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Mirrors > Home > ILE Home > Th. List > supeq123d | Unicode version |
Description: Equality deduction for supremum. (Contributed by Stefan O'Rear, 20-Jan-2015.) |
Ref | Expression |
---|---|
supeq123d.a |
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supeq123d.b |
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supeq123d.c |
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Ref | Expression |
---|---|
supeq123d |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | supeq123d.b |
. . . 4
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2 | supeq123d.a |
. . . . . 6
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3 | supeq123d.c |
. . . . . . . 8
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4 | 3 | breqd 4016 |
. . . . . . 7
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5 | 4 | notbid 667 |
. . . . . 6
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6 | 2, 5 | raleqbidv 2685 |
. . . . 5
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7 | 3 | breqd 4016 |
. . . . . . 7
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8 | 3 | breqd 4016 |
. . . . . . . 8
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9 | 2, 8 | rexeqbidv 2686 |
. . . . . . 7
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10 | 7, 9 | imbi12d 234 |
. . . . . 6
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11 | 1, 10 | raleqbidv 2685 |
. . . . 5
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12 | 6, 11 | anbi12d 473 |
. . . 4
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13 | 1, 12 | rabeqbidv 2734 |
. . 3
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14 | 13 | unieqd 3822 |
. 2
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15 | df-sup 6985 |
. 2
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16 | df-sup 6985 |
. 2
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17 | 14, 15, 16 | 3eqtr4g 2235 |
1
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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-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 |
This theorem depends on definitions: df-bi 117 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-rab 2464 df-uni 3812 df-br 4006 df-sup 6985 |
This theorem is referenced by: infeq123d 7017 |
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