d4 - Chalkdust

Tom is a PhD student in the UCL Physics Department, simulating atomic collisions. He likes to think that what he does ‘technically counts as maths.’

Dear Dirichlet, Issue 10
Letter writing, hospital visits, and getting the family active are among the topics of discussion in this issue's Dear Dirichlet advice column
On the cover: Hydrogen orbitals
Find out more about the weird shapes on the cover of Issue 08
Integration: It’s more than the sum of its parts
Defining what exactly an integral is leads naturally to an explanation of how to handle approximating them.
Machine learning 101
Start your quest to conquer the planet with this introduction to the wonderful world of machine learning
The n days of Christmas
Get into the ChristMATHS spirit with the maths behind the popular Christmas carol!
What makes a good puzzle?
If you enjoyed Hannah's sweets then you'll love these...