Mathematics 185, Spring 2011

Introduction to Complex Analysis

Lectures: MWF 4:10--5:00pm, Room 6, Evans Hall.

Instructor: Michael VanValkenburgh, 895 Evans Hall.

Office Hours: There will be no scheduled office hours for the remainder of the semester. Instead, we will have reviews from 4:10-5:00pm, Monday (5/2), Wednesday (5/4), and Friday (5/6), in our regular classroom. Bring questions.

A description of the course: Math 185, Spring 2011 (pdf)


Breaking News:

During Dead Week, we will have reviews from 4:10-5:00pm, Monday, Wednesday, and Friday, in our regular classroom. Bring questions.

There will be no scheduled office hours for the remainder of the semester.

Friday 5/13: FINAL EXAM, 8-11am, in 106 Stanley Hall.


Homework:

Homework 1, Due Monday, January 31, 2011
Homework 1, Solutions to Selected Problems
Homework 2, Due Monday, February 7, 2011
Homework 2, Solutions to Selected Problems
Homework 3, Due Monday, February 14, 2011
Homework 3, Solutions to Selected Problems
Homework 4, Due Monday, February 28, 2011
How to Center a Polynomial at some $a\in C$
Homework 4, Solutions to Selected Problems
Homework 5, Due Monday, March 7, 2011
Homework 5 Solutions
Homework 6, Due Wednesday, March 16, 2011
Homework 6 Solutions
Homework 7, Due Monday, April 11, 2011 Exercise 5 modified on April 8
Homework 7, Solutions to Selected Problems
Homework 8, Due Monday, April 18, 2011
Hints for Homework 8
Homework 8, Solutions to Selected Problems
Homework 9, Due Wednesday, April 27, 2011
Homework 9, Solutions to Selected Problems



Exams:

Midterm 1: February 16, in class
Midterm 1 Solutions (On 3/27/11 I added a second solution to Problem 2. One of you used this proof on the exam.)
Midterm 1 Scores
Midterm 2: April 1, in 70 Evans at the regular time
Midterm 2 Solutions
Final Exam: May 13, 8-11am, 106 Stanley Hall.
Final Exam
Final Exam Solutions



Lecture Notes:

Disclaimer: These notes are meant to be outlines, summarizing and sometimes supplementing the lectures. They are not substitutes for the lectures.
Lecture 1, Wednesday, January 19, 2011
Lecture 2, Friday, January 21, 2011
Lecture 3, Monday, January 24, 2011
Lecture 4, Wednesday, January 26, 2011
Lecture 5, Friday, January 28, 2011
Lecture 6, Monday, January 31, 2011
Lecture 7, Wednesday, February 2, 2011
Lecture 8, Friday, February 4, 2011
Lecture 9, Monday, February 7, 2011
Lecture 10, Wednesday, February 9, 2011
Answering a Question about Mobius Transformations.
Lecture 11, Friday, February 11, 2011
Lecture 12, Monday, February 14, 2011
Lecture 13, Friday, February 18, 2011
Lecture 14, Wednesday, February 23, 2011
Lecture 15, Friday, February 25, 2011
Lecture 16, Monday, February 28, 2011
Lecture 17, Wednesday, March 2, 2011
Lecture 18, Friday, March 4, 2011
Lecture 19, Monday, March 7, 2011
Cauchy's Theorem for Multiply-Connected Domains
Lecture 20, Wednesday, March 9, 2011
Lecture 21, Friday, March 11, 2011
Lecture 22, Monday, March 14, 2011
Lecture 23, Wednesday, March 16, 2011
Lecture 24, Friday, March 18, 2011
Lecture 25, Monday, March 28, 2011
Lecture 26, Wednesday, March 30, 2011
Lecture 27, Monday, April 4, 2011
Lecture 28, Wednesday, April 6, 2011
Lecture 29, Friday, April 8, 2011
Lecture 30, Monday, April 11, 2011
Lecture 31, Wednesday, April 13, 2011
Lecture 32, Friday, April 15, 2011
Lecture 33, Monday, April 18, 2011
Lecture 34, Wednesday, April 20, 2011
Lecture 35, Friday, April 22, 2011
Lecture 36, Monday, April 25, 2011
Lecture 37, Wednesday, April 27, 2011
Lecture 38, Friday, April 29, 2011



Other Notes:

Some notes on sets, logic, and mathematical language by Professor George Bergman


Syllabus (subject to change):

DateTopics Book
Wed 1/19 Basic properties of complex numbers, Part I § 1, 2, 3, 4, 5
Fri 1/21 Basic properties of complex numbers, Part II § 6, 7, 8, 9, 10
Mon 1/24 Stereographic projection, functions of a complex variable § 11, 12, 13, 14
Wed 1/26 Limits and differentiation § 15, 16, 17, 18, 19, 20
Fri 1/28 Chain rule, Cauchy-Riemann equations § 21, 22, 23
Mon 1/31 Analytic functions, curves in the complex plane § 24, 25
Wed 2/2 Conformality, harmonic functions, e^z revisited § 101, 26, 29
Fri 2/4 log, Log, complex exponents, trig functions § 30, 31, 32, 33, 34
Mon 2/7 trig/hyp functions and their inverses, Mobius transf.s § 34, 35, 36, 90, 91, 92
Wed 2/9 Mobius transformations § 93, 94, 95
Fri 2/11 Contour integrals § 37, 38, 39, 40
Mon 2/14 Path independence and equivalent things § 41, 42, 43, 44, 45
Wed 2/16 MIDTERM 1
Fri 2/18 The Cauchy-Goursat Theorem, Part I § 46, 47
Mon 2/21 NO CLASS (Presidents' Day)
Wed 2/23 The Cauchy-Goursat Theorem, Part II § 48, 49
Fri 2/25 Cauchy's Integral Formula, Part I § 50, 51
Mon 2/28 Cauchy's Integral Formula, Part II: Higher Derivatives § 52
Wed 3/2 Morera, Cauchy's Ineq.s, Liouville, Fund. Thm. of Alg. § 53
Fri 3/4 Mean Value Property, Maximum Principle § 54
Mon 3/7 Review of Complex Integration, I
Wed 3/9 Review of Complex Integration, II
Fri 3/11 Basic facts about infinite series, Taylor's Theorem § 55, 56, 57, 58
Mon 3/14 Laurent series and Laurent's Theorem, Part I § 59, 60, 61, 62
Wed 3/16 Laurent series and Laurent's Theorem, Part II § 59, 60, 61, 62
Fri 3/18 Laurent series and Laurent's Theorem, Part III § 59, 60, 61, 62
Mon 3/21-25 NO CLASS (Spring Break)
Mon 3/28 Integration and Differentiation of Power Series § 63, 64, 65
Wed 3/30 Review
Fri 4/1 MIDTERM 2 ***in 70 Evans*** Covers Lectures 1--24
Mon 4/4 Rad. of Conv., Taylor Series with Remainder § 63, 64, 65
Wed 4/6 Midterm Results, Zeros of Analytic Functions § 75
Fri 4/8 Zeros of Analytic Functions, Begin Isolated Sing.s § 75, 68, 69
Mon 4/11 Three Types of Isolated Sing.s, Local Behavior § 72, 76, 77
Wed 4/13 Casorati-Weierstrass Theorem, Residue Theorem § 77, 70, 71
Fri 4/15 Calculating certain integrals by residues, Part I § 78-85
Mon 4/18 Calculating certain integrals by residues, Part II § 78-85
Wed 4/20 Calculating certain integrals by residues, Part III § 78-85
Fri 4/22 Calculating certain integrals by residues, Part IV § 78-85
Mon 4/25 Calculating certain integrals by residues, Part V § 78-85
Wed 4/27 Calculating certain integrals by residues, Part VI § 78-85
Fri 4/29 Calculating certain integrals by residues, Part VII § 78-85
RRR Week We will have reviews from 4-5pm, MWF, in our regular classroom.
Friday 5/13 FINAL EXAM (8-11am) in 106 Stanley Hall