de Longchamps Point
- Del Pezzo Surface
- Delta Amplitude
- Delta Curve