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Mirrors > Home > MPE Home > Th. List > 1oex | Structured version Visualization version GIF version |
Description: Ordinal 1 is a set. (Contributed by BJ, 6-Apr-2019.) (Proof shortened by AV, 1-Jul-2022.) |
Ref | Expression |
---|---|
1oex | ⊢ 1o ∈ V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1on 8111 | . 2 ⊢ 1o ∈ On | |
2 | 1 | elexi 3515 | 1 ⊢ 1o ∈ V |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2114 Vcvv 3496 Oncon0 6193 1oc1o 8097 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pr 5332 ax-un 7463 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-ral 3145 df-rex 3146 df-rab 3149 df-v 3498 df-sbc 3775 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-tr 5175 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-ord 6196 df-on 6197 df-suc 6199 df-1o 8104 |
This theorem is referenced by: 2oex 8114 oev 8141 oe0 8149 oev2 8150 oneo 8209 nnneo 8280 endisj 8606 map2xp 8689 sdom1 8720 1sdom 8723 djuexb 9340 djurcl 9342 djurf1o 9344 djuss 9351 djuun 9357 1stinr 9360 2ndinr 9361 pm54.43 9431 dju1dif 9600 djucomen 9605 djuassen 9606 infdju1 9617 pwdju1 9618 infmap2 9642 cfsuc 9681 isfin4p1 9739 dcomex 9871 pwcfsdom 10007 cfpwsdom 10008 canthp1lem2 10077 pwxpndom2 10089 indpi 10331 pinq 10351 archnq 10404 sadcf 15804 sadcp1 15806 fnpr2ob 16833 xpsfrnel 16837 xpsle 16854 setcepi 17350 efgi1 18849 frgpuptinv 18899 dmdprdpr 19173 dprdpr 19174 coe1fval3 20378 00ply1bas 20410 ply1plusgfvi 20412 coe1z 20433 coe1tm 20443 xpstopnlem1 22419 xpstopnlem2 22421 xpsdsval 22993 fply1 30933 gonanegoal 32601 fmlaomn0 32639 gonan0 32641 gonarlem 32643 gonar 32644 fmlasucdisj 32648 satffunlem 32650 satffunlem2lem1 32653 ex-sategoelel12 32676 nofv 33166 noxp1o 33172 noextendlt 33178 bdayfo 33184 nosep1o 33188 nosepdmlem 33189 nolt02o 33201 nosupbnd1lem5 33214 nosupbnd2lem1 33217 noetalem1 33219 noetalem3 33221 noetalem4 33222 rankeq1o 33634 bj-pr2val 34332 bj-2upln1upl 34338 pw2f1ocnv 39641 clsk3nimkb 40397 clsk1indlem4 40401 clsk1indlem1 40402 |
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