PPT Slide
In this course, we want to take a broader perspective on the
concept of a pattern, by allowing the basic units of a pattern
to be similar but not necessarily identical, and to repeat but
not necessarily with regularity or symmetry. One step in that
direction is the geometric notion of the quasi-tiling of the
A quasi-tiling is one in which a finite number (greater than one)
of not necessarily regular polygons can be used to tile the plane,
but without having any periodic structure. For this reason, such
tilings are sometimes also called aperiodic tilings.
provides some excellent examples of and tools for exploring