As of lecture #2, worst series in OCW I've found. Quality has skydropped since 18.01, what is it with European lecturers? Feeling the right way of teaching lies in proving complicate statements while defining nonintuitive math objects at uneasy peace rather than providing insightful examples, even tho this is just necessary ground knowledge and not the course core; and at the end of the day you can't even figure out how to solve problems from recitations. God I want Jerison back.####[]