TIL prefix notation (aka Polish notation) was invented in 1924 by Jan Łukasiewic, who apparently just dropped it in an article not about the notation at all. Which is a pretty ballsy thing. (Actual quote: “I came upon the idea of a parenthesis-free notation in 1924. I used that notation for the first time in my article Łukasiewic(1)”) That also seems par for the course for mathematicians.