Theorem
expdimp
A deduction version of exportation, followed by importation. (Contributed by NM, 6-Sep-2008.)
Hypothesis
expdimp.1
\( \vdash \varphi \rightarrow \psi \wedge \chi \rightarrow \theta \)
Conclusion
\( \vdash \varphi \wedge \psi \rightarrow \chi \rightarrow \theta \)
Proof
expdimp.1
expd
_
imp
_
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