Rings and Subrings
Monday, May 18: the definition of a ring, examples of rings, and how to prove that a set is or is not a ring.
In the definitions and theorems file, you should be looking at page 6.
Video lectures:
✎ Assignment:3.1 # 1, 5b, c, f, 6a,b
Tuesday May 19: proving properties of rings (similar to proofs you did earlier for groups)
Video Lectures:
✎ Assignment (.docx) also available as a .pdf
Wednesday May 20: study for the quiz on rings and properties of rings.
The quiz has 5 problems:
one like 3.1 #5, one like 3.1 #6, one like 3.1 #1, and two proofs
(chosen from those in the second assignment, but with only short hints,
no fill-in-the-blank structure).
Thursday, May 21: Take the quiz
How to take the quiz: document explanation, or video demo