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| Mirrors > Home > ILE Home > Th. List > supeq2 | Unicode version | ||
| Description: Equality theorem for supremum. (Contributed by Jeff Madsen, 2-Sep-2009.) |
| Ref | Expression |
|---|---|
| supeq2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rabeq 2755 |
. . . 4
| |
| 2 | raleq 2693 |
. . . . . 6
| |
| 3 | 2 | anbi2d 464 |
. . . . 5
|
| 4 | 3 | rabbidv 2752 |
. . . 4
|
| 5 | 1, 4 | eqtrd 2229 |
. . 3
|
| 6 | 5 | unieqd 3851 |
. 2
|
| 7 | df-sup 7059 |
. 2
| |
| 8 | df-sup 7059 |
. 2
| |
| 9 | 6, 7, 8 | 3eqtr4g 2254 |
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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 |
| This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-rab 2484 df-uni 3841 df-sup 7059 |
| This theorem is referenced by: infeq2 7089 |
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