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Mirrors > Home > ILE Home > Th. List > supeq3 | Unicode version |
Description: Equality theorem for supremum. (Contributed by Scott Fenton, 13-Jun-2018.) |
Ref | Expression |
---|---|
supeq3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | breq 3795 |
. . . . . . 7
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2 | 1 | notbid 625 |
. . . . . 6
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3 | 2 | ralbidv 2369 |
. . . . 5
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4 | breq 3795 |
. . . . . . 7
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5 | breq 3795 |
. . . . . . . 8
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6 | 5 | rexbidv 2370 |
. . . . . . 7
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7 | 4, 6 | imbi12d 232 |
. . . . . 6
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8 | 7 | ralbidv 2369 |
. . . . 5
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9 | 3, 8 | anbi12d 457 |
. . . 4
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10 | 9 | rabbidv 2594 |
. . 3
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11 | 10 | unieqd 3620 |
. 2
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12 | df-sup 6456 |
. 2
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13 | df-sup 6456 |
. 2
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14 | 11, 12, 13 | 3eqtr4g 2139 |
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 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2064 |
This theorem depends on definitions: df-bi 115 df-tru 1288 df-nf 1391 df-sb 1687 df-clab 2069 df-cleq 2075 df-clel 2078 df-nfc 2209 df-ral 2354 df-rex 2355 df-rab 2358 df-uni 3610 df-br 3794 df-sup 6456 |
This theorem is referenced by: infeq3 6487 |
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