Absorption Laws (Logic)/Conjunction Absorbs Disjunction/Reverse Implication

Theorem

 * $p \vdash p \land \left({p \lor q}\right)$

Proof

 * align="right" | 2 ||
 * align="right" | 1
 * $p \lor q$
 * $\lor \mathcal I_1$
 * 1
 * 1