To Know: There is a pigeonhole proof quiz on canvas. Check canvas for available oral exams to schedule.

To Know: On Monday we’ll start talking about graph theory. We’ll use it to practice methods of proof, including induction, and return to the problem we started Day 1 of class with.

To Do:

Read Section 3.9 of Hammack, where he discusses the pigeonhole principle and its related “division principle” and does a couple of nice problems with it.