Robbert Dijkgraaf
Robertus Henricus \"Robbert\" Dijkgraaf (born January 24, 1960) is a Dutch mathematical physicist and string theorist.
Dijkgraaf\'s research focuses on string theory and the interface of mathematics and physics in general. He is most well known for his work on topological string theory and matrix models, and has given name to the Dijkgraaf-Witten invariants and the Witten-Dijkgraaf-Verlinde-Verlinde formula.
