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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 3815 | . 2 | |
2 | dfiun2.1 | . . 3 | |
3 | 2 | a1i 9 | . 2 |
4 | 1, 3 | mprg 2466 | 1 |
Colors of variables: wff set class |
Syntax hints: wceq 1316 wcel 1465 cab 2103 wrex 2394 cvv 2660 cuni 3706 ciun 3783 |
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 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 |
This theorem depends on definitions: df-bi 116 df-tru 1319 df-nf 1422 df-sb 1721 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-ral 2398 df-rex 2399 df-v 2662 df-uni 3707 df-iun 3785 |
This theorem is referenced by: funcnvuni 5162 fun11iun 5356 tfrlem8 6183 |
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