![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > nnord | 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 4607 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
2 | eloni 4373 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
3 | 1, 2 | syl 14 | 1 ⊢ (𝐴 ∈ ω → Ord 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 2148 Ord word 4360 Oncon0 4361 ωcom 4587 |
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 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-sep 4119 ax-nul 4127 ax-pow 4172 ax-pr 4207 ax-un 4431 ax-iinf 4585 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-v 2739 df-dif 3131 df-un 3133 df-in 3135 df-ss 3142 df-nul 3423 df-pw 3577 df-sn 3598 df-pr 3599 df-uni 3809 df-int 3844 df-tr 4100 df-iord 4364 df-on 4366 df-suc 4369 df-iom 4588 |
This theorem is referenced by: nnsucsssuc 6488 nnsucuniel 6491 nntri1 6492 nnsseleq 6497 nntr2 6499 phplem1 6847 phplem2 6848 phplem3 6849 phplem4 6850 phplem4dom 6857 nndomo 6859 dif1en 6874 nnwetri 6910 unsnfi 6913 ctmlemr 7102 nnnninf 7119 nnnninfeq 7121 nnnninfeq2 7122 nninfisol 7126 piord 7305 addnidpig 7330 archnqq 7411 frecfzennn 10419 hashp1i 10781 ennnfonelemk 12391 ennnfonelemg 12394 ennnfonelemhf1o 12404 ennnfonelemhom 12406 ctinfom 12419 nnsf 14525 peano4nninf 14526 nninfsellemeq 14534 |
Copyright terms: Public domain | W3C validator |