## Articles

**mathematics of perspective**, researchers are now able to produce three-dimensional reconstructions of the scenes depicted in these works.

- Information overload - how mathematicians are helping us all to make sense of the vast amount of information now available to us
- Sum problems - can you be good at mathematics without being good at arithmetic?
- Readers' corner - Meet Mandy, the cuddly Mandelbrot set!

*Plus*find out how this is changing, thanks to

**Dasher**, a new open-source text-entry system based on

**arithmetic coding**.

**data compression**.

**Isaac Newton**and David Gregory - took place on the campus of Cambridge University. The discussion concerned the

**kissing problem**, but it was to be another 260 years before the problem was finally solved.

*More or Less*, BBC Radio 4's series devoted to all things numerical, starts on November 12th. Presenter

**Andrew Dilnot**tells

*Plus*about the motivation behind the programme.

**Golden Ratio**, and ever since people have been fascinated by its extraordinary properties. Find out if beauty is in the eye of the beholder, and how the Golden Ratio crosses from mathematics to the arts.