MATH2230B - Complex Variables with Applications - 2019/20

Course Year: 


  • There is NO tutorial on the first week
  • Since Feb. 17th, we will resume our lectures online. You will receive an invitation before the lectures so you can join the classroom on Zoom. The online lecture will last till university announce its end. As for assessment, we suspend quiz at this moment. Midterm exams will be postponed till after the university resume fact-to-face lecture. As for homework, we will assign it like before weekly. Handed-in homework can be submitted to TA through email.
  • Due to the announcement from education department of HK, we cannot resume face-to-face lecture before Apr. 24. So I make the following changes for the assessment of the lecture. Homework problem: 50%; Final exam: 50%. All homework since the week of Feb.26 (including the week of Feb. 26) will be required to turn in through either email or blackboard. All announcements on my website will also be posted in blackboard.

General Information


  • YU, Yong
    • Office: LSB 214
    • Tel: 39438900
    • Email:
    • Office Hours: Any time/ by appointment

Teaching Assistant

  • TAI, Ho Man
    • Office: LSB 232
    • Tel: 3943 5294
    • Email:
  • LUO, Kaihui
    • Office: LSB 232
    • Tel: 3943 5294
    • Email:

Time and Venue

  • Lecture: Mo 4:30PM - 6:15PM, LSB LT2; We 4:30PM - 5:15PM, Y.C. Liang Hall 103
  • Tutorial: We 5:30PM - 6:15PM, Y.C. Liang Hall 103

Course Description

You will be evaluated by homework, quiz, midterms and final examinations. Homework problem will be assigned weekly. Only two sets of homework will be required to hand in and graded. Please pay attention, NOT ALL homework problems have to be taught in class. If you see some unfamiliar homework problems, please try your best to work out. Otherwise I would be very pleased to discuss them with you. Starting from the second week (the week starting on Jan.13), there will be a 15-min short quiz on Wednesday lecture. It will be held every two weeks. The quiz is used to test basic concepts that you will have learned. Please be reminded that all the course works will be returned on your tutorial class.


  • Complex Variables and Applications, Ninth Edition, by James Ward Brown/Ruel V. Churchill


  • Complex Analysis, Princeton lectures in analysis II, by Elias M. Stein/Rami Shakarchi
  • Complex Analysis: An Introduction to the Theory of Analytic Functions of One Variable, by Lars Ahlfors
  • Fundamental of Complex Analysis, by E. B. Saff and A. D. Snider, Prentice Hall
  • Visual Complex Analysis, by T. Needham, Cambridge University Press

Lecture Notes

Tutorial Notes


Assessment Scheme

Homework 50%
Final Exam 50%

Honesty in Academic Work

The Chinese University of Hong Kong places very high importance on honesty in academic work submitted by students, and adopts a policy of zero tolerance on cheating and plagiarism. Any related offence will lead to disciplinary action including termination of studies at the University. Although cases of cheating or plagiarism are rare at the University, everyone should make himself / herself familiar with the content of the following website:

and thereby help avoid any practice that would not be acceptable.

Assessment Policy

Last updated: February 26, 2020 18:23:44