| WEEK # |
TOPICS |
| 1 |
Introduction
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Platonic solids - Counting faces, edges, and vertices
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Planar graphs, duality
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Euler's formula for planar graphs - A constructive proof
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Non-existence of a sixth platonic solid
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Proving non-planarity by counting
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| 2 |
Counting 101
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First Law of Counting - Multiplying the possibilities
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Shepard's Law - To count the sheep, count the feet
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Counting by cases - Break it down and add it up
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Counting by subtraction - Cases to exclude
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| 3 |
Counting Sets
- Set theory and Boolean logic
- Inclusion/exclusion - Easy as PIE
- How many handshakes?
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| 4 |
Counting Subsets
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Binomial coefficients
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The wonders of Pascal's triangle
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Counting by block walking
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Counting by committee
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The most useful combinatorial identity known to man - "The Hockey Stick"
-
The n days of Christmas
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| 5 |
Problem Solving
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Applying what we know - Examples of counting
How to recognize an apparently unfamiliar problem
What to do when you are lost in the forest - How to get unstuck
More examples - kids and candy, flower arrangements
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| 6 |
Discrete Probability
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| 7 |
More Probability
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| 8 |
Graph Theory
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A whirlwind tour
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Vertices, edges, degree, paths, cycles
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Connectivity and components
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Acyclic graphs - Trees and forests
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Directed graphs
|
| 9 |
More Graph Theory
-
Eulerian tours
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Graph coloring
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Ramsey Theory
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Turan's Theorem
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| 10 |
Contest Problems
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