Re:So you want to study mathematics
by dwohnitmok on Monday March 07, 2022 @05:39PM
(#30594307)
I wonder if the pamphlet's changed or I'm misremembering. I distinctly remember Math 123 and Math 114 both explicitly excluding Math 55 (It's also worth stating that Math 122 and Math 113 are definitely not freshman courses). But regardless I'd be very surprised to learn a Math 55 student took Math 114 or Math 123. I would also be surprised (although less so) to learn of a Math 55 student in the 130 series.
The Math 140 series have only become more serious courses in the last 10 - 15 years or so IIRC. The 240 series was generally where to go for serious mathematical logic courses (and generally is where you would go after e.g. a first 140 series course in set theory anyways).
Not at all, you are only prohibited from taking "freshman courses"[1]—that's what 55 is supposed to cover (definitely not all of the undergrad math curriculum), though some professors go beyond that. Many students go on to take at least some undergrad courses, with those in the 140's range being mathematical logic gems with no real counterpart in the graduate department.
[1]Students from Math 55 will have covered in 55 the material of Math 122 and Math 113. If you have taken 55, you should look first at Math 114, Math 123 and the Math 131-132 sequence. https://legacy-www.math.harvard.edu/pamphlets/courses.html