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Mirrors > Home > ILE Home > Th. List > unopab | Unicode version |
Description: Union of two ordered pair class abstractions. (Contributed by NM, 30-Sep-2002.) |
Ref | Expression |
---|---|
unopab |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | unab 3309 |
. . 3
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2 | 19.43 1590 |
. . . . 5
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3 | andi 790 |
. . . . . . . 8
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4 | 3 | exbii 1567 |
. . . . . . 7
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5 | 19.43 1590 |
. . . . . . 7
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6 | 4, 5 | bitr2i 184 |
. . . . . 6
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7 | 6 | exbii 1567 |
. . . . 5
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8 | 2, 7 | bitr3i 185 |
. . . 4
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9 | 8 | abbii 2230 |
. . 3
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10 | 1, 9 | eqtri 2135 |
. 2
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11 | df-opab 3950 |
. . 3
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12 | df-opab 3950 |
. . 3
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13 | 11, 12 | uneq12i 3194 |
. 2
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14 | df-opab 3950 |
. 2
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15 | 10, 13, 14 | 3eqtr4i 2145 |
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 681 ax-5 1406 ax-7 1407 ax-gen 1408 ax-ie1 1452 ax-ie2 1453 ax-8 1465 ax-10 1466 ax-11 1467 ax-i12 1468 ax-bndl 1469 ax-4 1470 ax-17 1489 ax-i9 1493 ax-ial 1497 ax-i5r 1498 ax-ext 2097 |
This theorem depends on definitions: df-bi 116 df-tru 1317 df-nf 1420 df-sb 1719 df-clab 2102 df-cleq 2108 df-clel 2111 df-nfc 2244 df-v 2659 df-un 3041 df-opab 3950 |
This theorem is referenced by: xpundi 4555 xpundir 4556 cnvun 4902 coundi 4998 coundir 4999 mptun 5212 |
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