More from Chalkdust
- The Chalkdust editors share some of their favourites
- Sophie Maclean and David Sheard speak to a very top(olog)ical mathematician!
- David Sheard sets the third puzzle. Can you solve it?
- David Sheard explores the rich mathematics and history behind the Apollonian packing, and the cover of issue 11
- Robert J Low flips one upside down.