Discrete Mathematics  21-228

Summer 2004
MTWRF 1:30-2:50
DH 2105

directions to ppb 342

useful links:

* Herbert Wilf's home page (You can download generatingfunctionology and East Side, West Side.)
* Alan Frieze's notes from 2002
* David Pollard's Lecture Notes on Probability

syllabus (pdf) (ps)

HW1 (pdf) (ps)   solutions (pdf) (ps)
HW2 (pdf) (ps)   solutions (pdf) (ps)
HW3 (pdf) (ps)   solutions (pdf) (ps)
HW4 (pdf) (ps)   solutions (pdf) (ps)
HW5 (pdf) (ps)   solutions (pdf) (ps)
HW6 (pdf) (ps)   solutions (pdf) (ps)
HW7 (pdf) (ps)   solutions (pdf) (ps)
HW8 (pdf) (ps)   solutions (pdf) (ps)
HW9 (pdf) (ps)   solutions (pdf) (ps)

exam 1 (pdf) (ps)   solutions (pdf) (ps)
exam 2 (pdf) (ps)   solutions (pdf) (ps)
exam 3 (pdf) (ps)   solutions (pdf) (ps)
exam 4 (pdf) (ps)   solutions (pdf) (ps)

midterm review questions (pdf) (ps)
midterm (pdf) (ps)   solutions (pdf) (ps)
revised midterm (pdf) (ps)   solutions (pdf) (ps)
final review questions (pdf) (ps)
final (pdf) (ps)   solutions (pdf) (ps)

Date
Topic
References
Monday, 5/17
Introduction: 3 ways of counting
Frieze's Notes, Day 0
Tuesday, 5/18 Counting: subsets, permutations, and combinations.
Lovasz, 1.3, 1.5-1.8
Frieze's Notes, Day 1
Wednesday, 5/19
Binomial Coefficients, Mathematical Induction,
Identities, the Binomial Theorem, Catalan Numbers
Lovasz, 2.1, 3.1, 3.5-3.7
Frieze's Notes, Day 2, Day 4
Thursday, 5/20
Asymptotic Behavior, Functions, the Pigeonhole Principle
Lovasz, 2.2, 2.4
Frieze's Notes, Day 5
Friday, 5/21
Exam 1, Fibonacci Numbers
Lovasz, 4.1-4.3
Monday, 5/24
Recurrence Relations: Examples
Solving Lin. Hom. Recurrence Relations.
Frieze's Notes, Day 11
handout (pdf) (ps)
Tuesday, 5/25
Solving Non-hom. Lin. Rec. Rel.
"Divide and conquer" recurrences
Frieze's Notes, Day 12
Wednesday, 5/26
Generating Functions: Solving Recurrences
Catalan Numbers
generatingfunctionology, 1.1-1.3
Frieze's Notes, Day 15
Thursday, 5/27
More Generating Functions:
Bell Numbers, Stirling numbers
generatingfunctionology, 1.6
East Side, West Side, 5.1-5.4
Friday, 5/28
Exam 2, More Bell Numbers

Monday, 5/31
No Class
Important Information
Tuesday, 6/1
Inclusion/Exclusion
Lovasz, 2.3
Frieze's Notes, Day 16
Wednesday, 6/2
Permutations and Derangements
Restricted Position Problems
Frieze's Notes, Day 14
Thursday, 6/3
Review
Midterm Exam distributed in class
review questions (pdf) (ps)
Friday, 6/4
Midterm Exam due at 2:50 in DH 2105

Monday, 6/7
Introduction to Probability
Probability Spaces, Uniform and Geometric Distribution
Independence, Conditioning, R.V's, Expectation
Lovasz, 5.1, 5.2
Pollard's Notes Chapters 1, 2
Frieze's Notes, Day 6, Day 8, Day 9
Tuesday, 6/8 Random Variables:  Binomial and Poisson
Bayes' Theorem
Pollard's Notes Chapters 3, 9
Frieze's Notes, Day 9
Wednesday, 6/9
Monty Hall Problem
Average-case analysis
Boole's Inequality, the probabilistic method
Frieze's Notes, Day 7, Day 8, Day 9
Pollard's Notes Chapter 1
Thursday, 6/10
Variance, Markov's Inequality
Chebycheff's Inequality
Law of Large Numbers
Frieze's Notes, Day 10
Pollard's Notes Chapter 4
Friday, 6/11
Exam 3

Monday, 6/14
Intro to Graph Theory:  Definitions and Examples
Lovasz, 7.1, 7.2
Frieze's Notes, Day 17, Day 18
Tuesday, 6/15
Euler Tours and Hamilton Cycles
Trees
Lovasz, 7.3, 8.1, 8.2
Frieze's Notes, Day 19, Day 20
Wednesday, 6/16
Counting Trees: Prufer Code
MST: Kruskal's Algorithm
Lovasz, 8.3, 8.4, 8.5, 9.1
Frieze's Notes, Day 19
Thursday, 6/17
Matching
Lovasz, Chapter 10
Frieze's Notes, Day 21
Friday, 6/18
Graph Coloring, Planar Graphs
Lovasz, 13.2, 13.3, 12.1
Monday 6/21
Coloring Planar Graphs
Directed Graphs
Lovasz, 12.2, 13.4
Frieze's Notes, Day 23
Tuesday, 6/22
Exam 4

Wednesday, 6/23
Vertex Covers, Tournaments

Thursday, 6/24
Final Exam distributed in class

Friday, 6/25
Final Exam due at 2:50 in DH 2105