An Algebraic Surface which can be represented implicitly by a polynomial of degree six in , , and . Examples are the Barth Sextic and Boy Surface.

**References**

Catanese, F. and Ceresa, G. ``Constructing Sextic Surfaces with a Given Number of Nodes.'' *J. Pure Appl. Algebra* **23**,
1-12, 1982.

Hunt, B. ``Algebraic Surfaces.'' http://www.mathematik.uni-kl.de/~wwwagag/Galerie.html.

© 1996-9

1999-05-26