Metamath Proof Explorer


Theorem animorlr

Description: Conjunction implies disjunction with one common formula (3/4). (Contributed by BJ, 4-Oct-2019)

Ref Expression
Assertion animorlr φ ψ χ φ

Proof

Step Hyp Ref Expression
1 simpl φ ψ φ
2 1 olcd φ ψ χ φ