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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 4658 |
. 2
| |
| 2 | 1 | oneli 4476 |
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 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-13 2178 ax-14 2179 ax-ext 2187 ax-sep 4163 ax-nul 4171 ax-pow 4219 ax-pr 4254 ax-un 4481 ax-iinf 4637 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ral 2489 df-rex 2490 df-v 2774 df-dif 3168 df-un 3170 df-in 3172 df-ss 3179 df-nul 3461 df-pw 3618 df-sn 3639 df-pr 3640 df-uni 3851 df-int 3886 df-tr 4144 df-iord 4414 df-on 4416 df-suc 4419 df-iom 4640 |
| This theorem is referenced by: nnoni 4660 nnord 4661 omsson 4662 nnsucpred 4666 nnpredcl 4672 frecrdg 6496 onasuc 6554 onmsuc 6561 nna0 6562 nnm0 6563 nnasuc 6564 nnmsuc 6565 nnsucelsuc 6579 nnsucsssuc 6580 nntri2or2 6586 nntr2 6591 nnaordi 6596 nnaword1 6601 nnaordex 6616 phpelm 6965 phplem4on 6966 omp1eomlem 7198 finnum 7292 pion 7425 prarloclemlo 7609 nninfctlemfo 12394 ennnfonelemk 12804 pwle2 15972 |
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