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Mirrors > Home > ILE Home > Th. List > nfiota1 | Unicode version |
Description: Bound-variable hypothesis builder for the class. (Contributed by Andrew Salmon, 11-Jul-2011.) (Revised by Mario Carneiro, 15-Oct-2016.) |
Ref | Expression |
---|---|
nfiota1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfiota2 4888 | . 2 | |
2 | nfaba1 2224 | . . 3 | |
3 | 2 | nfuni 3607 | . 2 |
4 | 1, 3 | nfcxfr 2216 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 103 wal 1282 cab 2067 wnfc 2206 cuni 3601 cio 4885 |
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-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-rex 2354 df-sn 3404 df-uni 3602 df-iota 4887 |
This theorem is referenced by: iota2df 4911 sniota 4914 nfriota1 5495 erovlem 6221 |
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