Day 19: mat385

• Announcements
  • Homework 2.5 is due
  • Reminder: we've agreed to push Test 2 back two weeks, until after Spring break. It will be the 20th of March.

• Today we begin section 3.1: Sets

Links:

• A nice Venn diagram applet (for the basic ideas).
• A proof that some infinite sets are bigger than others.