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Mirrors > Home > MPE Home > Th. List > nnon | Structured version Visualization version 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 | omsson 7626 | . 2 ⊢ ω ⊆ On | |
2 | 1 | sseli 3883 | 1 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2112 Oncon0 6191 ωcom 7622 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-ext 2708 |
This theorem depends on definitions: df-bi 210 df-an 400 df-tru 1546 df-ex 1788 df-sb 2073 df-clab 2715 df-cleq 2728 df-clel 2809 df-rab 3060 df-v 3400 df-in 3860 df-ss 3870 df-om 7623 |
This theorem is referenced by: nnoni 7629 nnord 7630 peano4 7648 findsg 7655 onasuc 8233 onmsuc 8234 nna0 8310 nnm0 8311 nnasuc 8312 nnmsuc 8313 nnesuc 8314 nnecl 8319 nnawordi 8327 nnmword 8339 nnawordex 8343 nnaordex 8344 oaabslem 8350 oaabs 8351 oaabs2 8352 omabslem 8353 omabs 8354 nnneo 8358 nneob 8359 onfin2 8847 nndomo 8849 findcard3 8892 dffi3 9025 card2inf 9149 elom3 9241 cantnfp1lem3 9273 cnfcomlem 9292 cnfcom 9293 cnfcom3 9297 finnum 9529 cardnn 9544 nnsdomel 9571 harsucnn 9579 nnadjuALT 9777 ficardun2 9781 ficardun2OLD 9782 ackbij1lem15 9813 ackbij2lem2 9819 ackbij2lem3 9820 ackbij2 9822 fin23lem22 9906 isf32lem5 9936 fin1a2lem4 9982 fin1a2lem9 9987 pwfseqlem3 10239 winainflem 10272 wunr1om 10298 tskr1om 10346 grothomex 10408 pion 10458 om2uzlt2i 13489 bnj168 32375 satfvsuc 32990 satf0suc 33005 sat1el2xp 33008 fmlasuc0 33013 elhf2 34163 findreccl 34328 rdgeqoa 35227 exrecfnlem 35236 finxpreclem4 35251 finxpreclem6 35253 harinf 40500 |
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