| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 7866 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | eloni 6370 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝐴 ∈ ω → Ord 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2142 Ord word 6359 Oncon0 6360 ωcom 7860 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-tru 1572 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-ral 3079 df-rab 3416 df-v 3456 df-ss 3921 df-uni 4872 df-tr 5218 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-ord 6363 df-on 6364 df-om 7861 |
| This theorem is used by: nnlim 7874 nnsuc 7878 omsucne 7879 omun 7882 nnaordi 8602 nnaord 8603 nnaword 8611 nnmord 8616 nnmwordi 8619 nnawordex 8621 nnaordex2 8623 omsmo 8642 eldifsucnn 8648 enrefnn 9041 pssnn 9151 unfi 9153 phplem2 9187 php 9189 php4 9192 nndomog 9195 onomeneq 9196 ominf 9222 isinf 9223 dif1ennnALT 9235 findcard3 9241 unblem1 9250 isfinite2 9256 unfilem1 9263 inf3lem5 9599 inf3lem6 9600 cantnfp1lem2 9646 cantnfp1lem3 9647 ttrcltr 9683 ttrclss 9687 dmttrcl 9688 rnttrcl 9689 ttrclselem2 9693 dif1card 10001 nnadju 10188 pwsdompw 10193 ackbij1lem5 10213 ackbij1lem14 10222 ackbij1lem16 10224 ackbij1b 10228 ackbij2 10232 sornom 10267 infpssrlem4 10296 infpssrlem5 10297 fin23lem26 10315 fin23lem23 10316 isf32lem2 10344 isf32lem3 10345 isf32lem4 10346 domtriomlem 10432 axdc3lem2 10441 axdc3lem4 10443 canthp1lem2 10644 elni2 10868 piord 10871 addnidpi 10892 indpi 10898 om2uzf1oi 13996 fzennn 14011 hashp1i 14446 om2noseqf1o 28505 bnj529 35139 bnj1098 35181 bnj570 35302 bnj594 35309 bnj580 35310 bnj967 35342 bnj1001 35356 bnj1053 35373 bnj1071 35374 fineqvnttrclselem2 35543 fineqvnttrclselem3 35544 nnuni 36227 hfun 36678 finminlem 36857 mh-inf3f1 37080 finxpsuclem 38071 finxpsuc 38072 wepwso 43798 dflim5 44084 hashnnlt 45759 |
| Copyright terms: Public domain | W3C validator |