Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
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 8101 | . 2 ⊢ 1o = suc ∅ | |
2 | 0elon 6243 | . . 3 ⊢ ∅ ∈ On | |
3 | 2 | onsuci 7552 | . 2 ⊢ suc ∅ ∈ On |
4 | 1, 3 | eqeltri 2909 | 1 ⊢ 1o ∈ On |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2110 ∅c0 4290 Oncon0 6190 suc csuc 6192 1oc1o 8094 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5202 ax-nul 5209 ax-pr 5329 ax-un 7460 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3772 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-pss 3953 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4838 df-br 5066 df-opab 5128 df-tr 5172 df-eprel 5464 df-po 5473 df-so 5474 df-fr 5513 df-we 5515 df-ord 6193 df-on 6194 df-suc 6196 df-1o 8101 |
This theorem is referenced by: 1oex 8109 2on 8110 ondif2 8126 2oconcl 8127 fnoe 8134 oesuclem 8149 oecl 8161 o1p1e2 8164 o2p2e4OLD 8166 om1r 8168 oe1m 8170 omword1 8198 omword2 8199 omlimcl 8203 oneo 8206 oewordi 8216 oelim2 8220 oeoa 8222 oeoe 8224 oeeui 8227 oaabs2 8271 enpr2d 8596 sucxpdom 8726 oancom 9113 cnfcom3lem 9165 pm54.43lem 9427 pm54.43 9428 infxpenc 9443 infxpenc2 9447 undjudom 9592 endjudisj 9593 djuen 9594 dju1p1e2 9598 dju1p1e2ALT 9599 xpdjuen 9604 mapdjuen 9605 djuxpdom 9610 djufi 9611 djuinf 9613 infdju1 9614 pwdju1 9615 pwdjudom 9637 isfin4p1 9736 pwxpndom2 10086 wunex2 10159 wuncval2 10168 tsk2 10186 efgmnvl 18839 frgpnabllem1 18992 dmdprdpr 19170 dprdpr 19171 psr1crng 20354 psr1assa 20355 psr1tos 20356 psr1bas 20358 vr1cl2 20360 ply1lss 20363 ply1subrg 20364 ressply1bas2 20395 ressply1add 20397 ressply1mul 20398 ressply1vsca 20399 subrgply1 20400 ply1plusgfvi 20409 psr1ring 20414 psr1lmod 20416 psr1sca 20417 ply1ascl 20425 subrg1ascl 20426 subrg1asclcl 20427 subrgvr1 20428 subrgvr1cl 20429 coe1z 20430 coe1mul2lem1 20434 coe1mul2 20436 coe1tm 20440 evls1val 20482 evls1rhm 20484 evls1sca 20485 evl1val 20491 evl1rhm 20494 evl1sca 20496 evl1var 20498 evls1var 20500 mpfpf1 20513 pf1mpf 20514 pf1ind 20517 xkofvcn 22291 xpstopnlem1 22416 ufildom1 22533 deg1z 24680 deg1addle 24694 deg1vscale 24697 deg1vsca 24698 deg1mulle2 24702 deg1le0 24704 ply1nzb 24715 sltval2 33163 noextendlt 33176 sltsolem1 33180 nosepnelem 33184 nolt02o 33199 rankeq1o 33632 ssoninhaus 33796 onint1 33797 1oequni2o 34648 finxp1o 34672 finxpreclem3 34673 finxpreclem4 34674 finxpreclem5 34675 finxpsuclem 34677 pw2f1ocnv 39632 wepwsolem 39640 pwfi2f1o 39694 sn1dom 39890 pr2dom 39891 tr3dom 39892 clsk1indlem4 40392 ply1ass23l 44435 |
Copyright terms: Public domain | W3C validator |