Theorem
mp4an
An inference based on modus ponens. (Contributed by Jeff Madsen, 15-Jun-2010.)
Hypotheses
mp4an.1
\( \vdash \varphi \)
mp4an.2
\( \vdash \psi \)
mp4an.3
\( \vdash \chi \)
mp4an.4
\( \vdash \theta \)
mp4an.5
\( \vdash \varphi \wedge \psi \wedge (\chi \wedge \theta) \rightarrow \tau \)
Conclusion
\( \vdash \tau \)
Proof
l0
mp4an.1
mp4an.2
l2
pm3.2i
l0
_
\( \vdash \varphi \wedge \psi \)
l3
mp4an.3
mp4an.4
l5
pm3.2i
l3
_
\( \vdash \chi \wedge \theta \)
mp4an.5
\( \vdash \varphi \wedge \psi \wedge (\chi \wedge \theta) \rightarrow \tau \)
mp2an
l2
l5
_
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