| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > 1oex | GIF version | ||
| Description: Ordinal 1 is a set. (Contributed by BJ, 4-Jul-2022.) |
| Ref | Expression |
|---|---|
| 1oex | ⊢ 1o ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1on 6684 | . 2 ⊢ 1o ∈ On | |
| 2 | 1 | elexi 2834 | 1 ⊢ 1o ∈ V |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2209 Vcvv 2821 Oncon0 4503 1oc1o 6670 |
| 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 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-nul 4254 ax-pow 4306 ax-pr 4341 ax-un 4573 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3687 df-sn 3711 df-pr 3712 df-uni 3931 df-tr 4225 df-iord 4506 df-on 4508 df-suc 4511 df-1o 6677 |
| This theorem is referenced by: 2oex 6694 1lt2o 6705 map1 7091 modom 7098 rex2dom 7100 1domsn 7105 pw1fin 7207 exmidpw2en 7209 djuexb 7374 djurclr 7380 djurcl 7382 djurf1or 7387 djurf1o 7389 djuss 7400 infnninf 7454 infnninfOLD 7455 ismkvnex 7485 pr2cv1 7531 dju1p1e2 7539 exmidfodomrlemr 7544 exmidfodomrlemrALT 7545 djucomen 7562 djuassen 7563 pw1on 7575 pw1nel3 7580 sucpw1ne3 7581 sucpw1nel3 7582 fmelpw1o 7596 indpi 7699 prarloclemlt 7850 fxnn0nninf 10854 inftonninf 10857 nninfctlemfo 12795 nninfct 12796 enctlem 13301 fnpr2ob 13638 xpsfrnel 13642 djurclALT 16744 bj-charfun 16747 pw1map 16939 pw1mapen 16940 pwle2 16942 pw1nct 16947 pw1dceq 16948 exmidcon 16950 nnnninfex 16970 nninfnfiinf 16971 |
| Copyright terms: Public domain | W3C validator |