To do for Wednesday:
- Please fill out your Proof by Contrapositive Setup Sheet, and your Proof by Induction Setup Sheet. We will take them up in class.
- Finish the weekend’s homework, if you didn’t have time to.
- Read Hammack, Section 2.7, and do the odd exercises and compare to the back.
- Read Hammack, Section 2.9, and do the odd exercises and compare to the back.
- Correction: In one of the classes, I called both symbols “universal quantifiers”. That’s incorrect. The “for all” symbol is a universal quantifier, and the “there exists” is an existential quantifier. To cheer you up.
- If you missed last monday/wednesday’s induction lectures, here is a quick summary: PDF Presentation of Trees having n-1 edges and accompanying video.
- Consider coming to office hour to earn a missing sets badge. The current hours (although they don’t generally change) are listed under “About” on the navigation bar above. Below is more information on this opportunity.
HOW TO EARN a Sets Badge in Office Hour:
- You may earn a missing sets badge (maximum one per week) by coming to office hour (you can email if the regular times don’t work) and doing the following:
- Arrive with a one-page study guide to the content of the relevant badge. This should include definitions of the relevant terms, and examples and non-examples, as well as a list of tricky confusions and their resolutions. You have freedom of design, but I want to see a solid effort to master and present the material, not a scribbled summary. (You can write it by hand if you can produce something as tidy and organized as LaTeX.)
- In office hour, after discussing the study guide and any clarifications needed, I will assign you a tricky badges problem, and you will solve it on the board or at the desk in front of me.
- If you do these things well, you will earn your missing badge.