More from Chalkdust
Prize crossnumber, Issue 19
Can you solve it?
Making a Möbius strip
Sophie Bleau chops up, unravels, and squeezes the torus into shape
A Compendium of Mathematical Methods
We review the second of this year's nominees for the Book of the Year
Ten things you didn’t notice in Issue 06
You won't believe number 5!
Can we do good more effectively?
Choosing which charity we donate money to shouldn't be an entirely emotional decision.
Reinventing 2D: What a difference a matrix makes
How derivatives of matrices are being used in your day-to-day lives