Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > nf3 | Unicode version |
Description: An alternate definition of df-nf 1390. (Contributed by Mario Carneiro, 24-Sep-2016.) |
Ref | Expression |
---|---|
nf3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nf2 1598 | . 2 | |
2 | nfe1 1425 | . . . 4 | |
3 | 2 | nfri 1452 | . . 3 |
4 | 3 | 19.21h 1489 | . 2 |
5 | 1, 4 | bitr4i 185 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 103 wal 1282 wnf 1389 wex 1421 |
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-ie1 1422 ax-ie2 1423 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: eusv2nf 4206 |
Copyright terms: Public domain | W3C validator |