Theorem r19.26m 2987

Description: Version of 19.26 1680 and r19.26 2984 with restricted quantifiers ranging over different classes. (Contributed by NM, 22-Feb-2004.)

Assertion

Ref	Expression
r19.26m

Proof of Theorem r19.26m

Step	Hyp	Ref	Expression
1		19.26 1680	. 2
2		df-ral 2812	. . 3
3		df-ral 2812	. . 3
4	2, 3	anbi12i 697	. 2
5	1, 4	bitr4i 252	1

Syntax hints:  ->wi 4  <->wb 184  /\wa 369  A.wal 1393  e.wcel 1818  A.wral 2807

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-ral 2812