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Theorem nfia1 1954
Description: Lemma 23 of [Monk2] p. 114. (Contributed by Mario Carneiro, 24-Sep-2016.)
Assertion
Ref Expression
nfia1

Proof of Theorem nfia1
StepHypRef Expression
1 nfa1 1897 . 2
2 nfa1 1897 . 2
31, 2nfim 1920 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  A.wal 1393  F/wnf 1616
This theorem is referenced by:  mo2v  2289  mo2vOLD  2290  mo2vOLDOLD  2291  2eu6  2383
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631  ax-5 1704  ax-6 1747  ax-7 1790  ax-10 1837  ax-12 1854
This theorem depends on definitions:  df-bi 185  df-ex 1613  df-nf 1617
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