None, actually.

Tho I should thank Mr. S, calculus teacher in my last year of highschool, and most of my physics teachers, and that one lady in first year of highschool teaching maths. I think those were way more important in teaching me logic than the folks who pretended to teach me stuff later in uni.

Oh, and that dude, Sir O.D., who was my professor of embedded microcontrollers in uni. Didn't teach me much programming, rather taught a memorable lesson on VHDL and how hardware really works.