Blog

Stacks and combinatorics
21 September 2025 #Maths
Root systems and Weyl groups, from Lie theory to stack theory.
Vertex algebras done right
1 December 2024 #Maths
An easier way to think about vertex algebras.
Can a doughnut eat a doughnut?
26 September 2020 #MathsLite
Two fun problems about doughnuts.