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Mirrors > Home > ILE Home > Th. List > supubti | Unicode version |
Description: A supremum is an upper
bound. See also supclti 7000 and suplubti 7002.
This proof demonstrates how to expand an iota-based definition (df-iota 5180) using riotacl2 5847. (Contributed by Jim Kingdon, 24-Nov-2021.) |
Ref | Expression |
---|---|
supmoti.ti |
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supclti.2 |
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Ref | Expression |
---|---|
supubti |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 109 |
. . . . 5
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2 | 1 | a1i 9 |
. . . 4
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3 | 2 | ss2rabi 3239 |
. . 3
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4 | supmoti.ti |
. . . . 5
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5 | supclti.2 |
. . . . 5
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6 | 4, 5 | supval2ti 6997 |
. . . 4
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7 | 4, 5 | supeuti 6996 |
. . . . 5
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8 | riotacl2 5847 |
. . . . 5
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9 | 7, 8 | syl 14 |
. . . 4
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10 | 6, 9 | eqeltrd 2254 |
. . 3
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11 | 3, 10 | sselid 3155 |
. 2
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12 | breq2 4009 |
. . . . . . 7
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13 | 12 | notbid 667 |
. . . . . 6
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14 | 13 | cbvralv 2705 |
. . . . 5
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15 | breq1 4008 |
. . . . . . 7
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16 | 15 | notbid 667 |
. . . . . 6
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17 | 16 | ralbidv 2477 |
. . . . 5
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18 | 14, 17 | bitrid 192 |
. . . 4
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19 | 18 | elrab 2895 |
. . 3
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20 | 19 | simprbi 275 |
. 2
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21 | breq2 4009 |
. . . 4
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22 | 21 | notbid 667 |
. . 3
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23 | 22 | rspccv 2840 |
. 2
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24 | 11, 20, 23 | 3syl 17 |
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-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2741 df-sbc 2965 df-un 3135 df-in 3137 df-ss 3144 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-br 4006 df-iota 5180 df-riota 5834 df-sup 6986 |
This theorem is referenced by: suplub2ti 7003 supisoti 7012 inflbti 7026 suprubex 8911 zsupcl 11951 dvdslegcd 11968 |
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