Theorem reximdvaiOLD 2930

Description: Obsolete proof of reximdvai 2929 as of 8-Jan-2020. (Contributed by NM, 14-Nov-2002.) (Proof modification is discouraged.) (New usage is discouraged.)

Hypothesis

Ref	Expression
reximdvai.1

Assertion

Ref	Expression
reximdvaiOLD

Distinct variable group:   ,

Proof of Theorem reximdvaiOLD

Step	Hyp	Ref	Expression
1		nfv 1707	. 2
2		reximdvai.1	. 2
3	1, 2	reximdai 2926	1

Syntax hints:  ->wi 4  e.wcel 1818  E.wrex 2808

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-12 1854

This theorem depends on definitions:  df-bi 185  df-an 371  df-ex 1613  df-nf 1617  df-ral 2812  df-rex 2813