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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 7580 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
2 | eloni 6196 | . 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 2110 Ord word 6185 Oncon0 6186 ωcom 7574 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-sep 5196 ax-nul 5203 ax-pr 5322 ax-un 7455 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3497 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4833 df-br 5060 df-opab 5122 df-tr 5166 df-eprel 5460 df-po 5469 df-so 5470 df-fr 5509 df-we 5511 df-ord 6189 df-on 6190 df-lim 6191 df-suc 6192 df-om 7575 |
This theorem is referenced by: nnlim 7587 nnsuc 7591 omsucne 7592 nnaordi 8238 nnaord 8239 nnaword 8247 nnmord 8252 nnmwordi 8255 nnawordex 8257 omsmo 8275 phplem1 8690 phplem2 8691 phplem3 8692 phplem4 8693 php 8695 php4 8698 nndomo 8706 ominf 8724 isinf 8725 pssnn 8730 dif1en 8745 unblem1 8764 isfinite2 8770 unfilem1 8776 inf3lem5 9089 inf3lem6 9090 cantnfp1lem2 9136 cantnfp1lem3 9137 dif1card 9430 pwsdompw 9620 ackbij1lem5 9640 ackbij1lem14 9649 ackbij1lem16 9651 ackbij1b 9655 ackbij2 9659 sornom 9693 infpssrlem4 9722 infpssrlem5 9723 fin23lem26 9741 fin23lem23 9742 isf32lem2 9770 isf32lem3 9771 isf32lem4 9772 domtriomlem 9858 axdc3lem2 9867 axdc3lem4 9869 canthp1lem2 10069 elni2 10293 piord 10296 addnidpi 10317 indpi 10323 om2uzf1oi 13315 fzennn 13330 hashp1i 13758 bnj529 32007 bnj1098 32050 bnj570 32172 bnj594 32179 bnj580 32180 bnj967 32212 bnj1001 32226 bnj1053 32243 bnj1071 32244 hfun 33634 finminlem 33661 finxpsuclem 34672 finxpsuc 34673 wepwso 39636 nndomog 39890 |
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