# For Wednesday, March 1st, 2023

For Wed:

1. On canvas, please submit an up-to-date version of your self-eval sheet.
2. There is no proof for feedback, since I want to give you more time to study for your Sets test on Wednesday.
3. You can find solutions to the last proof for feedback under “Materials Archive”.
4. Problems to study for your sets test:
1. Example study problems.  Solutions here.
2. You can also do exercises from Sections 1.1 – 1.7 of Hammack.
3. The example sheet doesn’t contain too many with pictures.  Look at Hammack, Section 1.2 Exercises part B, Figures 1.2, 1.4, 1.5, 1.6.  In class, for example, we drew some pictures in the real Cartesian plane (a square, a disc, a line), and asked whether they were Cartesian products or not.  Don’t forget about these types of sets.
5. Here’s a reminder of the material:
1. basic definitions including set, element, equality, empty set, cardinality, subset
2. Set-builder notation and interval notation
3. ordered pairs, Cartesian products and powers, subset and powersets, including cardinality of such
4. operations (union, intersection, difference), universe, complement, Venn diagrams to visualize these