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More from Chalkdust
Page 3 model: To betray or not to betray?
That is the question
Covering infinity
Sophie Bleau uncovers the secrets behind covering maps
Cryptic crossnumber (including hints)
Looking for a challenge? Try our cryptic crossnumber—with hints and tips so anyone can have a go!
On the cover: Islamic geometry
Explaining the mathematics of tiling, and the cover of Issue 10
Is it better to run or walk in the rain?
When you're caught in the rain without an umbrella... what is your best option?
John Forbes Nash: the legacy
Exploring the legacy of John Nash (1928 – 2015)