| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: If a set of reals contains a lower bound, the lower bound is its infimum. |
| Ref | Expression |
|---|---|
| lbinfm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lble 6047 |
. . . . . . . 8
| |
| 2 | 1 | 3expa 833 |
. . . . . . 7
|
| 3 | lenltt 5510 |
. . . . . . . 8
| |
| 4 | lbcl 6046 |
. . . . . . . . . 10
| |
| 5 | ssel2 2064 |
. . . . . . . . . 10
| |
| 6 | 4, 5 | syldan 467 |
. . . . . . . . 9
|
| 7 | 6 | adantr 389 |
. . . . . . . 8
|
| 8 | ssel2 2064 |
. . . . . . . . 9
| |
| 9 | 8 | adantlr 393 |
. . . . . . . 8
|
| 10 | 3, 7, 9 | sylanc 471 |
. . . . . . 7
|
| 11 | 2, 10 | mpbid 195 |
. . . . . 6
|
| 12 | reex 5312 |
. . . . . . . . . . 11
| |
| 13 | 12 | ssex 2719 |
. . . . . . . . . 10
|
| 14 | rabexg 2724 |
. . . . . . . . . 10
| |
| 15 | 13, 14 | syl 10 |
. . . . . . . . 9
|
| 16 | uniexg 2871 |
. . . . . . . . 9
| |
| 17 | visset 1813 |
. . . . . . . . . 10
| |
| 18 | brcnvg 3297 |
. . . . . . . . . 10
| |
| 19 | 17, 18 | mpan2 696 |
. . . . . . . . 9
|
| 20 | 15, 16, 19 | 3syl 20 |
. . . . . . . 8
|
| 21 | 20 | negbid 611 |
. . . . . . 7
|
| 22 | 21 | ad2antrr 404 |
. . . . . 6
|
| 23 | 11, 22 | mpbird 196 |
. . . . 5
|
| 24 | 23 | r19.21aiva 1714 |
. . . 4
|
| 25 | 4 | a1d 12 |
. . . . . . . 8
|
| 26 | 25 | ancrd 299 |
. . . . . . 7
|
| 27 | breq2 2623 |
. . . . . . . 8
| |
| 28 | 27 | rcla4ev 1877 |
. . . . . . 7
|
| 29 | 26, 28 | syl6 22 |
. . . . . 6
|
| 30 | 29 | a1d 12 |
. . . . 5
|
| 31 | 30 | r19.21aiv 1713 |
. . . 4
|
| 32 | 24, 31 | jca 288 |
. . 3
|
| 33 | breq1 2622 |
. . . . . . . 8
| |
| 34 | 33 | negbid 611 |
. . . . . . 7
|
| 35 | 34 | ralbidv 1663 |
. . . . . 6
|
| 36 | breq2 2623 |
. . . . . . . 8
| |
| 37 | 36 | imbi1d 613 |
. . . . . . 7
|
| 38 | 37 | ralbidv 1663 |
. . . . . 6
|
| 39 | 35, 38 | anbi12d 628 |
. . . . 5
|
| 40 | 39 | reuuni2 2884 |
. . . 4
|
| 41 | ssel 2063 |
. . . . . 6
![]() |