ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  19.19 Structured version   Unicode version

Theorem 19.19 1553
Description: Theorem 19.19 of [Margaris] p. 90. (Contributed by NM, 12-Mar-1993.)
Hypothesis
Ref Expression
19.19.1  F/
Assertion
Ref Expression
19.19

Proof of Theorem 19.19
StepHypRef Expression
1 19.19.1 . . 3  F/
2119.9 1532 . 2
3 exbi 1492 . 2
42, 3syl5bbr 183 1
Colors of variables: wff set class
Syntax hints:   wi 4   wb 98  wal 1240   F/wnf 1346  wex 1378
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-5 1333  ax-gen 1335  ax-ie1 1379  ax-ie2 1380  ax-4 1397  ax-ial 1424
This theorem depends on definitions:  df-bi 110  df-nf 1347
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator