Theorem 3an1rs

Swap conjuncts. (Contributed by NM, 16-Dec-2007.) (Proof shortened by Wolf Lammen, 14-Apr-2022.)

Hypothesis
3an1rs.1
\( \vdash (\varphi \wedge \psi \wedge \chi) \wedge \theta \rightarrow \tau \)
Conclusion
\( \vdash (\varphi \wedge \psi \wedge \theta) \wedge \chi \rightarrow \tau \)
Proof
3an1rs.1
3exp1 _
com34 _
3imp1 _