For Wednesday, April 26th, 2023

Proof for feedback:

function on sets proof


  1. Read through the administrative announcements from the last daily post.  Topics include FCQs (please fill them out!), opportunities for grade improvement, etc.
  2. Class was recorded on Mon Apr 24 and is on canvas.
  3. The proof quiz will be a quiz about showing something is or is not injective/surjective/bijective.  Review using Hammack, section 12.2.
  4. In class, I left one half of one proof unfinished.  Please complete it.  (See class notes.)
  5. Here are Pigeonhole Principle puzzle problems.  Please work on them.  The challenge is to find out what are the pigeons, what are the holes, which will lead you to a proof.