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| Mirrors > Home > MPE Home > Th. List > nnord | Structured version Visualization version GIF version | ||
| Description: A natural number is ordinal. (Contributed by NM, 17-Oct-1995.) |
| Ref | Expression |
|---|---|
| nnord | ⊢ (𝐴 ∈ ω → Ord 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnon 7812 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | eloni 6322 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝐴 ∈ ω → Ord 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 Ord word 6311 Oncon0 6312 ωcom 7806 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2707 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2714 df-cleq 2727 df-clel 2810 df-ral 3050 df-rab 3388 df-v 3429 df-ss 3902 df-uni 4841 df-tr 5182 df-po 5528 df-so 5529 df-fr 5573 df-we 5575 df-ord 6315 df-on 6316 df-om 7807 |
| This theorem is referenced by: nnlim 7820 nnsuc 7824 omsucne 7825 omun 7828 nnaordi 8543 nnaord 8544 nnaword 8552 nnmord 8557 nnmwordi 8560 nnawordex 8562 nnaordex2 8564 omsmo 8583 eldifsucnn 8589 enrefnn 8982 pssnn 9092 unfi 9094 phplem2 9128 php 9130 php4 9133 nndomog 9136 onomeneq 9137 ominf 9163 isinf 9164 dif1ennnALT 9176 findcard3 9182 unblem1 9191 isfinite2 9197 unfilem1 9204 inf3lem5 9542 inf3lem6 9543 cantnfp1lem2 9589 cantnfp1lem3 9590 ttrcltr 9626 ttrclss 9630 dmttrcl 9631 rnttrcl 9632 ttrclselem2 9636 dif1card 9921 nnadju 10109 pwsdompw 10114 ackbij1lem5 10134 ackbij1lem14 10143 ackbij1lem16 10145 ackbij1b 10149 ackbij2 10153 sornom 10188 infpssrlem4 10217 infpssrlem5 10218 fin23lem26 10236 fin23lem23 10237 isf32lem2 10265 isf32lem3 10266 isf32lem4 10267 domtriomlem 10353 axdc3lem2 10362 axdc3lem4 10364 canthp1lem2 10565 elni2 10789 piord 10792 addnidpi 10813 indpi 10819 om2uzf1oi 13904 fzennn 13919 hashp1i 14354 om2noseqf1o 28281 bnj529 34872 bnj1098 34914 bnj570 35035 bnj594 35042 bnj580 35043 bnj967 35075 bnj1001 35089 bnj1053 35106 bnj1071 35107 fineqvnttrclselem2 35254 fineqvnttrclselem3 35255 nnuni 35897 hfun 36348 finminlem 36488 mh-inf3f1 36711 finxpsuclem 37701 finxpsuc 37702 wepwso 43459 dflim5 43745 |
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