Welcome to Plus magazine!

Seeing Pythagoras

The great thing about geometry is that you can sometimes prove things using pictures. Enjoy these three great visual proofs of Pythagoras' theorem!

Kurt Gödel: A postard from Vienna

Wim Hordijk recently sent us a digital postcard from Vienna, where he had traced the steps of the eminent mathematician Kurt Gödel. Here is what he discovered.

Celebrating black mathematicians

Last month the home of Plus joined Black History Month celebrations with an event showcasing the contributions of black mathematicians.

Spencer Becker-Kahn: Minimal surfaces

In this video Spencer Becker-Kahn explains what minimal surfaces are and why he likes them.

Maths behind the rainbow

Keats complained that a mathematical explanation of rainbows robs them of their magic, conquering "all mysteries by rule and line". But rainbow geometry is just as elegant as the rainbows themselves.

The PEMDAS Paradox

What answer do you get when
you calculate 6÷ 2(1+2)?

Maths in a minute: Escape velocity

Would you like to get away from Earth? Here's how fast you would need to go.

A cute problem goes big

Mathematicians have revived an old approach to solving the famous Riemann hypothesis.