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Mirrors > Home > MPE Home > Th. List > 1on | Structured version Visualization version GIF version |
Description: Ordinal 1 is an ordinal number. (Contributed by NM, 29-Oct-1995.) |
Ref | Expression |
---|---|
1on | ⊢ 1o ∈ On |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-1o 8104 | . 2 ⊢ 1o = suc ∅ | |
2 | 0elon 6246 | . . 3 ⊢ ∅ ∈ On | |
3 | 2 | onsuci 7555 | . 2 ⊢ suc ∅ ∈ On |
4 | 1, 3 | eqeltri 2911 | 1 ⊢ 1o ∈ On |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2114 ∅c0 4293 Oncon0 6193 suc csuc 6195 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: 1oex 8112 2on 8113 ondif2 8129 2oconcl 8130 fnoe 8137 oesuclem 8152 oecl 8164 o1p1e2 8167 o2p2e4OLD 8169 om1r 8171 oe1m 8173 omword1 8201 omword2 8202 omlimcl 8206 oneo 8209 oewordi 8219 oelim2 8223 oeoa 8225 oeoe 8227 oeeui 8230 oaabs2 8274 enpr2d 8599 sucxpdom 8729 oancom 9116 cnfcom3lem 9168 pm54.43lem 9430 pm54.43 9431 infxpenc 9446 infxpenc2 9450 undjudom 9595 endjudisj 9596 djuen 9597 dju1p1e2 9601 dju1p1e2ALT 9602 xpdjuen 9607 mapdjuen 9608 djuxpdom 9613 djufi 9614 djuinf 9616 infdju1 9617 pwdju1 9618 pwdjudom 9640 isfin4p1 9739 pwxpndom2 10089 wunex2 10162 wuncval2 10171 tsk2 10189 efgmnvl 18842 frgpnabllem1 18995 dmdprdpr 19173 dprdpr 19174 psr1crng 20357 psr1assa 20358 psr1tos 20359 psr1bas 20361 vr1cl2 20363 ply1lss 20366 ply1subrg 20367 ressply1bas2 20398 ressply1add 20400 ressply1mul 20401 ressply1vsca 20402 subrgply1 20403 ply1plusgfvi 20412 psr1ring 20417 psr1lmod 20419 psr1sca 20420 ply1ascl 20428 subrg1ascl 20429 subrg1asclcl 20430 subrgvr1 20431 subrgvr1cl 20432 coe1z 20433 coe1mul2lem1 20437 coe1mul2 20439 coe1tm 20443 evls1val 20485 evls1rhm 20487 evls1sca 20488 evl1val 20494 evl1rhm 20497 evl1sca 20499 evl1var 20501 evls1var 20503 mpfpf1 20516 pf1mpf 20517 pf1ind 20520 xkofvcn 22294 xpstopnlem1 22419 ufildom1 22536 deg1z 24683 deg1addle 24697 deg1vscale 24700 deg1vsca 24701 deg1mulle2 24705 deg1le0 24707 ply1nzb 24718 sltval2 33165 noextendlt 33178 sltsolem1 33182 nosepnelem 33186 nolt02o 33201 rankeq1o 33634 ssoninhaus 33798 onint1 33799 1oequni2o 34651 finxp1o 34675 finxpreclem3 34676 finxpreclem4 34677 finxpreclem5 34678 finxpsuclem 34680 pw2f1ocnv 39641 wepwsolem 39649 pwfi2f1o 39703 sn1dom 39899 pr2dom 39900 tr3dom 39901 clsk1indlem4 40401 ply1ass23l 44443 |
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