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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 6328 | . 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 6317 Oncon0 6318 ωcom 7810 |
| 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 3401 df-v 3443 df-ss 3919 df-uni 4865 df-tr 5207 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-ord 6321 df-on 6322 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 9545 inf3lem6 9546 cantnfp1lem2 9592 cantnfp1lem3 9593 ttrcltr 9629 ttrclss 9633 dmttrcl 9634 rnttrcl 9635 ttrclselem2 9639 dif1card 9924 nnadju 10112 pwsdompw 10117 ackbij1lem5 10137 ackbij1lem14 10146 ackbij1lem16 10148 ackbij1b 10152 ackbij2 10156 sornom 10191 infpssrlem4 10220 infpssrlem5 10221 fin23lem26 10239 fin23lem23 10240 isf32lem2 10268 isf32lem3 10269 isf32lem4 10270 domtriomlem 10356 axdc3lem2 10365 axdc3lem4 10367 canthp1lem2 10568 elni2 10792 piord 10795 addnidpi 10816 indpi 10822 om2uzf1oi 13880 fzennn 13895 hashp1i 14330 om2noseqf1o 28301 bnj529 34899 bnj1098 34941 bnj570 35063 bnj594 35070 bnj580 35071 bnj967 35103 bnj1001 35117 bnj1053 35134 bnj1071 35135 fineqvnttrclselem2 35280 fineqvnttrclselem3 35281 nnuni 35923 hfun 36374 finminlem 36514 finxpsuclem 37604 finxpsuc 37605 wepwso 43352 dflim5 43638 |
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