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Theorem simp33 1020
Description: Simplification of doubly triple conjunction. (Contributed by NM, 17-Nov-2011.)
Assertion
Ref Expression
simp33 ((𝜑𝜓 ∧ (𝜒𝜃𝜏)) → 𝜏)

Proof of Theorem simp33
StepHypRef Expression
1 simp3 984 . 2 ((𝜒𝜃𝜏) → 𝜏)
213ad2ant3 1005 1 ((𝜑𝜓 ∧ (𝜒𝜃𝜏)) → 𝜏)
Colors of variables: wff set class
Syntax hints:  wi 4  w3a 963
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107
This theorem depends on definitions:  df-bi 116  df-3an 965
This theorem is referenced by:  simpl33  1065  simpr33  1074  simp133  1119  simp233  1128  simp333  1137
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