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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 7816 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | eloni 6324 | . 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 2121 Ord word 6313 Oncon0 6314 ωcom 7810 |
| 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 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-ext 2713 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-tru 1551 df-ex 1788 df-sb 2075 df-clab 2720 df-cleq 2733 df-clel 2816 df-ral 3056 df-rab 3394 df-v 3435 df-ss 3902 df-uni 4842 df-tr 5183 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-ord 6317 df-on 6318 df-om 7811 |
| This theorem is referenced by: nnlim 7824 nnsuc 7828 omsucne 7829 omun 7832 nnaordi 8548 nnaord 8549 nnaword 8557 nnmord 8562 nnmwordi 8565 nnawordex 8567 nnaordex2 8569 omsmo 8588 eldifsucnn 8594 enrefnn 8987 pssnn 9097 unfi 9099 phplem2 9133 php 9135 php4 9138 nndomog 9141 onomeneq 9142 ominf 9168 isinf 9169 dif1ennnALT 9181 findcard3 9187 unblem1 9196 isfinite2 9202 unfilem1 9209 inf3lem5 9548 inf3lem6 9549 cantnfp1lem2 9595 cantnfp1lem3 9596 ttrcltr 9632 ttrclss 9636 dmttrcl 9637 rnttrcl 9638 ttrclselem2 9642 dif1card 9927 nnadju 10115 pwsdompw 10120 ackbij1lem5 10140 ackbij1lem14 10149 ackbij1lem16 10151 ackbij1b 10155 ackbij2 10159 sornom 10194 infpssrlem4 10223 infpssrlem5 10224 fin23lem26 10242 fin23lem23 10243 isf32lem2 10271 isf32lem3 10272 isf32lem4 10273 domtriomlem 10359 axdc3lem2 10368 axdc3lem4 10370 canthp1lem2 10571 elni2 10795 piord 10798 addnidpi 10819 indpi 10825 om2uzf1oi 13910 fzennn 13925 hashp1i 14360 om2noseqf1o 28315 bnj529 34939 bnj1098 34981 bnj570 35102 bnj594 35109 bnj580 35110 bnj967 35142 bnj1001 35156 bnj1053 35173 bnj1071 35174 fineqvnttrclselem2 35318 fineqvnttrclselem3 35319 nnuni 35970 hfun 36421 finminlem 36561 mh-inf3f1 36784 finxpsuclem 37774 finxpsuc 37775 wepwso 43503 dflim5 43789 |
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