NFE Home New Foundations Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  NFE Home  >  Th. List  >  19.2g GIF version

Theorem 19.2g 1757
Description: Theorem 19.2 of [Margaris] p. 89, generalized to use two setvar variables. (Contributed by O'Cat, 31-Mar-2008.)
Assertion
Ref Expression
19.2g (xφyφ)

Proof of Theorem 19.2g
StepHypRef Expression
1 19.8a 1756 . 2 (φyφ)
21sps 1754 1 (xφyφ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wal 1540  wex 1541
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-11 1746
This theorem depends on definitions:  df-bi 177  df-ex 1542
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator