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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 7814 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | eloni 6326 | . 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 6315 Oncon0 6316 ωcom 7808 |
| 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 3051 df-rab 3399 df-v 3441 df-ss 3917 df-uni 4863 df-tr 5205 df-po 5531 df-so 5532 df-fr 5576 df-we 5578 df-ord 6319 df-on 6320 df-om 7809 |
| This theorem is referenced by: nnlim 7822 nnsuc 7826 omsucne 7827 omun 7830 nnaordi 8546 nnaord 8547 nnaword 8555 nnmord 8560 nnmwordi 8563 nnawordex 8565 nnaordex2 8567 omsmo 8586 eldifsucnn 8592 enrefnn 8985 pssnn 9095 unfi 9097 phplem2 9131 php 9133 php4 9136 nndomog 9139 onomeneq 9140 ominf 9166 isinf 9167 dif1ennnALT 9179 findcard3 9185 unblem1 9194 isfinite2 9200 unfilem1 9207 inf3lem5 9543 inf3lem6 9544 cantnfp1lem2 9590 cantnfp1lem3 9591 ttrcltr 9627 ttrclss 9631 dmttrcl 9632 rnttrcl 9633 ttrclselem2 9637 dif1card 9922 nnadju 10110 pwsdompw 10115 ackbij1lem5 10135 ackbij1lem14 10144 ackbij1lem16 10146 ackbij1b 10150 ackbij2 10154 sornom 10189 infpssrlem4 10218 infpssrlem5 10219 fin23lem26 10237 fin23lem23 10238 isf32lem2 10266 isf32lem3 10267 isf32lem4 10268 domtriomlem 10354 axdc3lem2 10363 axdc3lem4 10365 canthp1lem2 10566 elni2 10790 piord 10793 addnidpi 10814 indpi 10820 om2uzf1oi 13878 fzennn 13893 hashp1i 14328 om2noseqf1o 28280 bnj529 34876 bnj1098 34918 bnj570 35040 bnj594 35047 bnj580 35048 bnj967 35080 bnj1001 35094 bnj1053 35111 bnj1071 35112 fineqvnttrclselem2 35257 fineqvnttrclselem3 35258 nnuni 35900 hfun 36351 finminlem 36491 finxpsuclem 37571 finxpsuc 37572 wepwso 43322 dflim5 43608 |
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