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| Mirrors > Home > ILE Home > Th. List > nnon | GIF version | ||
| Description: A natural number is an ordinal number. (Contributed by NM, 27-Jun-1994.) |
| Ref | Expression |
|---|---|
| nnon | ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | omelon 4713 | . 2 ⊢ ω ∈ On | |
| 2 | 1 | oneli 4531 | 1 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 Oncon0 4466 ωcom 4694 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-iinf 4692 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-v 2805 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-uni 3899 df-int 3934 df-tr 4193 df-iord 4469 df-on 4471 df-suc 4474 df-iom 4695 |
| This theorem is referenced by: nnoni 4715 nnord 4716 omsson 4717 nnsucpred 4721 nnpredcl 4727 frecrdg 6617 onasuc 6677 onmsuc 6684 nna0 6685 nnm0 6686 nnasuc 6687 nnmsuc 6688 nnsucelsuc 6702 nnsucsssuc 6703 nntri2or2 6709 nntr2 6714 nnaordi 6719 nnaword1 6724 nnaordex 6739 phpelm 7096 phplem4on 7097 omp1eomlem 7336 finnum 7430 pion 7573 prarloclemlo 7757 nninfctlemfo 12674 ennnfonelemk 13084 pwle2 16703 |
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