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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 6963 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
2 | eloni 5650 | . 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 1977 Ord word 5639 Oncon0 5640 ωcom 6957 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-tr 4681 df-eprel 4949 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-om 6958 |
This theorem is referenced by: nnlim 6970 nnsuc 6974 nnaordi 7585 nnaord 7586 nnaword 7594 nnmord 7599 nnmwordi 7602 nnawordex 7604 omsmo 7621 phplem1 8024 phplem2 8025 phplem3 8026 phplem4 8027 php 8029 php4 8032 nndomo 8039 ominf 8057 isinf 8058 pssnn 8063 dif1en 8078 unblem1 8097 isfinite2 8103 unfilem1 8109 inf3lem5 8412 inf3lem6 8413 cantnfp1lem2 8459 cantnfp1lem3 8460 dif1card 8716 pwsdompw 8909 ackbij1lem5 8929 ackbij1lem14 8938 ackbij1lem16 8940 ackbij1b 8944 ackbij2 8948 sornom 8982 infpssrlem4 9011 infpssrlem5 9012 fin23lem26 9030 fin23lem23 9031 isf32lem2 9059 isf32lem3 9060 isf32lem4 9061 domtriomlem 9147 axdc3lem2 9156 axdc3lem4 9158 canthp1lem2 9354 elni2 9578 piord 9581 addnidpi 9602 indpi 9608 om2uzf1oi 12614 fzennn 12629 hashp1i 13052 bnj529 30065 bnj1098 30108 bnj570 30229 bnj594 30236 bnj580 30237 bnj967 30269 bnj1001 30282 bnj1053 30298 bnj1071 30299 hfun 31455 finminlem 31482 finxpsuclem 32410 finxpsuc 32411 wepwso 36631 |
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