## number theory

Eron Lindenstrauss got the Fields Medal for developing tools in the area of dynamical systems and using them to crack hard problems in the seemingly unrelated area of number theory.

Results in mathematics come in several flavours — theorems are the big important results, conjectures will be important results one day when they are proved, and lemmas are small results that are just stepping stones on the way to the big stuff. Right? Then why has the Fields medal just been awarded to Ngô Bào Châu for his proof of a lemma?

James Maynard, one of the prize winners at the European Congress of Mathematics, is counting primes that don't have 7s in them. But why?

One of the greatest honours in maths has been awarded for the proof of Fermat's last theorem.

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

In this excellent talk the mathematician Vicky Neale gives a fascinating and easy-to-follow introduction to the prime numbers.

Marcus du Sautoy talks about football, cryptography, and numbers.

There's been progress on one of the biggest open problems in maths: the twin prime conjecture.

Here's an easy game that leads you straight to an unsolved question in maths.