Galvagni Figures for Polyenns
A polyenn is a figure made of regular enneagons joined
edge to edge.
A Galvagni figure is a figure that can be tiled by a polyform
in more than one way—a kind of self-compatibility figure.
Galvagni figures first appeared in Erich Friedman's
for November 2004.
Here are minimal known Galvagni figures for polyenns.
The black tiles have no Galvagni figures.
The gray tiles have no known Galvagni figures.
Back to Galvagni Compatibility
Col. George Sicherman