More from Chalkdust
- 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
- We review the fourth of this year's nominees for the Book of the Year
- We explore the concept of emptiness in set theory, and explain how zero went from "nothing" to "something"
- Chalkdust visits popular maths' biggest conference