Intro to Proofs – Countability – Intro

This is a video for a university course about Introduction to Mathematical Proofs.

Topics covered:

1. Hilbert’s Hotel
2. Definition of countability
3. Proof that some specific sets are countable (like the integers)

This was originally made for the University of Toronto Mississauga in Summer 2020, for MAT102.

All material for the course can be found at:

Introduction to Proofs