Metamath Proof Explorer


Theorem animorrl

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

Ref Expression
Assertion animorrl φ ψ ψ χ

Proof

Step Hyp Ref Expression
1 simpr φ ψ ψ
2 1 orcd φ ψ ψ χ