User account

Primary tabs

Maths in a minute

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

The maths of randomness

Randomness is surprisingly hard to define. Fortunately the mathematical language we use to describe it is beautifully well defined.
Arithmetic billiards

Need to find the least common multiple or greatest common divisor of two numbers? A billiard table of the right proportions holds the answers!
Error correcting codes

Learn about magical mathematical methods for fixing errors on the fly.
The two envelopes problem solved

Here's a resolution for one of probability theory's most famous paradoxes.
Maths in a minute: The axioms of probability theory

Take a quick trip to the foundations of probability theory.