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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 4593 | . 2 ⊢ ω ∈ On | |
2 | 1 | oneli 4413 | 1 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 2141 Oncon0 4348 ωcom 4574 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-iinf 4572 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-pw 3568 df-sn 3589 df-pr 3590 df-uni 3797 df-int 3832 df-tr 4088 df-iord 4351 df-on 4353 df-suc 4356 df-iom 4575 |
This theorem is referenced by: nnoni 4595 nnord 4596 omsson 4597 nnsucpred 4601 nnpredcl 4607 frecrdg 6387 onasuc 6445 onmsuc 6452 nna0 6453 nnm0 6454 nnasuc 6455 nnmsuc 6456 nnsucelsuc 6470 nnsucsssuc 6471 nntri2or2 6477 nntr2 6482 nnaordi 6487 nnaword1 6492 nnaordex 6507 phpelm 6844 phplem4on 6845 omp1eomlem 7071 finnum 7160 pion 7272 prarloclemlo 7456 ennnfonelemk 12355 pwle2 14031 |
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