| Metamath Proof Explorer |
< Previous
Next >
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 3109 |
. . 3
| |
| 2 | suceq 3024 |
. . . . . 6
| |
| 3 | 2 | eleq1d 1532 |
. . . . 5
|
| 4 | 3 | rcla4cv 1865 |
. . . 4
|
| 5 | 4 | 3ad2ant3 800 |
. . 3
|
| 6 | 1, 5 | sylbi 199 |
. 2
|
| 7 | limord 3018 |
. . 3
| |
| 8 | ordtr 2952 |
. . 3
| |
| 9 | trsuc 3045 |
. . . 4
| |
| 10 | 9 | ex 373 |
. . 3
|
| 11 | 7, 8, 10 | 3syl 20 |
. 2
|
| 12 | 6, 11 | impbid 514 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: limsssuc 3111 limuni3 3113 peano2b 3137 oaordi 4164 oarec 4180 omordi 4181 oeordi 4198 oelim2 4206 limenpsi 4485 r1ord 4627 ranklim 4657 r1pwcl 4659 rankxplim3 4686 alephordi 4846 cflim 4881 |
| 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-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-sep 2693 ax-nul 2700 ax-pow 2732 ax-pr 2769 ax-un 2857 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 774 df-3an 775 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-rex 1642 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-if 2352 df-pw 2392 df-sn 2402 df-pr 2403 df-tp 2405 df-op 2406 df-uni 2494 df-br 2610 df-opab 2657 df-tr 2671 df-eprel 2821 df-po 2831 df-so 2841 df-fr 2907 df-we 2924 df-ord 2941 df-on 2942 df-lim 2943 df-suc 2944 |