The Ammann chair tiling from AD 1977. Mathematica code by Sasho Kalajdzievski, (CC BY-NC-SA)
More from Chalkdust
How do calculators do trigonometry?
W.L. Feldhusen explains the obscure sine-finding trick hiding inside your calculator!
Topological tic-tac-toe
Alex Bolton plays noughts and crosses on unusual surfaces
Superegg
How optimising the space around a circular monument is related to supereggs
The n days of Christmas
Get into the ChristMATHS spirit with the maths behind the popular Christmas carol!
A brief history of gravitational waves
The discovery of gravitational waves offers a new way of looking at the universe. Who knows what we will discover?
Dear Dirichlet Valentine’s Day special
Agony uncle Professor Dirichlet answers your personal problems this Valentine's Day.