Unlike other students who leave comments, I find this class with Professor Iseli easy. Weekly homework is the major component of the workload, but I only spent ~2-3 hours on average each week on homework. The two quizzes require a decent amount of time to review. I spent like two hours on reviewing the notes for each of quizzes. Since the final was 24 hours open book, I didn’t even review before the exam. This course is chill in online format. Professor Iseli is clear, caring, and supportive, although it could be a bit hard to recognize her handwriting occasionally. I would recommend anyone interested in 170B to take it with her. You should be familiar with analysis before taking this class, otherwise you can lose points anywhere because you made minute mistakes in real analysis. This course requires more rigor than usual undergrad classes.

No exaggeration, this is definitely the hardest Math class I've taken at UCLA - much moreso than 115A, 131A, 164, etc. After the math department reworked Math 170A/B, I was definitely taken aback!

That being said, Iseli is a great professor. She's super engaging and cares a lot about student learning. She is really helpful with office hours, runs extra workshops for students, and really responds to student feedback. In general, I think she's an amazing professor and would strongly recommend her as a math prof!

But, the workload and tests were really rough. Iseli does try her best to prepare you for the class, but if you don't have as strong of a math background - in competitive math, etc. - I think this class will definitely be tough.

Holy smokes. The professor does try her best to help and is a pretty good lecturer. However, be warned that the homework takes 10-12+ hours for 6-8 problems total and the exams are brutal (final took me morning to evening). I took 110AH, 115AH, and 131AH, but this honestly was harder than them all because of how abstract or meticulous the problems I got. The class definitely makes your other upper-div math classes feel like a breeze afterwards though...good luck!

The class is really tough. I think it underwent a syllabus change not too long ago which made it a lot more theoretical compared to the 170E/S series. That having been said, the class is super interesting and the professor teaches the class well. I think the lecture material was sometimes a little too dense and fast-paced, but that could be a result of the syllabus and not really the professor. In terms of work load, it's certainly not an easy class. There's weekly homeworks which took at least 5~6 hours, which is not too bad except that the questions are all really difficult and many degrees more complicated than anything covered in lecture. This was the first class I pretty much had to attend every office hour to ask homework questions, and even then I needed to consult something like stackexchange for help because some of the questions were insane. Also the two midterms took about 5+ hours each, and the final took about 8 hours.

She assigns weekly homework and multiple quizzes and midterms, however she was very accommodating and very organized. The course material was difficult for me, but was also very interesting. Overall a very enjoyable class.

I took both 170A and 170B with Iseli, and I can 100% say that she's the best math professor I've ever had at UCLA. She gives clear, engaging lectures, takes good notes, and makes sure to answer questions in class and in office hours. Her homeworks, quizzes, and tests can be quite tough, but there are never any curveballs; she's always very clear on what she tests you on. But beyond that, she clearly goes the extra mile to make sure students get the most out of the class: she constantly asks for feedback and improves on the class, does extra workshops on how to use LaTeX, and overall clearly cares about making sure that we enjoy the class! She's super approachable in office hours as well, I'd definitely recommend going to them if you can! Overall, I would definitely take another class with Iseli in the future.

(also, shoutout our TA Daniel, he was pretty great too)

As for the logistics of this class during COVID: all lectures were recorded with notes. She gives out weekly homeworks that take a nontrivial amount of time; there were 2 timed quizzes, a midterm, and a final. Definitely a challenging math class, and I'd advise against taking this if you're just interested in the applications of probability (170E/S is probably a better fit). That being said, if you do take 170B, you can't go wrong with Iseli.

This was my second consecutive quarter with professor Iseli (I took 170A with her the previous quarter)

The other reviews do a pretty good job of explaining the logistical side, so I'll just say that I feel like the professor really cares a lot about the experience and learning of her students.

For example, I didn't have the greatest experience in her class last quarter. I often felt the workload was too heavy, and explanations were sometimes a little unclear. However, she is still a relatively new professor, and I felt that she took a lot of the feedback students gave last quarter, and made this quarter feel a lot more enjoyable. I had a really good time in her class this quarter.

I've never been interested in probability much before taking the 170A/B series with professor Iseli, but it has become one of the topics I enjoy most in mathematics. The course is difficult for sure (I also think 170A was just a lot more dense and difficult compared to 170B), but if you need to take it, I do highly recommend you take it with professor Iseli given the chance!

Professor Iseli has been my favorite maths professor at UCLA. She's incredibly thorough, helpful, and nice!

I took 170e with Professor Iseli, but I will write the review here since the 170e class does not have a class page. Lecture slides were always clear and concise (ie outlining goals of the lecture plus a small recap to previous topics) and my class was always active with questions. Quizzes were fair and quick, and homework was well paced. She dropped the two lowest quiz scores and the lowest homework, so you will have a grace period. Professor Iseli was very supportive and personable and I would love to take more classes with her in the future.