I can see he's smart! But he writes too fast and messy so if you miss on part then you can't move on. Even though he gave out his own hand written notes, i got confused because it was sometimes different from the notes i took in class. I wasted ssssso much time trying to staighten out two versions of messy notes. And he wrote homework questions which were so hard that sometimes I didn't even understand what the question really was. If the exams were not based on the sample questions he gave out (they're pretty similar!!) i would have dropped his class earllllly. So if you are going to take his class, focus on the sample exam questions!

i am a pure math major who really loved the class and loved him as a professor he does everything a professor should do for an upper div math class, which is not go straight from the book, he created his own notes and insights about the material which was amazing, he sometimes goes above and beyond with some of the material, he goes off on tangents often, and is a bit disorganized but just as the other eval said "thats just his style" i honestly consider him one of the greatest math teachers ive had, hes also an ispiration, very brilliant man. he hand writes his assignments which is amazing he gets right to the point, and the tests are definetly easier than the homewokr. alli did to study for the tests was do the homework problems and go over his noted and the way he did the proves, and i did pretty well.
HOWEVER i do not recommend takign him for a lower div math class even though i havent had him for any i could tell he would not be suitable for lower divs.