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Mirrors > Home > ILE Home > Th. List > iunab | Unicode version |
Description: The indexed union of a class abstraction. (Contributed by NM, 27-Dec-2004.) |
Ref | Expression |
---|---|
iunab |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfcv 2279 | . . . 4 | |
2 | nfab1 2281 | . . . 4 | |
3 | 1, 2 | nfiunxy 3834 | . . 3 |
4 | nfab1 2281 | . . 3 | |
5 | 3, 4 | cleqf 2303 | . 2 |
6 | abid 2125 | . . . 4 | |
7 | 6 | rexbii 2440 | . . 3 |
8 | eliun 3812 | . . 3 | |
9 | abid 2125 | . . 3 | |
10 | 7, 8, 9 | 3bitr4i 211 | . 2 |
11 | 5, 10 | mpgbir 1429 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wceq 1331 wcel 1480 cab 2123 wrex 2415 ciun 3808 |
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 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-v 2683 df-iun 3810 |
This theorem is referenced by: iunrab 3855 iunid 3863 dfimafn2 5464 |
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