Theorem com3r

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

Hypothesis
com3.1
\( \vdash \varphi \rightarrow \psi \rightarrow \chi \rightarrow \theta \)
Conclusion
\( \vdash \chi \rightarrow \varphi \rightarrow \psi \rightarrow \theta \)
Proof
com3.1
com23 _
com12 _