106 is a good class. Good overview of a lot of parts of math and good class to get used to writing some kind of proofs. Also the exams weren’t too hard (I was online though so it may be different since he curved easier for us)

131a is by definition going to be an insanely hard class. for everyone. so please keep that in mind. my whole class struggled together, and arant helped A LOT.
i think he's a great choice for 131a. Arant was unbelievably understanding. I always talked to him in office hours about my test anxiety and overall concerns and he was super down to earth and understanding, especially since this was our first in person quarter for a year and a half due to covid. grading is 20% homework, 20% midterm 1 20% midterm 2 40% final OR you can drop a midterm and have it be 30% with the final being 50%. most people dropped the second midterm since it was a complete shit show. I got F's on every exam and ended with a B-, so you really just have to hold your breathe and try your best until the end. He makes the material easier to understand, my advice would be to READ THE TEXTBOOK. every damn page. also buy the homework answers online (textbook solutions) through quizlet, it will save your life since the homework is really hard otherwise. He posts the recordings and his notes asap so you'll always have resources, and posts helpful 'what to know before the exam' sheets which I also really liked. i think he curved the class 20% since i had a 60% raw and ended with a B-. so that was really nice. i did email him after the second midterm basically in tears and he was super responsive and helpful. love this guy. TLDR: take him. it's going to be hard but he will help you!

Math 132 with Arant was a decent experience. Arant is chill and easy to talk to. His lectures are pretty clear and I appreciate him live streaming and recording lecture. I do agree his lectures are pretty similar to the textbook but I'm okay with that. Exams are okay, with averages in the 80s but keep in mind that exams were online this quarter. He also posts exam review questions which are pretty helpful, so make sure you study them. However he does not post homework solutions which is a con. His grading scheme is
Scheme 1:
20% Homework (Lowest 1 dropped)
20% Midterm 1
20% Midterm 2
40% Final

Scheme 2:
20% Homework (Lowest 1 dropped)
30% Better midterm
50% Final

I think the cons of this class is homework can be very time consuming. All of his homework are problems from Gamelin's book. Each homework is usually 10-11 problems, however each problem can have multiple parts so you should start early. To be honest, I think the first two weeks of the quarter had the hardest material, which is chapter 1 in Gamelin. But maybe that's just me. It gets better after you learn about Cauchy Riemann and line integrals.

Does not provide solutions to HW after they were turned in and his TAs graded them after quizzes/exams had passed, so i was unsure if I was doing it correctly. I will say that the HW is similar to quizzes which sounds good but like i said, I was always unsure if what I was doing was correct on the HW since there was no solution manual and therefore I often applied incorrect methods on the quizzes which could've been avoided with a solution manual. He also grades on correctness to add to it. He can be the best professor in the world but this part of his teaching method kills it for me. Other than that, he seems like a nice dude and has organized lectures and all but the material is harder than it should be had he just provided solutions for HW like every other professor ever. would not take again even if he is the highest rated at UCLA for math for this sole reason.

Not bad at all. The tests are easy. The homework is frustrating because you want to prove everything by appealing to common sense, but eventually the process of proofs for seemingly trivial ideas becomes fun. You gain a deeper understanding of the topics covered: fields, series, sequences, and functions, and derivatives (in one-dimensional calculus).

Hard content, need to watch the lecture really carefully and take note actively. The exams are VERY difficult and tight.

Class moves too fast in general. Lectures are good and informative but complexity is too low in comparison to homework and exams. Homework and exams take much longer than anticipated; exams are not possible to finish fully in allotted time. Does not release solutions to homework after due date which does not make sense / I do not see the point of such action and takes away from our learning and progress. Overall do not recommend if you are trying to have a good / semi-not-stressful time taking this class because it was a stressor.

I've had Professor Arant for both 170E and 131B. The structure felt the exact same for both of them. Professor Arant is a good lecturer, but I felt as if his notes would not really help during the homework since the questions on each homework are way harder than the ones in the textbook. It seems like the only way to do good on his homework and get answers is his office hours. He did not provide answers after the homework was due, which was very frustrating since you can't find them online either, so office hours is definitely a necessity. Exams are like the homework but harder, which made them terrible. It was like this in both classes, but you should be good if you go to every single office hour session.

Heavy workload, hard exams