More from Chalkdust
Easy to state, hard to prove: The Collatz conjecture
90 years later, we're still unable to prove this surprisingly simple statement
Chalkdust issue 16 – Coming 9 November
Hear ye! Hear ye! Chalkdust Magazine issue 16 is launching, full of mathematical joy and curiosity.
Christmas competition #2: ‘More geometry snacks’
Win this year's best book of geometry puzzles
Taking the (mathematically) perfect picture at the Leaning Tower Of Pisa
Finding the best picture at the Leaning Tower of Pisa is all about the maths rather than the pose!
Puzzles, Issue 04
Solve the puzzles that appeared in Issue 04.
Can we do good more effectively?
Choosing which charity we donate money to shouldn't be an entirely emotional decision.