56650
Tuesday, Thursday, 11 a.m.–12:30 p.m.
Brown, James and Ruel Churchill. Complex Variables and Applications. 8th ed. Boston: McGraw-Hill Education, 2009.
This course requires M427K or M427L with a grade of at least C or consent of the instructor.
There will be 5 homework assignments; see the homework policy below.
Friday, May 10, 9:00 a.m.–12:00 p.m.
TBA
This scale is subject to revision.
| A | 93–100 | C | 73–76 |
| A− | 90–92 | C− | 70–72 |
| B+ | 87–89 | D+ | 67–69 |
| B | 83–86 | D | 63–66 |
| B− | 80–82 | D− | 60–62 |
| C+ | 77–79 | F | 0–59 |
Attendance is recommended but not required.
M361 is an introduction to complex analysis. Topics include the theory of complex analytic functions, Cauchy’s integral formula, contour integrals, Laurent expansions, harmonic functions, and conformal mapping.
The following textbook is required:
Brown and Churchill is available on reserve at the Kuehne Physics-Math-Astronomy library. I also recommend the following optional references:
Cartan, Henri. Elementary Theory of Analytic Functions of One or Several Complex Variables. New York: Dover Publications, 1995.
Needham, Tristan. Visual Complex Analysis. New York: Oxford University Press, 1997.
Pólya, George, and Gordon Latta. Complex Variables. New York: Wiley, 1974.
Stein, Elias M., and Rami Shakarchi. Complex Analysis. Princeton, NJ: Princeton University Press, 2003.
Wegert, Elias, and Gunter Semmler. “Phase Plots of Complex Functions: A Journey in Illustration.” Notices of the AMS 58, no. 6 (2011). [PDF]
Problem sets are worth 10% of your grade. There will be five assignments due over the course of the semester. Homework will be collected at the beginning of lectures. Late homework will not be accepted.
I encourage you to work with other students on homework problems. However, your homework must be in your own words. Write up your homework by yourself; if you worked with anyone on the homework, you must indicate so. See the note below on academic integrity.
| Due date | Problem set | Solutions |
|---|---|---|
| February 7 | [PDF] | [PDF] |
| February 21 | [PDF] | [PDF] |
| March 28 | [PDF] | [PDF] |
| April 11 | [PDF] | [PDF] |
| May 2 | [PDF] | [PDF] |
In addition to the final exam, there will be two midterm exams during the semester whose dates are noted above. The midterms will be administered during lectures. The midterms and final are worth 90% of your grade with each midterm worth 20% and the final worth 50%. The final will be cumulative.
Calculators and notes will not be permitted on exams. Bring your UT ID with you to each exam.
If you cannot write an exam, let me know at least two weeks in advance. For each exam, there will be a make-up offered for students who missed the original due to an excused absence or medical emergency. If you cannot write the make-up exam, the exam will be dropped.
| Exam | Date | Text | Solutions |
|---|---|---|---|
| Midterm 1 | March 7 | [PDF] | [PDF] |
| Midterm 2 | April 16 | [PDF] | [PDF] |
| Final | May 10 |
If you need to email me regarding this course, please include your EID. I will not discuss grades over email.
In accordance with UT Austin policy, please notify me at least 14 days prior to the date of observance of a religious holiday. If the holiday conflicts with an exam, I will allow you to write a make-up exam within a reasonable time.
Students with disabilities may request appropriate academic accommodations from the Division of Diversity and Community Engagement, Services for Students with Disabilities at 471-6259 (voice), 232-2937 (video), or http://www.utexas.edu/diversity/ddce/ssd.
If you work with other students, indicate so on your homework. There is no penalty for working with other students, but you must write up your homework by yourself. You may use a calculator or computer system such as Sage or MATLAB on your homework, but calculators and computers are forbidden on exams. Read the University’s standard on academic integrity found on the Student Judicial Services website.
Electronic course instructor surveys (eCIS) will be available for the last two weeks of the semester. During the survey period, you may fill out eCIS on UT Direct.
This plan may change as the semester progresses. Lecture notes will be posted periodically.
| Week | Tuesday | Thursday |
|---|---|---|
| January 15 | Introduction to class; the complex number system | The exponential function; Euler’s theorem |
| January 22 | Functions of a complex variable; log and arctan | Complex differentiability; the Cauchy-Riemann equations |
| January 29 | Conformal mapping; harmonic functions | Work and flux; a physical interpretation of the Cauchy-Riemann equations |
| February 5 | Line integrals and the Cauchy-Goursat theorem | Primitives of holomorphic functions |
| February 12 | Some contour integrals | The Cauchy integral formula |
| February 19 | More definite integrals | Power series; a review of some real analysis |
| February 26 | Taylor expansions of holomorphic functions | Harmonic functions |
| March 5 | Review | Midterm 1 |
| March 19 | The maximum modulus principle, Liouville’s theorem, and the fundamental theorem of algebra | Morera’s theorem and applications |
| March 26 | Singularities and Laurent expansions; phase plots | The residue theorem |
| April 2 | More definite integrals | Integration workshop |
| April 9 | Integration workshop | The inverse Laplace transform |
| April 16 | Midterm 2 | The argument principle and Rouché’s theorem |
| April 23 | Introduction to elliptic functions | Conformal mapping and fractional linear transformations |
| April 30 | Schwarz-Christoffel transformations | Applications to physics |
| January 15 | First day of class |
| January 17 | Final day of official add/drop period |
| January 21 | Martin Luther King Day |
| January 30 | Official enrollment taken; final day to drop without academic penalty |
| March 7 | Midterm 1 |
| March 11–16 | Spring break |
| April 1 | Last day to drop; last day to change to pass/fail |
| April 16 | Midterm 2 |
| April 22 | eCIS opens |
| May 2 | Final day of class |
| May 3 | eCIS closes |
| May 10 | Final exam |