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| Description: An upper bound is not less than the supremum. |
| Ref | Expression |
|---|---|
| supmo.1 |
|
| Ref | Expression |
|---|---|
| supnub |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | supmo.1 |
. . . . . . . 8
| |
| 2 | 1 | suplub 2161 |
. . . . . . 7
|
| 3 | 2 | exp3a 292 |
. . . . . 6
|
| 4 | 3 | imp 277 |
. . . . 5
|
| 5 | dfrex2 1212 |
. . . . 5
| |
| 6 | 4, 5 | syl6ib 185 |
. . . 4
|
| 7 | 6 | con2d 83 |
. . 3
|
| 8 | 7 | exp 291 |
. 2
|
| 9 | 8 | imp3a 279 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: supnubi 2167 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3or 582 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-reu 1207 df-rab 1208 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-po 2128 df-so 2138 df-sup 2154 |