Xiang Tang

I love professor tang! Sweet and fun class

5/7/2026

He is the best prof in the department!!!!

4/26/2026

2 or less hrs/week

Tang is a treat! Although I think you don’t learn as much as you could

12/10/2025

Dr. Tang constantly encouraged us to discuss the material with each other, which is somewhat uncommon in math. His classroom always felt welcoming and safe. The homework assignments were shockingly easy and the exams were also not very challenging, but I don't think that's inappropriate for a first class in abstract algebra.

6/22/2025

Professor Tang is a very personable guy who is clearly knowledgable about the subject area. The class feels like a community, and he encourages this. The content material for the midterm was unclear to some, but that wasn't a huge deal. Would recommend.

12/15/2024

Professor Tang is the goat

12/11/2024

One of the best professors in the math department. Tang is a brilliant mathematician and truly cares about his students. Made me love algebraic topology.

12/5/2024

Great Professor

10/31/2024

2-4 hrs/week

i was always confused in class but ended with a good grade because he grades easily

5/18/2024

2 or less hrs/week

a little harder than honors math 1 but I ended up doing well

5/18/2024

Very kind guy and one of my favorite professors at WashU. Also very helpful and supportive towards his students.

1/11/2023

Honors Math is graded very lightly but the material is so confusing. The professor is nice, but only lectures, most of which are very similar. He doesn't wait to see if people are understanding, he just keeps plowing through proofs. To top it off, the homework, quizzes, and tests are graded so lightly that you don't know what you don't know.

1/7/2023

Professor Tang is a very clear and patient lecturer. He is helpful outside the classroom and truly cares about his students.

2/4/2022

Prof Tang is a generous grader and an eminent, talented mathematician

12/9/2018

Professor Tang is a super talented teacher. He's amazing at what he taught and able to answer almost all of your questions. If you want to dig deeper into mathematics, he is definitely a great person to visit.

4/19/2018

Truly cared about us. Lectures were sometimes tricky to follow, but was always willing to explain and was enjoyable to listen to.

11/2/2017

Great teacher.

4/3/2013

Professor Tang is clearly concerned for his students and shows up to class enthusiastic about teaching. Some people thought he had high expectations but he did outline them clearly. Highly recommended for students interested in math (or physics) and not taking the class based on requirements alone.

7/17/2012

Tang was a decent teacher. As far as foreign profs go, he was pretty easy to understand, and he emphasized the important concepts pretty well. He made his expectations for the exams clear, and gave helpful practice tests.

5/13/2012

One thing he said in the first lecture was really true: "the textbook is very important." Indeed it is, cuz that's how you are going to learn in his class, by reading the book yourself.

4/16/2009

He was a great professor that made me love math. His examples were great and very clear; you would never think that differential equations is difficult once you learn from him. His homework assignments were basically the exams so if you can do them, you should get an A in the class. Plus, he has a generous curve (most people get A's).

4/21/2008

Although Prof. Tang is hard to understand, I think he did his best. The good thing about him is that he repeated many times the important things he wants you to know, the things that he said that will appear on the test. I would say going to his class is important because it is useful to take notes because some of the problems on the tests are from

12/24/2006

inarticulate, unhelpful, but entertaining. Probably the only people who got anything out of this class were mathy people before they took it

11/28/2006

attributes justifications and conclusions to being "magical" or "beautiful". difficult to understand, but even more difficult to follow once you are able to understand. going to class was merely time away from reading your textbook where you would ultimately learn all of the material. however, listening to him attempt to teach was very entertaining

10/31/2006