## Euler

This surprising result about 3D shapes tells us something deep about the nature of space.

Five favourite problems inspired by Leonhard Euler, one of the greatest mathematicians of all time.

**Surein Aziz**explores one of the most beautiful equations in mathematics

**Chris Sangwin**takes us through excerpts of Euler's algebra text book and finds that modern teaching could have something to learn from Euler's methods.

**Phil Wilson**continues our series on the life and work of Leonhard Euler, who would have turned 300 this year. This article looks at the calculus of variations and a mysterious law of nature that has caused some scientists to reach out for god.