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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 2525 |
. . . . . 6
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2 | rsp 2541 |
. . . . . . . 8
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3 | clel3g 2894 |
. . . . . . . 8
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4 | 2, 3 | syl6 33 |
. . . . . . 7
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5 | 4 | imp 124 |
. . . . . 6
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6 | 1, 5 | rexbida 2489 |
. . . . 5
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7 | rexcom4 2783 |
. . . . 5
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8 | 6, 7 | bitrdi 196 |
. . . 4
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9 | r19.41v 2650 |
. . . . . 6
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10 | 9 | exbii 1616 |
. . . . 5
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11 | exancom 1619 |
. . . . 5
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12 | 10, 11 | bitri 184 |
. . . 4
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13 | 8, 12 | bitrdi 196 |
. . 3
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14 | eliun 3916 |
. . 3
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15 | eluniab 3847 |
. . 3
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16 | 13, 14, 15 | 3bitr4g 223 |
. 2
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17 | 16 | eqrdv 2191 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 |
This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-v 2762 df-uni 3836 df-iun 3914 |
This theorem is referenced by: dfiun2 3946 abnexg 4477 dfiun3g 4919 fniunfv 5805 iunexg 6171 uniqs 6647 ptex 12875 iunopn 14170 |
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