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Mirrors > Home > ILE Home > Th. List > dfiun2 | Unicode version |
Description: Alternate definition of indexed union when is a set. Definition 15(a) of [Suppes] p. 44. (Contributed by NM, 27-Jun-1998.) (Revised by David Abernethy, 19-Jun-2012.) |
Ref | Expression |
---|---|
dfiun2.1 |
Ref | Expression |
---|---|
dfiun2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfiun2g 3881 | . 2 | |
2 | dfiun2.1 | . . 3 | |
3 | 2 | a1i 9 | . 2 |
4 | 1, 3 | mprg 2514 | 1 |
Colors of variables: wff set class |
Syntax hints: wceq 1335 wcel 2128 cab 2143 wrex 2436 cvv 2712 cuni 3772 ciun 3849 |
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 699 ax-5 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2139 |
This theorem depends on definitions: df-bi 116 df-tru 1338 df-nf 1441 df-sb 1743 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-ral 2440 df-rex 2441 df-v 2714 df-uni 3773 df-iun 3851 |
This theorem is referenced by: funcnvuni 5239 fun11iun 5435 tfrlem8 6265 |
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