Theorem 19.2g 1868

Description: Theorem 19.2 of [Margaris] p. 89, generalized to use two setvar variables. Use 19.2 1751 when sufficient. (Contributed by Mel L. O'Cat, 31-Mar-2008.)

Assertion

Ref	Expression
19.2g

Proof of Theorem 19.2g

Step	Hyp	Ref	Expression
1		19.8a 1857	. 2
2	1	sps 1865	1

Syntax hints:  ->wi 4  A.wal 1393  E.wex 1612

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-ex 1613