Tag: Proof by contradiction

• Techniques of Proof: Why Induction and Contradiction Are ValidWhy induction is valid, how it breaks without a base case, how proof by contradiction differs from contraposition, and two proofs that no rational number squares to 2.MathematicsFoundations of MathematicsUndergraduateMathematical inductionProof by contradictionContrapositionPeano axiomsIrrational numbers~29 min