Want facts and want them fast? Our *Maths in a minute* series explores key mathematical concepts in just a few words. From symmetry to Euclid's axioms, and from binary numbers to the prosecutor's fallacy, learn some maths without too much effort.

Maths in a minute: Stochastic gradient descent

How does artificial intelligence manage to produce reliable outputs? Stochastic gradient descent has the answer!

Maths in a minute: The SIR model

Find out the basics of the SIR model, the basis most disease modellers use to understand the spread of a disease through a population.

Maths in half a minute: Exponential growth

What do we mean when we say that something grows exponentially? Find out in this very easy introduction, suitable for anyone curious to know more!

Maths in a minute: Odds ratios

Is your new face cream associated to getting spots? The odds ratio can help figure it out.

Maths in a minute: Mathematical models

A basic introduction to the most powerful tools in science and engineering.

Maths in a minute: Algorithms

The word "algorithm" has probably got more usage over the last few years than it has in its entire history. But what exactly is an algorithm?

Maths in a minute: Exponential growth

What do we mean when we say that something grows exponentially?

Maths in a minute: Conditional probability

Find out why the formula we use to work out conditional probabilities is true!

Maths in a minute: Non-linearity

Non-linear relationships are tricky relationships. Find out why here.

Maths in a minute: Homotopy

The concept of homotopy is a great example of how the language of maths can make intuition precise.