Math 220: Introduction to Proofs
TTh 1:05-:2:20pm
Jessica Sidman, jsidman at amherst dot edu
Office hours
Gradescope
Course notes

Tuesday Thursday
9/2 9/4
  • Read: Sections 1.5-1.7.
  • Video lecture: Operations on sets
  • Self-check problems:
    • Section 1.5: 1abc, 3ad
    • Section 1.6: 1acd, 5
  • Quiz: Self-check problems from Sections 1.1 and 1.2.
  • Journal check-in: due Friday on Gradescope. If you want to use LaTex, you can use this starter code
9/9
  • Read: Sections 2.1-2.3.
  • Video: Introduction to logic
  • Self-check problems:
    • Section 2.2:1, 3, 5, 7, 9, 11
    • Section 2.3: 1, 3, 5, 7, 9, 11
  • Homework 1 due.
  • 9/11
  • Read: 2.7-2.10.
  • Video: Quantifiers and negation
  • Self-check problems:
    • Section 2.7: 1
    • Section 2.9: 3, 5, 7
    • Section 2.10: 1, 3
  • Quiz: Sections 1.5-1.7.
  • Journal check-in: due Friday on Gradescope.
  • 9/16
  • Read: Page 115, Pages 118-120, Section 5.3.
  • Video: Introduction to direct proof: even and odd integers
  • Self-check problems:
    • Chapter 4:1, 3, 5
  • Homework 2 due.
  • 9/18
  • Read: Page 121 - first proposition on Page 122, Sections 8.1-8.3..
  • Video: Examples of direct proof: divisibility and sets
  • Self-check problems:
    • Chapter 4: 7, 11
    • Chapter 8: 1, 7
  • Quiz: Quantifiers and negations: problems like the self-check problems from Sections 2.7, 2.9, 2.10.
  • Journal check-in: due Friday on Gradescope.