[{"observed_at":"2026-09-07 16:48:59.613596+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTM0NzUwMTE3","source_instructor_id":"rmp:2652881","instructor_name":"Chenxi Wu","course_label":"MATH561","course_id":"MATH 561","course_uid":"course_a133a953d2fc593f17f887bf","review_date":"2021-05-10 03:53:10 +0000 UTC","comment":"Can be a little confusing at times but I thought he was very helpful. Homework was relevant and useful. He probably gets a bad rep because he has an accent but his homeworks and exams were straight forward. Show up and study his lectures and the class should be easy","source_url":"https://www.ratemyprofessors.com/professor/2652881","quality_rating":4.0,"difficulty_rating":3.0},{"observed_at":"2026-09-07 16:16:19.143219+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTI0OTI0MTA4","source_instructor_id":"rmp:1079222","instructor_name":"Mustafa Kalafat","course_label":"MATH561","course_id":"MATH 561","course_uid":"course_a133a953d2fc593f17f887bf","review_date":"2015-05-31 20:45:20 +0000 UTC","comment":"I liked what he was trying to do.  He was thoughtful.  He chose a readable text, assigned interesting problems from it (many routine), and then complemented the material in lecture - the lectures added to the text, not simply reproduced it.  They added to it by connecting topics from calc 3 with differential geometry or proving different facts.","source_url":"https://www.ratemyprofessors.com/professor/1079222","quality_rating":5.0,"difficulty_rating":3.0},{"observed_at":"2026-09-07 16:08:55.082064+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTIzMzQ3Mjcy","source_instructor_id":"rmp:1618056","instructor_name":"Ruifang Song","course_label":"MATH561","course_id":"MATH 561","course_uid":"course_a133a953d2fc593f17f887bf","review_date":"2014-06-05 10:23:30 +0000 UTC","comment":"Great professor. Really clear and usually does a very good job preparing for lecture and presenting the material to the class. Although she has an accent it is no trouble at all to understand her. The only real problem is is that she doesn't really talk TO the class as much as other math professors. She mostly just relays information to the board.","source_url":"https://www.ratemyprofessors.com/professor/1618056","quality_rating":4.0,"difficulty_rating":1.0},{"observed_at":"2026-09-07 16:08:53.505078+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQxMjE0NTMy","source_instructor_id":"rmp:3065186","instructor_name":"Ruobing Zhang","course_label":"Math561","course_id":"MATH 561","course_uid":"course_a133a953d2fc593f17f887bf","review_date":"2025-05-08 20:37:30 +0000 UTC","comment":"The course did not cover the materials stated in his first class. As he claimed, he is teaching some modern Riemannian Geometry. Often, it is hard to get some of the formulae he used, maybe he thought those things were 'obvious'. The final is extremely difficult and extremely tough graded. I should have drop this course after midterm.","source_url":"https://www.ratemyprofessors.com/professor/3065186","quality_rating":2.0,"difficulty_rating":4.0},{"observed_at":"2026-09-07 16:08:53.505078+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQwOTk4MjMx","source_instructor_id":"rmp:3065186","instructor_name":"Ruobing Zhang","course_label":"Math561","course_id":"MATH 561","course_uid":"course_a133a953d2fc593f17f887bf","review_date":"2025-04-22 01:50:53 +0000 UTC","comment":"I really enjoy his lecture and he is definitely an outstanding mathematician. However, it seems to be as difficult as a graduate-level course due to my average math ability. I strongly recommend this course to students who aim to pursue a graduate degree in pure math. Others, like me, may respect it, but chose to drop it.","source_url":"https://www.ratemyprofessors.com/professor/3065186","quality_rating":5.0,"difficulty_rating":5.0}]