Applied or theoretical math, and what specialty?
Oh, theoretical. I've worked out some things which I think might be useful, but the field in which I am known is in my judgment about as useful as a soap herring.
I have figured out some math which is kind of in between.
No particular specialty any more, 'cos I'm a genius. In the course of my research I invented linear optimization and proved that my solution solved it. That would have been
way more impressive if I'd been the first person to do that rather than just doing it as a fucking hobby.
I wished at the time that I could do something else. My little brother is using his computer science skills to cure cancer, the smug little bastard. (I love him.)