Table of Contents
Proof by Contradiction
How to Write a Proof by Contradiction
Gotchas
Resources
Proof by Contradiction
How to Write a Proof by Contradiction
Assume the thing (P) we want to prove is false
Reason to a contradiction
Conclude that (P) must therefore be true
Gotchas
Make sure that your assumptions and statements during “reason to a contradiction” are correct.
Resources
Proofs by Contradiction by Larry Cusick
Proof by Contradiction by Richard Hammack