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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 4702 | . 2 ⊢ ω ∈ On | |
| 2 | 1 | oneli 4520 | 1 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 Oncon0 4455 ωcom 4683 |
| 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-nul 4210 ax-pow 4259 ax-pr 4294 ax-un 4525 ax-iinf 4681 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-pw 3651 df-sn 3672 df-pr 3673 df-uni 3889 df-int 3924 df-tr 4183 df-iord 4458 df-on 4460 df-suc 4463 df-iom 4684 |
| This theorem is referenced by: nnoni 4704 nnord 4705 omsson 4706 nnsucpred 4710 nnpredcl 4716 frecrdg 6565 onasuc 6625 onmsuc 6632 nna0 6633 nnm0 6634 nnasuc 6635 nnmsuc 6636 nnsucelsuc 6650 nnsucsssuc 6651 nntri2or2 6657 nntr2 6662 nnaordi 6667 nnaword1 6672 nnaordex 6687 phpelm 7041 phplem4on 7042 omp1eomlem 7277 finnum 7371 pion 7513 prarloclemlo 7697 nninfctlemfo 12582 ennnfonelemk 12992 pwle2 16477 |
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