Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > 19.21-2 | Unicode version |
Description: Theorem 19.21 of [Margaris] p. 90 but with 2 quantifiers. (Contributed by NM, 4-Feb-2005.) |
Ref | Expression |
---|---|
19.21-2.1 | |
19.21-2.2 |
Ref | Expression |
---|---|
19.21-2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 19.21-2.2 | . . . 4 | |
2 | 1 | 19.21 1515 | . . 3 |
3 | 2 | albii 1399 | . 2 |
4 | 19.21-2.1 | . . 3 | |
5 | 4 | 19.21 1515 | . 2 |
6 | 3, 5 | bitri 182 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 103 wal 1282 wnf 1389 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-4 1440 ax-ial 1467 ax-i5r 1468 |
This theorem depends on definitions: df-bi 115 df-nf 1390 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |