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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 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | unab 3476 |
. . 3
| |
| 2 | 19.43 1677 |
. . . . 5
| |
| 3 | andi 826 |
. . . . . . . 8
| |
| 4 | 3 | exbii 1654 |
. . . . . . 7
|
| 5 | 19.43 1677 |
. . . . . . 7
| |
| 6 | 4, 5 | bitr2i 185 |
. . . . . 6
|
| 7 | 6 | exbii 1654 |
. . . . 5
|
| 8 | 2, 7 | bitr3i 186 |
. . . 4
|
| 9 | 8 | abbii 2347 |
. . 3
|
| 10 | 1, 9 | eqtri 2252 |
. 2
|
| 11 | df-opab 4156 |
. . 3
| |
| 12 | df-opab 4156 |
. . 3
| |
| 13 | 11, 12 | uneq12i 3361 |
. 2
|
| 14 | df-opab 4156 |
. 2
| |
| 15 | 10, 13, 14 | 3eqtr4i 2262 |
1
|
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-v 2805 df-un 3205 df-opab 4156 |
| This theorem is referenced by: xpundi 4788 xpundir 4789 cnvun 5149 coundi 5245 coundir 5246 mptun 5471 lgsquadlem3 15881 |
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