Prospect's World Top Thinker 2019, Caucher Birkar. Photo: Prospect composite

Top thinker Caucher Birkar talks maths, migration—and how his older brother taught him calculus

Tens of thousands voted to choose the world’s top thinker from the 50 names we presented in our last issue. Here we speak to the winner, Cambridge mathematician Caucher Birkar
September 3, 2019