Modus Tollendo Ponens/Variant/Formulation 1/Forward Implication

Theorem

 * $p \lor q \vdash \neg p \implies q$

Proof

 * align="right" | 9 ||
 * align="right" | 7
 * $q$
 * Law of Identity
 * 7
 * $q$ still holds
 * $q$ still holds