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Mirrors > Home > ILE Home > Th. List > dfiun2g | Unicode version |
Description: Alternate definition of
indexed union when ![]() |
Ref | Expression |
---|---|
dfiun2g |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfra1 2410 |
. . . . . 6
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2 | rsp 2424 |
. . . . . . . 8
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3 | clel3g 2752 |
. . . . . . . 8
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4 | 2, 3 | syl6 33 |
. . . . . . 7
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5 | 4 | imp 123 |
. . . . . 6
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6 | 1, 5 | rexbida 2376 |
. . . . 5
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7 | rexcom4 2643 |
. . . . 5
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8 | 6, 7 | syl6bb 195 |
. . . 4
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9 | r19.41v 2524 |
. . . . . 6
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10 | 9 | exbii 1542 |
. . . . 5
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11 | exancom 1545 |
. . . . 5
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12 | 10, 11 | bitri 183 |
. . . 4
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13 | 8, 12 | syl6bb 195 |
. . 3
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14 | eliun 3740 |
. . 3
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15 | eluniab 3671 |
. . 3
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16 | 13, 14, 15 | 3bitr4g 222 |
. 2
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17 | 16 | eqrdv 2087 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 666 ax-5 1382 ax-7 1383 ax-gen 1384 ax-ie1 1428 ax-ie2 1429 ax-8 1441 ax-10 1442 ax-11 1443 ax-i12 1444 ax-bndl 1445 ax-4 1446 ax-17 1465 ax-i9 1469 ax-ial 1473 ax-i5r 1474 ax-ext 2071 |
This theorem depends on definitions: df-bi 116 df-tru 1293 df-nf 1396 df-sb 1694 df-clab 2076 df-cleq 2082 df-clel 2085 df-nfc 2218 df-ral 2365 df-rex 2366 df-v 2622 df-uni 3660 df-iun 3738 |
This theorem is referenced by: dfiun2 3770 abnexg 4281 dfiun3g 4703 fniunfv 5555 iunexg 5904 uniqs 6364 iunopn 11762 |
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