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| Mirrors > Home > ILE Home > Th. List > suplubti | Unicode version | ||
| Description: A supremum is the least upper bound. See also supclti 7328 and supubti 7329. (Contributed by Jim Kingdon, 24-Nov-2021.) |
| Ref | Expression |
|---|---|
| supmoti.ti |
|
| supclti.2 |
|
| Ref | Expression |
|---|---|
| suplubti |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpr 110 |
. . . . . 6
| |
| 2 | breq1 4128 |
. . . . . . . 8
| |
| 3 | breq1 4128 |
. . . . . . . . 9
| |
| 4 | 3 | rexbidv 2551 |
. . . . . . . 8
|
| 5 | 2, 4 | imbi12d 234 |
. . . . . . 7
|
| 6 | 5 | cbvralv 2786 |
. . . . . 6
|
| 7 | 1, 6 | sylib 122 |
. . . . 5
|
| 8 | 7 | a1i 9 |
. . . 4
|
| 9 | 8 | ss2rabi 3330 |
. . 3
|
| 10 | supmoti.ti |
. . . . 5
| |
| 11 | supclti.2 |
. . . . 5
| |
| 12 | 10, 11 | supval2ti 7325 |
. . . 4
|
| 13 | 10, 11 | supeuti 7324 |
. . . . 5
|
| 14 | riotacl2 6043 |
. . . . 5
| |
| 15 | 13, 14 | syl 14 |
. . . 4
|
| 16 | 12, 15 | eqeltrd 2315 |
. . 3
|
| 17 | 9, 16 | sselid 3246 |
. 2
|
| 18 | breq2 4129 |
. . . . . 6
| |
| 19 | 18 | imbi1d 231 |
. . . . 5
|
| 20 | 19 | ralbidv 2550 |
. . . 4
|
| 21 | 20 | elrab 2982 |
. . 3
|
| 22 | 21 | simprbi 275 |
. 2
|
| 23 | breq1 4128 |
. . . . 5
| |
| 24 | breq1 4128 |
. . . . . 6
| |
| 25 | 24 | rexbidv 2551 |
. . . . 5
|
| 26 | 23, 25 | imbi12d 234 |
. . . 4
|
| 27 | 26 | rspccv 2926 |
. . 3
|
| 28 | 27 | impd 254 |
. 2
|
| 29 | 17, 22, 28 | 3syl 17 |
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-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-un 3224 df-in 3226 df-ss 3233 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-iota 5332 df-riota 6028 df-sup 7314 |
| This theorem is referenced by: suplub2ti 7331 supisoti 7340 infglbti 7355 sup3exmid 9277 maxleast 11957 |
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