| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > nnord | Unicode version | ||
| Description: A natural number is ordinal. (Contributed by NM, 17-Oct-1995.) |
| Ref | Expression |
|---|---|
| nnord |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnon 4708 |
. 2
| |
| 2 | eloni 4472 |
. 2
| |
| 3 | 1, 2 | syl 14 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-iinf 4686 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-uni 3894 df-int 3929 df-tr 4188 df-iord 4463 df-on 4465 df-suc 4468 df-iom 4689 |
| This theorem is referenced by: nnsucsssuc 6659 nnsucuniel 6662 nntri1 6663 nnsseleq 6668 nntr2 6670 phplem1 7037 phplem2 7038 phplem3 7039 phplem4 7040 phplem4dom 7047 nndomo 7049 1ndom2 7050 dif1en 7067 nnwetri 7107 unsnfi 7110 ctmlemr 7306 nnnninf 7324 nnnninfeq 7326 nnnninfeq2 7327 nninfisol 7331 piord 7530 addnidpig 7555 archnqq 7636 frecfzennn 10687 hashp1i 11073 ennnfonelemk 13020 ennnfonelemg 13023 ennnfonelemhf1o 13033 ennnfonelemhom 13035 ctinfom 13048 3dom 16587 nnsf 16607 peano4nninf 16608 nninfsellemeq 16616 nnnninfex 16624 |
| Copyright terms: Public domain | W3C validator |