Class Info

  • Date: Tuesday, 10/27/20, 4:05 – 5:45pm
  • Meeting Info: The class will meet live on zoom today (password is the same as last time – send me an email if you need a reminder).

To-Do Before Class

  • N/A


  • Chapter 6: Proof by contradiction
  • Topics in Number Theory #3: Applying Euclid’s Lemma


  • Understand and apply the structure of proof by contradiction to prove theorems.


Meeting recording.

Lecture notes:

To-Do After Class

Your written assignment “Proof Journal” is due next week on Tuesday 11/3.

Homework due Tuesday 11/3: Chapter 6: 3,4,5,8,9
(Upload link)

Submitting written work (instructions)

  • Take a picture of each written page of your assignment, and combine the pictures into a single pdf document.
  • Give the document a name that will help me identify it, for example: “JRodriguez-Class1Homework.pdf”
  • Use this upload link to upload your pdf (this link connects to a Dropbox folder, but you do NOT need to have a Dropbox account to use it).