Metamath Proof Explorer


Theorem com3r

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

Ref Expression
Hypothesis com3.1 φψχθ
Assertion com3r χφψθ

Proof

Step Hyp Ref Expression
1 com3.1 φψχθ
2 1 com23 φχψθ
3 2 com12 χφψθ