https://en.wikipedia.org/wiki/Aleph_number https://en.wikipedia.org/wiki/Aleph_number EDIT: The computer science program was 2 courses from a mathematics major

https://en.wikipedia.org/wiki/Aleph_number https://en.wikipedia.org/wiki/Aleph_number EDIT: The computer science program was 2 courses from a mathematics major. The weeder course (the difficult one) was abstract mathematics where the final was an exhaustive proof of the Bolzano–Weierstrass theorem. https://en.wikipedia.org/wiki/Bolzano%E2%80%93Weierstrass_theorem https://en.wikipedia.org/wiki/Bolzano%E2%80%93Weierstrass_th...