| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: Any subset of extended reals has a supremum. |
| Ref | Expression |
|---|---|
| xrsupss |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssxr 5513 |
. . 3
| |
| 2 | df-3or 774 |
. . 3
| |
| 3 | 1, 2 | sylib 198 |
. 2
|
| 4 | xrsupsslem 6023 |
. . 3
| |
| 5 | ssdifss 2158 |
. . . . . 6
| |
| 6 | ssxr 5513 |
. . . . . . . 8
| |
| 7 | orcom 246 |
. . . . . . . . 9
| |
| 8 | df-3or 774 |
. . . . . . . . 9
| |
| 9 | mnfxr 5466 |
. . . . . . . . . . . . 13
| |
| 10 | 9 | elisseti 1809 |
. . . . . . . . . . . 12
|
| 11 | 10 | snid 2425 |
. . . . . . . . . . 11
|
| 12 | elndif 2154 |
. . . . . . . . . . 11
| |
| 13 | 11, 12 | ax-mp 7 |
. . . . . . . . . 10
|
| 14 | biorf 733 |
. . . . . . . . . 10
| |
| 15 | 13, 14 | ax-mp 7 |
. . . . . . . . 9
|
| 16 | 7, 8, 15 | 3bitr4 183 |
. . . . . . . 8
|
| 17 | 6, 16 | sylib 198 |
. . . . . . 7
|
| 18 | xrsupsslem 6023 |
. . . . . . 7
| |
| 19 | 17, 18 | mpdan 702 |
. . . . . 6
|
| 20 | 5, 19 | syl 10 |
. . . . 5
|
| 21 | 20 | adantr 389 |
. . . 4
|
| 22 | 10 | snss 2452 |
. . . . . . . . 9
|
| 23 | undif 2333 |
. . . . . . . . 9
| |
| 24 | uncom 2166 |
. . . . . . . . . 10
| |
| 25 | 24 | eqeq1i 1474 |
. . . . . . . . 9
|
| 26 | 22, 23, 25 | 3bitr 177 |
. . . . . . . 8
|
| 27 | raleq1 1778 |
. . . . . . . . 9
| |
| 28 | rexeq1 1779 |
. . . . . . . . . . 11
| |
| 29 | 28 | imbi2d 610 |
. . . . . . . . . 10
|
| 30 | 29 | ralbidv 1655 |
. . . . . . . . 9
|
| 31 | 27, 30 | anbi12d 626 |
. . . . . . . 8
|
| 32 | 26, 31 | sylbi 199 |
. . . . . . 7
|
| 33 | 32 | rexbidv 1656 |
. . . . . 6
|
| 34 | xrsupexmnf 6021 |
. . . . . 6
| |
| 35 | 33, 34 | syl5bi 208 |
. . . . 5
|
| 36 | 35 | adantl 388 |
. . . 4
|
| 37 | 21, 36 | mpd 26 |
. . 3
|
| 38 | 4, 37 | jaodan 426 |
. 2
|
| 39 | 3, 38 | mpdan 702 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: supxr 6028 supxrcl 6031 supxrun 6032 supxrunb1 6036 supxrunb2 6037 supxrub 6045 supxrleub 6046 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-9 962 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-rep 2683 ax-sep 2693 ax-nul 2700 ax-pow 2732 ax-pr 2769 ax-un 2857 ax-inf2 4597 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 774 df-3an 775 df-ex |