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Theorem simp-4l 547
Description: Simplification of a conjunction. (Contributed by Mario Carneiro, 4-Jan-2017.)
Assertion
Ref Expression
simp-4l (((((𝜑𝜓) ∧ 𝜒) ∧ 𝜃) ∧ 𝜏) → 𝜑)

Proof of Theorem simp-4l
StepHypRef Expression
1 simplll 539 . 2 ((((𝜑𝜓) ∧ 𝜒) ∧ 𝜃) → 𝜑)
21adantr 276 1 (((((𝜑𝜓) ∧ 𝜒) ∧ 𝜃) ∧ 𝜏) → 𝜑)
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4  wa 104
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108
This theorem is used by:  simp-5l  549  disjiun  4125  fnfi  7250  mapfi  7261  nninfisol  7473  swrdccatin1  11499  sumeq2  12127  zsumdc  12153  modfsummod  12227  prodeq2  12326  zproddc  12348  mulgval  13927  mplsubgfilemcl  15092  cncnp  15333  fsumcncntop  15670  dvmptfsum  15828  dvply2g  15869  logbgcd1irrap  16078  upgriswlkdc  16613  clwwlkccatlem  16653
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