The Ammann chair tiling from AD 1977. Mathematica code by Sasho Kalajdzievski, (CC BY-NC-SA)
More from Chalkdust
Skimming potatoes
Ryan Palmer shares his chips – sorry – tips for finding the perfect skimming stone
Do the shuffle: finding π in your playlists
Henry Jaspars really likes Nick and Norah’s infinite playlist.
Formal sums
Nik Alexandrakis explains what they are and what they can tell us
Page 3 model: Cows
How big is the biggest cow?
Mini crossnumber
All the fun of our prize crossnumber, just smaller and without a prize
What’s hot and what’s not, Issue 01
Be the envy of your friends with our guide to what's hot in maths right now