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Mirrors > Home > ILE Home > Th. List > nfsab | Unicode version |
Description: Bound-variable hypothesis builder for a class abstraction. (Contributed by Mario Carneiro, 11-Aug-2016.) |
Ref | Expression |
---|---|
nfsab.1 |
Ref | Expression |
---|---|
nfsab |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfsab.1 | . . . 4 | |
2 | 1 | nfri 1512 | . . 3 |
3 | 2 | hbab 2161 | . 2 |
4 | 3 | nfi 1455 | 1 |
Colors of variables: wff set class |
Syntax hints: wnf 1453 wcel 2141 cab 2156 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 |
This theorem depends on definitions: df-bi 116 df-nf 1454 df-sb 1756 df-clab 2157 |
This theorem is referenced by: nfab 2317 peano2 4577 |
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