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Theorem simp311 1339
Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012.)
Assertion
Ref Expression
simp311 ((𝜂𝜁 ∧ ((𝜑𝜓𝜒) ∧ 𝜃𝜏)) → 𝜑)

Proof of Theorem simp311
StepHypRef Expression
1 simp11 1222 . 2 (((𝜑𝜓𝜒) ∧ 𝜃𝜏) → 𝜑)
213ad2ant3 1153 1 ((𝜂𝜁 ∧ ((𝜑𝜓𝜒) ∧ 𝜃𝜏)) → 𝜑)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  w3a 1103
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This proof depends on definitions:  df-bi 210  df-an 402  df-3an 1105
This theorem is used by:  dalem-clpjq  40511  dath2  40611  cdleme26e  41233  cdleme38m  41337  cdleme38n  41338  cdleme39n  41340  cdlemg28b  41577  cdlemk7  41722  cdlemk11  41723  cdlemk12  41724  cdlemk7u  41744  cdlemk11u  41745  cdlemk12u  41746  cdlemk22  41767  cdlemk23-3  41776  cdlemk25-3  41778
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