For Friday, February 21, 2020

For Friday:

  • Finish up what you can of the worksheet from class today.  You’ll find the worksheet online including a hint sheet — with that you should be able to make further progress. This is the topic of Pigeonhole Principle and I will now assume you can use this as a proof method (in simpler circumstances).  Some examples with worked solutions can be found in Hammack, Section 12.3.
  • Badges on Friday will now include all Logic badges.  There’s one we haven’t discussed yet: Converse and Contrapositive.  This is a quick one, and I’ll discuss it briefly in class, but you can also look this up in your book.   The quiz will also include Sets badges for the second-to-last time, so please study any of those that you are missing.