eolas/neuron/d01ec7d6-3cb6-49cf-8ad7-eac41eb5b055/Biconditional_Introduction.md

tags
logic

Biconditional introduction

The biconditional means if P is the case, Q must be the case and if Q is the case, P must be the case. Thus to introduce this operator we must demonstrate both that Q follows from P and that P follows from Q. We do this via two sub-proofs.