Endraß surfaces are a pair of Octic Surfaces which have 168 Ordinary Double Points. This is the maximum number known to exist for an Octic Surface, although the rigorous upper bound is 174. The equations of the surfaces are

**References**

Endraß, S. ``Octics with 168 Nodes.'' http://www.mathematik.uni-mainz.de/AlgebraischeGeometrie/docs/Eendrassoctic.shtml.

Endraß, S. ``Flächen mit vielen Doppelpunkten.'' *DMV-Mitteilungen* **4**, 17-20, 4/1995.

Endraß, S. ``A Proctive Surface of Degree Eight with 168 Nodes.'' *J. Algebraic Geom.* **6**, 325-334, 1997.

© 1996-9

1999-05-25