Friday, January 16

Today’s Discussion Topics

• Go over discussion topic and homework from last time

Today’s New Topics

• Set Notation and the Real Numbers
• Prove: If n^2 is even, then so is n
• Prove: The square root of 2 is irrational

Tonight’s Homework

• Read Appendix E
• Prove that the square root of 3 is irrational
• Discussion topic for next class: Compare and contrast the undefined terms for the 5 axiom systems in Appendix B.