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

Step	Hyp	Ref	Expression
1		nfa1 1897	. 2
2		nfa1 1897	. 2
3	1, 2	nfim 1920	1

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