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Mirrors > Home > MPE Home > Th. List > df1o2 | Structured version Visualization version GIF version |
Description: Expanded value of the ordinal number 1. (Contributed by NM, 4-Nov-2002.) |
Ref | Expression |
---|---|
df1o2 | ⊢ 1o = {∅} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-1o 8096 | . 2 ⊢ 1o = suc ∅ | |
2 | suc0 6260 | . 2 ⊢ suc ∅ = {∅} | |
3 | 1, 2 | eqtri 2844 | 1 ⊢ 1o = {∅} |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 ∅c0 4291 {csn 4561 suc csuc 6188 1oc1o 8089 |
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 2156 ax-12 2172 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-v 3497 df-dif 3939 df-un 3941 df-nul 4292 df-suc 6192 df-1o 8096 |
This theorem is referenced by: df2o3 8111 df2o2 8112 1n0 8113 el1o 8118 dif1o 8119 0we1 8125 oeeui 8222 map0e 8440 ensn1 8567 en1 8570 map1 8586 xp1en 8597 pwfi 8813 infxpenlem 9433 fseqenlem1 9444 dju1dif 9592 infdju1 9609 pwdju1 9610 infmap2 9634 cflim2 9679 pwxpndom2 10081 pwdjundom 10083 gchxpidm 10085 wuncval2 10163 tsk1 10180 hashen1 13725 sylow2alem2 18737 psr1baslem 20347 fvcoe1 20369 coe1f2 20371 coe1sfi 20375 coe1add 20426 coe1mul2lem1 20429 coe1mul2lem2 20430 coe1mul2 20431 coe1tm 20435 ply1coe 20458 evls1rhmlem 20478 evl1sca 20491 evl1var 20493 pf1mpf 20509 pf1ind 20512 mat0dimbas0 21069 mavmul0g 21156 hmph0 22397 tdeglem2 24649 deg1ldg 24680 deg1leb 24683 deg1val 24684 fply1 30926 bnj105 31989 bnj96 32132 bnj98 32134 bnj149 32142 rankeq1o 33627 ordcmp 33790 ssoninhaus 33791 onint1 33792 poimirlem28 34914 reheibor 35111 wopprc 39620 pwslnmlem0 39684 pwfi2f1o 39689 lincval0 44463 lco0 44475 linds0 44513 |
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