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Related theorems Unicode version |
| Description: The successor of a member of a limit ordinal is also a member. |
| Ref | Expression |
|---|---|
| limsuc |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dflim4 3202 |
. . 3
| |
| 2 | suceq 3038 |
. . . . . 6
| |
| 3 | 2 | eleq1d 1583 |
. . . . 5
|
| 4 | 3 | rcla4cv 1920 |
. . . 4
|
| 5 | 4 | 3ad2ant3 808 |
. . 3
|
| 6 | 1, 5 | sylbi 197 |
. 2
|
| 7 | limord 3032 |
. . 3
| |
| 8 | ordtr 2989 |
. . 3
| |
| 9 | trsuc 3056 |
. . . 4
| |
| 10 | 9 | ex 371 |
. . 3
|
| 11 | 7, 8, 10 | 3syl 20 |
. 2
|
| 12 | 6, 11 | impbid 519 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: limsssuc 3204 limuni3 3206 peano2b 3234 oaordi 4316 oarec 4332 omordi 4333 oeordi 4350 oelim2 4358 limenpsi 4652 r1ord 4801 ranklim 4831 r1pwcl 4833 rankxplim3 4860 alephordi 5024 cflim 5059 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 998 ax-gen 999 ax-8 1000 ax-10 1002 ax-11 1003 ax-12 1004 ax-13 1005 ax-14 1006 ax-17 1007 ax-4 1009 ax-5o 1011 ax-6o 1014 ax-9o 1159 ax-10o 1177 ax-16 1247 ax-11o 1255 ax-ext 1500 ax-sep 2777 ax-nul 2784 ax-pow 2818 ax-pr 2855 ax-un 3089 |
| This theorem depends on definitions: df-bi 145 df-or 222 df-an 223 df-3or 782 df-3an 783 df-ex 1017 df-sb 1209 df-eu 1421 df-mo 1422 df-clab 1506 df-cleq 1511 df-clel 1514 df-ne 1630 df-ral 1695 df-rex 1696 df-v 1858 df-dif 2101 df-un 2102 df-in 2103 df-ss 2105 df-nul 2333 df-if 2416 df-pw 2459 df-sn 2470 df-pr 2471 df-tp 2473 df-op 2474 df-uni 2570 df-br 2693 df-opab 2741 df-tr 2755 df-eprel 2910 df-po 2918 df-so 2929 df-fr 2947 df-we 2962 df-ord 2978 df-on 2979 df-lim 2980 df-suc 2981 |