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Mirrors > Home > MPE Home > Th. List > supeq3 | Structured version Visualization version 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 4655 |
. . . . . . 7
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2 | 1 | notbid 308 |
. . . . . 6
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3 | 2 | ralbidv 2986 |
. . . . 5
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4 | breq 4655 |
. . . . . . 7
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5 | breq 4655 |
. . . . . . . 8
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6 | 5 | rexbidv 3052 |
. . . . . . 7
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7 | 4, 6 | imbi12d 334 |
. . . . . 6
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8 | 7 | ralbidv 2986 |
. . . . 5
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9 | 3, 8 | anbi12d 747 |
. . . 4
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10 | 9 | rabbidv 3189 |
. . 3
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11 | 10 | unieqd 4446 |
. 2
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12 | df-sup 8348 |
. 2
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13 | df-sup 8348 |
. 2
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14 | 11, 12, 13 | 3eqtr4g 2681 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-uni 4437 df-br 4654 df-sup 8348 |
This theorem is referenced by: infeq3 8386 |
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