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| Mirrors > Home > ILE Home > Th. List > nnon | Unicode version | ||
| Description: A natural number is an ordinal number. (Contributed by NM, 27-Jun-1994.) |
| Ref | Expression |
|---|---|
| nnon |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | omelon 4675 |
. 2
| |
| 2 | 1 | oneli 4493 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-sep 4178 ax-nul 4186 ax-pow 4234 ax-pr 4269 ax-un 4498 ax-iinf 4654 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ral 2491 df-rex 2492 df-v 2778 df-dif 3176 df-un 3178 df-in 3180 df-ss 3187 df-nul 3469 df-pw 3628 df-sn 3649 df-pr 3650 df-uni 3865 df-int 3900 df-tr 4159 df-iord 4431 df-on 4433 df-suc 4436 df-iom 4657 |
| This theorem is referenced by: nnoni 4677 nnord 4678 omsson 4679 nnsucpred 4683 nnpredcl 4689 frecrdg 6517 onasuc 6575 onmsuc 6582 nna0 6583 nnm0 6584 nnasuc 6585 nnmsuc 6586 nnsucelsuc 6600 nnsucsssuc 6601 nntri2or2 6607 nntr2 6612 nnaordi 6617 nnaword1 6622 nnaordex 6637 phpelm 6989 phplem4on 6990 omp1eomlem 7222 finnum 7316 pion 7458 prarloclemlo 7642 nninfctlemfo 12476 ennnfonelemk 12886 pwle2 16137 |
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