Carmen is doing a PhD in applied mathematics at UCL with a focus on mathematical modelling of complex systems in urban environments. She enjoys maths outreach, eating cheese naan, and has been working for Chalkdust since 2017.
More from Chalkdust

Artificial music
Carmen Cabrera Arnau explores the use of AI in composition
Review: Power in numbers — the rebel women of mathematics
Celebrate International Women's day by reading about rebel women in mathematics!
Why knot?
You can un-knot a knot, by cutting it not?
Chalkdust’s Christmas conundrums
As the festive season strikes again, we'll be dishing out more fiendish puzzles – this time with prizes!
Cat among the pigeons
Some interesting observations with the pigeonhole principle
Flexagon Templates
Print out and make a flexagon
