Metamath Proof Explorer


Theorem com4r

Description: Commutation of antecedents. Rotate right. (Contributed by NM, 25-Apr-1994)

Ref Expression
Hypothesis com4.1 ( 𝜑 → ( 𝜓 → ( 𝜒 → ( 𝜃𝜏 ) ) ) )
Assertion com4r ( 𝜃 → ( 𝜑 → ( 𝜓 → ( 𝜒𝜏 ) ) ) )

Proof

Step Hyp Ref Expression
1 com4.1 ( 𝜑 → ( 𝜓 → ( 𝜒 → ( 𝜃𝜏 ) ) ) )
2 1 com4t ( 𝜒 → ( 𝜃 → ( 𝜑 → ( 𝜓𝜏 ) ) ) )
3 2 com4l ( 𝜃 → ( 𝜑 → ( 𝜓 → ( 𝜒𝜏 ) ) ) )