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| Description: A class belongs to omega iff its successor does. |
| Ref | Expression |
|---|---|
| peano2b |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | limom 3203 |
. 2
| |
| 2 | limsuc 3177 |
. 2
| |
| 3 | 1, 2 | ax-mp 7 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: nnsuc 3205 peano2 3207 peano5 3210 frsuc 4011 nnacom 4291 nnmsucr 4298 omsmolem 4314 php 4578 php4 4581 omsucdom 4587 unblem1 4603 isfinite2 4609 inf0 4668 inf3lem1 4675 inf3lem5 4679 sucdom 4907 indpi 5099 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1003 ax-gen 1004 ax-8 1005 ax-10 1007 ax-11 1008 ax-12 1009 ax-13 1010 ax-14 1011 ax-17 1012 ax-4 1014 ax-5o 1016 ax-6o 1019 ax-9o 1164 ax-10o 1182 ax-16 1252 ax-11o 1260 ax-ext 1504 ax-sep 2758 ax-nul 2765 ax-pow 2798 ax-pr 2835 ax-un 2922 |
| This theorem depends on definitions: df-bi 154 df-or 231 df-an 232 df-3or 788 df-3an 789 df-ex 1022 df-sb 1214 df-eu 1424 df-mo 1425 df-clab 1510 df-cleq 1515 df-clel 1518 df-ne 1634 df-ral 1696 df-rex 1697 df-v 1859 df-dif 2100 df-un 2101 df-in 2102 df-ss 2104 df-nul 2332 df-if 2414 df-pw 2454 df-sn 2464 df-pr 2465 df-tp 2467 df-op 2468 df-uni 2558 df-br 2675 df-opab 2722 df-tr 2736 df-eprel 2888 df-po 2896 df-so 2906 df-fr 2974 df-we 2991 df-ord 3008 df-on 3009 df-lim 3010 df-suc 3011 df-om 3189 |