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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 7868 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | eloni 6371 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝐴 ∈ ω → Ord 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2149 Ord word 6360 Oncon0 6361 ωcom 7862 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1570 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-ral 3086 df-rab 3423 df-v 3463 df-ss 3928 df-uni 4875 df-tr 5221 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-ord 6364 df-on 6365 df-om 7863 |
| This theorem is referenced by: nnlim 7876 nnsuc 7880 omsucne 7881 omun 7884 nnaordi 8604 nnaord 8605 nnaword 8613 nnmord 8618 nnmwordi 8621 nnawordex 8623 nnaordex2 8625 omsmo 8644 eldifsucnn 8650 enrefnn 9043 pssnn 9153 unfi 9155 phplem2 9189 php 9191 php4 9194 nndomog 9197 onomeneq 9198 ominf 9224 isinf 9225 dif1ennnALT 9237 findcard3 9243 unblem1 9252 isfinite2 9258 unfilem1 9265 inf3lem5 9601 inf3lem6 9602 cantnfp1lem2 9648 cantnfp1lem3 9649 ttrcltr 9685 ttrclss 9689 dmttrcl 9690 rnttrcl 9691 ttrclselem2 9695 dif1card 9994 nnadju 10181 pwsdompw 10186 ackbij1lem5 10206 ackbij1lem14 10215 ackbij1lem16 10217 ackbij1b 10221 ackbij2 10225 sornom 10261 infpssrlem4 10290 infpssrlem5 10291 fin23lem26 10309 fin23lem23 10310 isf32lem2 10338 isf32lem3 10339 isf32lem4 10340 domtriomlem 10426 axdc3lem2 10435 axdc3lem4 10437 canthp1lem2 10638 elni2 10862 piord 10865 addnidpi 10886 indpi 10892 om2uzf1oi 13989 fzennn 14004 hashp1i 14439 om2noseqf1o 28460 bnj529 35075 bnj1098 35117 bnj570 35238 bnj594 35245 bnj580 35246 bnj967 35278 bnj1001 35292 bnj1053 35309 bnj1071 35310 fineqvnttrclselem2 35468 fineqvnttrclselem3 35469 nnuni 36152 hfun 36603 finminlem 36752 mh-inf3f1 36975 finxpsuclem 37966 finxpsuc 37967 wepwso 43697 dflim5 43983 hashnnlt 45658 |
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