When I was at university he gave a seminar for professors and postgraduates entitled "Proving theorems with physics" where he used principles like the conservat

When I was at university he gave a seminar for professors and postgraduates entitled "Proving theorems with physics" where he used principles like the conservation of momentum or absence of bulk charge to prove a range of otherwise difficult theorems. It was a really fun and interesting talk, the guy is extremely smart and charismatic.