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| Mirrors > Home > ILE Home > Th. List > suplubti | Unicode version | ||
| Description: A supremum is the least upper bound. See also supclti 7165 and supubti 7166. (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 4086 |
. . . . . . . 8
| |
| 3 | breq1 4086 |
. . . . . . . . 9
| |
| 4 | 3 | rexbidv 2531 |
. . . . . . . 8
|
| 5 | 2, 4 | imbi12d 234 |
. . . . . . 7
|
| 6 | 5 | cbvralv 2765 |
. . . . . 6
|
| 7 | 1, 6 | sylib 122 |
. . . . 5
|
| 8 | 7 | a1i 9 |
. . . 4
|
| 9 | 8 | ss2rabi 3306 |
. . 3
|
| 10 | supmoti.ti |
. . . . 5
| |
| 11 | supclti.2 |
. . . . 5
| |
| 12 | 10, 11 | supval2ti 7162 |
. . . 4
|
| 13 | 10, 11 | supeuti 7161 |
. . . . 5
|
| 14 | riotacl2 5969 |
. . . . 5
| |
| 15 | 13, 14 | syl 14 |
. . . 4
|
| 16 | 12, 15 | eqeltrd 2306 |
. . 3
|
| 17 | 9, 16 | sselid 3222 |
. 2
|
| 18 | breq2 4087 |
. . . . . 6
| |
| 19 | 18 | imbi1d 231 |
. . . . 5
|
| 20 | 19 | ralbidv 2530 |
. . . 4
|
| 21 | 20 | elrab 2959 |
. . 3
|
| 22 | 21 | simprbi 275 |
. 2
|
| 23 | breq1 4086 |
. . . . 5
| |
| 24 | breq1 4086 |
. . . . . 6
| |
| 25 | 24 | rexbidv 2531 |
. . . . 5
|
| 26 | 23, 25 | imbi12d 234 |
. . . 4
|
| 27 | 26 | rspccv 2904 |
. . 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2801 df-sbc 3029 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-iota 5278 df-riota 5954 df-sup 7151 |
| This theorem is referenced by: suplub2ti 7168 supisoti 7177 infglbti 7192 sup3exmid 9104 maxleast 11724 |
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