More from Chalkdust
- 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
- How can we identify objects in photos, to diagnose cancer or predict the weather? Using gradients!
- Are you a winner?