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Theorem simp121 1087
Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012.)
Ref Expression
simp121 (((θ (φ ψ χ) τ) η ζ) → φ)

Proof of Theorem simp121
StepHypRef Expression
1 simp21 988 . 2 ((θ (φ ψ χ) τ) → φ)
213ad2ant1 976 1 (((θ (φ ψ χ) τ) η ζ) → φ)
Colors of variables: wff setvar class
Syntax hints:  wi 4   w3a 934
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8
This theorem depends on definitions:  df-bi 177  df-an 360  df-3an 936
This theorem is referenced by: (None)
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