i have no clue. i meant it as a distinction with a class specifically about proofs, which is one i was going to have to take if i stuck to a straight math degree, but not now.

i think it probably depends on how the classes are taught. one of my instructors, granted this was back in the 70s or something, said that her calculus courses were almost entirely about proofs. whereas the stuff we're learning only involves proofs almost as an afterthought.