Curves and surfaces in three-dimensional Euclidean space, first and second fundamental forms, Gaussian and mean curvature, geodesics, Gauss-Bonnet theorem, and non-Euclidean geometry.

Prerequisites: Math 6A with a minimum grade of C; and Math 108A or 117 with a minimum grade of C.

4

Units

Optional

Grading

1

Passtime

None

Level Limit

Letters and science

College
Unlocks MATH 147B
These majors only matcs math finms mthsc amath
ZHAO XIAOLEI
Xiaolei Zhao
3.7
12 reviews
AI predicted, based on past grading trends of the course and instructor, class info, and 127 other factors
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Summer 2026 . Zhao Xiaolei
PHELP1425
M T W R
12:30 PM - 13:35 PM
Spring 2024 . Dai X Z
CHEM 1171
T R
14:00 PM - 15:15 PM
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MATH 147A Zhao Xiaolei Summer 2024 Total: 26
MATH 147A Labutin D A Summer 2025 Total: 29
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12
3.7
147A . Zhao Xiaolei 1 Year, 6 Months Ago

Really helpful lectures, and he's good at answering questions. He didn't assign a ton of homework, but what he did assign was pretty hard so going to office hours was necessary for me. The tests were hard, but he graded and curved SUPER generously. Honestly nothing bad to say, I'd recommend him to anyone.

0 helpful 0 unhelpful
math117 . Zhao Xiaolei 1 Year, 1 Month Ago

Straight up just copied out of a textbook. He did not explain proofs well enough that made sense. i'd avoid him. grades on a curve cuz the tests make no sense. or maybe im just stupid...

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math117 . Zhao Xiaolei 1 Year, 2 Months Ago

Smart and handsome guy. Really into math stuff. But the grading is a bit harsh but luckily he curves the grades finally..

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math117 . Zhao Xiaolei 1 Year, 6 Months Ago

Don't take him. Final and midterm weight heavy, and the tests are hard. A lots of assignments have to do. 117 is stressful and the lecture is not helpful.

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math117 . Zhao Xiaolei 1 Year, 6 Months Ago

He only copy down the textbook on the whiteboard. test are difficult and tough grader, avoid him!!! I don't think he's aware that this is a summer course.

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MATH111ABC . Zhao Xiaolei 1 Year, 6 Months Ago

midterm/final average was low af. doesnt really teach and expects you to review stuff on your own. tests are difficult

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See all 12 reviews
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