Theorem rexanaliOLD 2962

Description: Obsolete proof of rexanali 2910 as of 27-Dec-2019. (Contributed by NM, 4-Sep-2005.) (Proof modification is discouraged.) (New usage is discouraged.)

Assertion

Ref	Expression
rexanaliOLD

Proof of Theorem rexanaliOLD

Step	Hyp	Ref	Expression
1		annim 425	. . 3
2	1	rexbii 2959	. 2
3		rexnal 2905	. 2
4	2, 3	bitri 249	1

Syntax hints:  -.wn 3  ->wi 4  <->wb 184  /\wa 369  A.wral 2807  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

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