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| Description: A successor is not a limit ordinal. |
| Ref | Expression |
|---|---|
| nlimsucgOLD |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ordsuc 3895 |
. . . . . . 7
| |
| 2 | ordirr 3676 |
. . . . . . 7
| |
| 3 | 1, 2 | sylbi 216 |
. . . . . 6
|
| 4 | 3 | adantl 424 |
. . . . 5
|
| 5 | eleq1 1957 |
. . . . . . 7
| |
| 6 | simpr 350 |
. . . . . . . 8
| |
| 7 | sucidg 3743 |
. . . . . . . . 9
| |
| 8 | 7 | adantr 425 |
. . . . . . . 8
|
| 9 | 6, 8 | eqeltrd 1971 |
. . . . . . 7
|
| 10 | 5, 9 | syl5cbir 228 |
. . . . . 6
|
| 11 | ordunisuc 3911 |
. . . . . 6
| |
| 12 | 10, 11 | sylan2 500 |
. . . . 5
|
| 13 | 4, 12 | mtod 123 |
. . . 4
|
| 14 | 13 | ex 402 |
. . 3
|
| 15 | limuni 3724 |
. . . 4
| |
| 16 | 15 | a1i 8 |
. . 3
|
| 17 | 14, 16 | nsyld 132 |
. 2
|
| 18 | simp1 876 |
. . . 4
| |
| 19 | df-lim 3662 |
. . . 4
| |
| 20 | 18, 19, 1 | 3imtr4i 236 |
. . 3
|
| 21 | 20 | con3i 114 |
. 2
|
| 22 | 17, 21 | pm2.61d1 142 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-13 1311 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3or 859 df-3an 860 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-ral 2109 df-rex 2110 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-pss 2607 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-tp 3052 df-op 3053 df-uni 3178 df-br 3339 df-opab 3396 df-tr 3412 df-eprel 3583 df-po 3591 df-so 3604 df-fr 3625 df-we 3644 df-ord 3660 df-on 3661 df-lim 3662 df-suc 3663 |