More from Chalkdust
What’s odd about Pascal’s triangle?
Graeme Foster asks if there are more odd or even numbers in the triangle
A day in the life: statisticians
We talk to four statisticians working in different jobs across industry and academia
On the cover: Apollonian packing
David Sheard explores the rich mathematics and history behind the Apollonian packing, and the cover of issue 11
Primes à la Euler
Infinitely many primes ending in 1, 3, 7 and 9 proved in typically Eulerian style.
Page 3 model: Frictional unemployment
Modelling unemployment using simple differential equations!
A Fields Medal at UCL: Klaus Roth
Klaus Roth and his work