Great movie - the only problem I have is this.
I see his obsession, and I see his angst. What I don't see is his genius. We don't see him do any actual work. If the character was an old man, like Sol, and we are told he's spent his life pursuing this, then we'd perceive the effort that goes into research and mathmatical rigour. But with a young man who never seems to actually do any math I'm just not perceiving the genius we're assured that he is. The reason someone becomes a great genius, particularly in an abstract pursuit like mathmatics, is because he has the drive and single-mindedness to put in staggering amounts of work. It just isn't shown here.
"I'll book you. I'll book you on something. I'll find something in the book to book you on."