Theorem
3expib
Exportation from triple conjunction. (Contributed by NM, 19-May-2007.)
Hypothesis
3exp.1
\( \vdash \varphi \wedge \psi \wedge \chi \rightarrow \theta \)
Conclusion
\( \vdash \varphi \rightarrow \psi \wedge \chi \rightarrow \theta \)
Proof
3exp.1
3exp
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impd
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