Theorem
3ad2antr2
Deduction adding conjuncts to antecedent. (Contributed by NM, 27-Dec-2007.)
Hypothesis
3ad2antl.1
\( \vdash \varphi \wedge \chi \rightarrow \theta \)
Conclusion
\( \vdash \varphi \wedge (\psi \wedge \chi \wedge \tau) \rightarrow \theta \)
Proof
3ad2antl.1
adantrl
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3adantr3
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