SYLLABUS AND HOMEWORK

Mathematics 4450 and 5450
Spring 2016

Introduction to Complex Variables

This document was last modified on: UTC

Homework is due in class and must be stapled, with your name on it, to receive credit.

You may find the Mathematics Help Room (MATH 175) to be useful as a meeting point for discussing homework.

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Date Topics covered Reading Homework Assignments
Monday January 11
Introduction


Wednesday January 13
Linear algebra
Introduction to linear algebra.
Read the following .pdf on linear algebra

Friday January 15
Linear algebra continued.


HW1: Due Friday January 15

Exercises: 1.48, 1.49, 1.55, 1.57, 1.59, on the following .pdf
Monday January 18
NO CLASS MLK

NO CLASS MLK
Wednesday January 20
Complex numbers
Introduction to complex numbers.
Chapter 1
Friday January 22
Complex exponential, powers and roots.  The Riemann sphere and stereographic projection.



HW 2: Due Friday January 22

Chapter 1 Exercises:
Section 1.1:  2, 15, 26.
Section 1.2: 1, 4, 8, 20, 21.

Exercises 6.3-6.15 on the following .pdf
Monday January 25
Holomorphic functions
Functions of a complex variable, limits and continuity, holomorphicity.
Chapter 2
Wednesday January 27
The Cauchy--Riemann equations.

Friday January 29
Elementary functions
Polynomials and rational functions, the exponential function.

Chapter 3
HW 3: Due Friday January 29

Chapter 1 Exercises:
Section 1.3: 2, 5, 22.
Section 1.4: 3, 9, 23.
Section 1.5: 4, 17.
Section 1.6: 2-8.

Exercises 6.17-6.25 on the following .pdf

Recommended (not for credit):
Section 1.6: 9-14, 16-18.
Monday February 1
Trigonometric and hyperbolic functions, the logarithmic function, washers, wedges and walls.


Wednesday February 3
Complex powers and inverse trigonometric functions, applications. 

Friday February 5
Analytic functions
Sequences and series, Taylor series, Power series.
Chapter 5

Read the following .pdf on uniform convergence.
HW 4: Due Friday February 5

Chapter 2 Exercises:
Section 2.1: 1(a), (b), 5, 12, 14, 15
Section 2.2: 1, 2, 3, 5, 9, 18, 20, 22
Section 2.3: 2, 4, 6, 7(b), 14, 16
Section 2.4: 1, 2, 4, 10, 15
Monday February 8
Homework review


Wednesday February 10
Review

Friday February 12
MIDTERM I

MIDTERM I
Monday February 15
Convergence, Laurent series, zeros and singularities.


Wednesday February 17
The point at infinity, analytic continuation.

Friday February 19
Complex integration.
Contours, contour integrals, independence of path.
Chapter 4 HW 5: Due Friday February 19

Chapter 3 Exercises:
Section 3.1:# 2, 3(a), 4, 7, 11, 14
Section 3.2:# 3, 7, 14, 18
Section 3.3:# 8, 9, 11
Section 3.5:# 1, 5, 6, 11
Monday February 22
Integration continued.



Wednesday February 24
Cauchy's integral theorem, Cauchy's integral formula and its consequences.

Friday February 26
Bounds for holomorphic functions, applications.
HW 6: Due Friday February 26

Chapter 5
Exercises:
Section 5.1: #1, 5, 6, 13, 16
Section 5.2: #1, 2, 5, 10, 13
Section 5.3: #1, 2, 3, 10, 12, 13
Section 5.5: #1, 3, 9
Section 5.6: #1, 2, 5, 6, 9
Monday February 29
Reside theory
Residue theorem, trigonometric integrals.
Chapter 6

Wednesday March 2
Improper integrals.  

Friday March 4
Improper integrals involving trigonometric functions.
HW 7: Due Friday March 4


Chapter 4 Exercises:
Section 4.1 #2, 3, 11
Section 4.2 #2, 3, 8, 12, 15
Section 4.3 #1, 2, 3, 4, 5, 10, 11, 12

Do the exercises on this .pdf.

Recommended (not for credit):
Section 4.4 #1, 3, 9, 11, 15
Section 4.5 #1, 2, 3, 6, 9, 10, 11
Section 4.6 #3, 4, 5, 6, 12, 14, 15
Section 4.7 #1, 2, 3, 4, 5, 6, 7, 8, 9


Monday March 7
Indented contours.

Wednesday March 9
Integrals involving multiple-valued functions.

Friday March 11
The argument theorem and Rouche's theorem.
HW 8: Due Friday March 11

Chapter 6 Exercises:
Section 6.1 #1, 2, 3, 7
Section 6.2 #1, 2, 3
Section 6.3 #1, 2, 3, 8
Section 6.4 #1, 2, 3
Section 6.5 #3, 4, 5
Section 6.7 #1, 2, 4, 5, 6

Recommended (not for credit):
Section 6.3 #14, 15, 18
Section 6.7 #13, 14, 18
Monday March 14
Homework review


Wednesday March 16
Review

Friday March 18
MIDTERM II


Week of March 21-March 25
SPRING BREAK
SPRING BREAK
Monday March 28
Conformal mapping
 Chapter 7

Wednesday March 30
Harmonic functions.  Invariance of Laplace's equation.

Friday April 1 Geometric considerations

HW 9: Due Friday April 8

Chapter 2 Exercises:
Section 2.5 #1, 5, 9, 21

Chapter 3 Exercises:
Section 3.4:# 1, 2, 3

Chapter 7 Exercises:
Section 7.1 #1, 2, 3
Section 7.2 #2, 4, 5, 10, 14

Recommended (not for credit):
Chapter 2 Exercises:
Section 2.5 #10, 20
Chapter 7 Exercises:
Section 7.2 #1, 3, 11
Monday April 4
Mobius transformations.

Wednesday April 6
The Schwartz--Christoffel transformation.

Friday April 8
Applications.
HW 10: Due Friday April 15

Chapter 7 Exercises:
Section 7.3 #1, 2, 3
Section 7.4 #5, 10, 11
Section 7.5 #1, 3, 4

Recommended (not for credit):
Chapter 7 Exercises:
Section 7.3 #1, 2, 3
Section 7.4 #12, 21, 22
Monday April 11
Transforms in complex analysis
Fourier series.
Chapter 8

Wednesday April 13
Fourier transforms. 

Friday April 15 Fourier transforms continued, and Laplace transforms.
HW 11: Due Friday April 29
Chapter 8 Exercises:
Section 8.1 #1, 7
Section 8.2 # 1(b), 3(a), 6(a), 7.
Monday April 18
Laplace transforms continued.


Wednesday April 20
z-transforms.

Friday April 22
Cauchy integrals and the Hilbert transform.

Monday April 25
Further topics


Wednesday April 27
Homework review



Friday April 29
Review


Thursday May 5
FINAL EXAM 7:30 PM - 10:00 PM ECCR 118
(Lecture Room)
FINAL EXAM FINAL EXAM

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I strongly encourage everyone to use LaTex for typing their homework.  If you have a mac, one possible easy way to get started is with texshop.  If you are using linux, there are a number of other possible ways to go, using emacs, ghostview, etc.  If you are using windows, you're on your own, but I'm sure there's something online.  Here is a sample homework file to use: (the .tex file, the .bib file, and the .pdf file).  It is probably easiest to just look at the .tex file, and start to experiment.  There is also the (Not so) short introduction to latex, which will answer most of your questions (although typing your question into your favorite search engine will probably work well, too).  You may also want to try https://cloud.sagemath.com/ or https://www.sharelatex.com/ for a cloud version.