More from Chalkdust
Prize crossnumber, Issue 20
Can you solve it?
Dear Dirichlet, Issue 17
Canines, Cliff Richard and conditioning find their way into the prof's postbox this issue.
Making a Möbius strip
Sophie Bleau chops up, unravels, and squeezes the torus into shape
In conversation with Dominique Sleet
Ellen Jolley learns how to run a maths outreach programme
Kepler’s barrels
Sam Hartburn orders wine by the barrel, but wonders if she's getting the most wine
Why I hate an empty bus stop
How the queue size tells you when the next bus is coming