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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 7818 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | eloni 6329 | . 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 6318 Oncon0 6319 ωcom 7812 |
| 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 3391 df-v 3432 df-ss 3907 df-uni 4852 df-tr 5194 df-po 5534 df-so 5535 df-fr 5579 df-we 5581 df-ord 6322 df-on 6323 df-om 7813 |
| This theorem is referenced by: nnlim 7826 nnsuc 7830 omsucne 7831 omun 7834 nnaordi 8549 nnaord 8550 nnaword 8558 nnmord 8563 nnmwordi 8566 nnawordex 8568 nnaordex2 8570 omsmo 8589 eldifsucnn 8595 enrefnn 8988 pssnn 9098 unfi 9100 phplem2 9134 php 9136 php4 9139 nndomog 9142 onomeneq 9143 ominf 9169 isinf 9170 dif1ennnALT 9182 findcard3 9188 unblem1 9197 isfinite2 9203 unfilem1 9210 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 28311 bnj529 34904 bnj1098 34946 bnj570 35067 bnj594 35074 bnj580 35075 bnj967 35107 bnj1001 35121 bnj1053 35138 bnj1071 35139 fineqvnttrclselem2 35286 fineqvnttrclselem3 35287 nnuni 35929 hfun 36380 finminlem 36520 mh-inf3f1 36743 finxpsuclem 37733 finxpsuc 37734 wepwso 43495 dflim5 43781 |
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