This is a link to the MAM 2003 Home page
This is a link to a copy of the MAM 2003 Poster page, and this is a copy of my MAM 2003 essay: Hyperbolic Art and the Poster Pattern
This is a link to a big gif version of the theme image for the MAM 2003 home page, shown below.
This fish design can be interpreted as a repeating pattern in the Poincaré circle model of hyperbolic geometry. It is based on the regular tessellation {10,3} and fish like those in M. C. Escher's print Circle Limit III. For more about this design, see the essay Hyperbolic Art and the Poster Pattern, by Douglas Dunham.