orientability

Mathematicians solve the famous loop's mystery

In the first of a new series 'Imaging Maths', Plus takes an illustrated tour of an extraordinary geometric construction: the Klein bottle.

Maths in a minute

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

Going back to uni during a pandemic

What can maths tell us about how to make universities safe from COVID-19?
The maths of COVID-19

All our COVID-19 related coverage at a glance.
What is constructor theory?

A new way of looking at the physical world promises to shed light on some of the problems physics as we know it can't deal with.
Unlocking the workforce

How can we all get back to work safely in the face of a lingering pandemic?
Maths in three minutes: Map projections

Getting a different picture of our planet.