Bridges 2011 Short Paper

A Portrait of a Quadrilateral Group
Jay Zimmerman
(Proceedings pages 505–508)


This paper looks at representing a group G of order 16 as a group of transformations of a compact surface of genus three. This is the surface of smallest genus upon which G can be so represented. The action is realized as a quotient of a full quadrilateral group and so all regions have four edges. This group is also NOT the group of automorphisms of a regular map. There are significant differences between this portrait and previous ones.