March 26 – 085

ContextFree. Penrose tiling #1

Penrose tilings are named after mathematician Roger Penrose. In its simplest form, it is a set of 36- and 72-degree rhombi, with “matching rules” forcing the rhombi to line up against each other only in certain patterns. This type of tiling has a five-fold symmetry that has been used to explain the structure of certain “quasicrystal” substances. ( David Eppstein, UC Irvine)