group theory
With the credit crunch dominating the news, columnists have been wailing about "chaos in the markets", and "turbulent" share prices. But what does move the markets? Are they deterministic, or a result of chance? Colva RoneyDougal explores the maths, from chaos to group theory.


Computer scientists prove how long it should take you to solve Rubik's cube


Winner of the general public category. Enormous is the right word: this theorem's proof spans over 10,000 pages in 500 journal articles and noone today understands all its details. So what does the theorem say? Richard Elwes has a short and sweet introduction.


Groups are some of the most fundamental objects in maths. Take a system of interacting objects and strip it to the bone to see what makes it tick, and very often you're faced with a group. Colva RoneyDougal takes us into their abstract world and puzzles over a game of Solitaire.

Tope Omitola looks back at the tragically short but inspiringly productive life of a true original: Evariste Galois.
