Fermat's Last Theorem

A fascinating discovery sheds new light on the work of the Indian mathematician Srinivasa Ramanujan.

Fermat's little theorem and fake primes.

Asking good questions is an important part of doing maths. But what makes a good question?

An "electric atomosphere" is not what you expect at a maths lecture. But it is what prevailed when Andrew Wiles announced his proof of a 350-year-old-old problem, Fermat's last theorem, exactly 20 years ago.
  • Happy birthday Plus! — celebrating 10 years of bringing mathematics to life
  • Plus 10 — what were the greatest mathematical advances in the last decade?
A mathematician finds another proof for Fermat's last theorem
Robert Hunt concludes our Origins of Proof series by asking what a proof really is, and how we know that we've actually found one. One for the philosophers to ponder...