| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 3474 |
. . 3
| |
| 2 | 19.43 1676 |
. . . . 5
| |
| 3 | andi 825 |
. . . . . . . 8
| |
| 4 | 3 | exbii 1653 |
. . . . . . 7
|
| 5 | 19.43 1676 |
. . . . . . 7
| |
| 6 | 4, 5 | bitr2i 185 |
. . . . . 6
|
| 7 | 6 | exbii 1653 |
. . . . 5
|
| 8 | 2, 7 | bitr3i 186 |
. . . 4
|
| 9 | 8 | abbii 2347 |
. . 3
|
| 10 | 1, 9 | eqtri 2252 |
. 2
|
| 11 | df-opab 4151 |
. . 3
| |
| 12 | df-opab 4151 |
. . 3
| |
| 13 | 11, 12 | uneq12i 3359 |
. 2
|
| 14 | df-opab 4151 |
. 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-v 2804 df-un 3204 df-opab 4151 |
| This theorem is referenced by: xpundi 4782 xpundir 4783 cnvun 5142 coundi 5238 coundir 5239 mptun 5464 lgsquadlem3 15807 |
| Copyright terms: Public domain | W3C validator |