# Articles

Mathematical models can help the nation return to (some sort of) normality.

We explore why you need to be extremely careful when combining the reproduction ratios of a disease in different settings, such as hospitals and the community.

Change is the only constant in our lives — which is why differential equations are so useful.

As football leagues around the world have been suspended due to COVID-19, how should the final rankings of teams be decided? Here is a suggestion.

The origin story of this famous sequences stars some cute, fluffy bunnies.

Is it about energy? Is it about disorder? Or is it about information? It's all three!

*R*

_{0}?

We look at a crafty mathematical device which, among other things, has helped people understand what causes cholera.

How do mathematical models of COVID-19 work and should we believe them? We talk to an epidemiologist, who has been working flat out to inform the government, to find out more.

How should people arrange themselves for maximal socialising at a safe distance?

This puzzle is famous because the accepted answer is counter-intuitive. But is it always correct?

It's one of mathematics' most famous results: every "map" can be coloured using at most four colours. What it doesn't usually apply to, however, are real maps.