# Past lectures

How did numbers arise? How were they written down? What does it mean to say that numbers are rational, complex, or transcendental? What...

From the writers of Mesopotamian tablets, via treachery in 16th-century Italy, to a famous duel fought in Paris, the history of algebra...

From the Egyptian pyramids to modern sculpture, geometry has been at the heart of our culture. Central to this story has been '...

This is the 2007 joint London Mathematical Society / Gresham College lecture.

The other lectures held in collaboration with the...

Leönhard Euler (born 15 April 1707), the 'Mozart of mathematics', was probably the...

What do we mean by exponential growth? How quickly does your bank balance grow? How quickly does a cup of tea cool, or radium decay?...

What is meant by the square root of minus 1? why is it 'imaginary'? what are complex numbers, and why are they useful? how can we...

The 'circle number' pi has fascinated people for thousands of years. Who first called it pi? who had it engraved on their tombstone? Who...

What is the Mandelbrot set? how can prime numbers protect your bank balance? and why is mathematics incomplete? More new mathematics...

The World Wide Web has evolved into a universe of information at our finger tips. But this was not an idea born with the Internet. This...

What is a number? can you solve a quintic equation? is Euclid true? and is the calculus correct? The 19th century witnessed major...

What shape is the Earth? how do strings vibrate? can you construct a 65,537-sided polygon? and can you cross the seven bridges of...