Dini's Surface
A surface of constant Negative Curvature obtained by twisting a Pseudosphere and given by the parametric equations
 |  |  | (1) |
 | |  | (2) |
 | |  | (3) |
The above figure corresponds to
, 
, 
, and 
.See also Pseudosphere
References
Geometry Center. ``Dini's Surface.'' http://www.geom.umn.edu/zoo/diffgeom/surfspace/dini/. Gray, A. Modern Differential Geometry of Curves and Surfaces. Boca Raton, FL: CRC Press, pp. 494-495, 1993. Nordstrand, T. ``Dini's Surface.'' http://www.uib.no/people/nfytn/dintxt.htm.
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