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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 7826 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | eloni 6337 | . 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 6326 Oncon0 6327 ωcom 7820 |
| 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 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rab 3402 df-v 3444 df-ss 3920 df-uni 4866 df-tr 5208 df-po 5542 df-so 5543 df-fr 5587 df-we 5589 df-ord 6330 df-on 6331 df-om 7821 |
| This theorem is referenced by: nnlim 7834 nnsuc 7838 omsucne 7839 omun 7842 nnaordi 8558 nnaord 8559 nnaword 8567 nnmord 8572 nnmwordi 8575 nnawordex 8577 nnaordex2 8579 omsmo 8598 eldifsucnn 8604 enrefnn 8997 pssnn 9107 unfi 9109 phplem2 9143 php 9145 php4 9148 nndomog 9151 onomeneq 9152 ominf 9178 isinf 9179 dif1ennnALT 9191 findcard3 9197 unblem1 9206 isfinite2 9212 unfilem1 9219 inf3lem5 9555 inf3lem6 9556 cantnfp1lem2 9602 cantnfp1lem3 9603 ttrcltr 9639 ttrclss 9643 dmttrcl 9644 rnttrcl 9645 ttrclselem2 9649 dif1card 9934 nnadju 10122 pwsdompw 10127 ackbij1lem5 10147 ackbij1lem14 10156 ackbij1lem16 10158 ackbij1b 10162 ackbij2 10166 sornom 10201 infpssrlem4 10230 infpssrlem5 10231 fin23lem26 10249 fin23lem23 10250 isf32lem2 10278 isf32lem3 10279 isf32lem4 10280 domtriomlem 10366 axdc3lem2 10375 axdc3lem4 10377 canthp1lem2 10578 elni2 10802 piord 10805 addnidpi 10826 indpi 10832 om2uzf1oi 13890 fzennn 13905 hashp1i 14340 om2noseqf1o 28314 bnj529 34924 bnj1098 34966 bnj570 35087 bnj594 35094 bnj580 35095 bnj967 35127 bnj1001 35141 bnj1053 35158 bnj1071 35159 fineqvnttrclselem2 35306 fineqvnttrclselem3 35307 nnuni 35949 hfun 36400 finminlem 36540 finxpsuclem 37679 finxpsuc 37680 wepwso 43429 dflim5 43715 |
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