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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. Definition 2.1 of [Schloeder] p. 4. (Contributed by NM, 4-Nov-2002.) |
| Ref | Expression |
|---|---|
| df1o2 | ⊢ 1o = {∅} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-1o 8449 | . 2 ⊢ 1o = suc ∅ | |
| 2 | suc0 6438 | . 2 ⊢ suc ∅ = {∅} | |
| 3 | 1, 2 | eqtri 2786 | 1 ⊢ 1o = {∅} |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 ∅c0 4286 {csn 4589 suc csuc 6362 1oc1o 8442 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-v 3457 df-dif 3908 df-un 3910 df-nul 4287 df-suc 6366 df-1o 8449 |
| This theorem is referenced by: df2o3 8457 df2o2 8458 1oex 8459 1n0OLD 8469 nlim1 8470 el1o 8476 dif1o 8481 0we1 8487 oeeui 8584 map0e 8876 ensn1 9014 en1 9017 map1 9033 xp1en 9047 0sdom1dom 9202 1sdom2 9204 sdom1 9206 1sdom2dom 9210 ssttrcl 9680 ttrclss 9685 ttrclselem2 9691 infxpenlem 9993 fseqenlem1 10004 dju1dif 10152 infdju1 10169 pwdju1 10170 infmap2 10196 cflim2 10242 pwxpndom2 10645 pwdjundom 10647 gchxpidm 10649 wuncval2 10727 tsk1 10744 hashen1 14402 sylow2alem2 19683 psr1baslem 22345 fvcoe1 22367 coe1f2 22369 coe1sfi 22373 coe1add 22425 coe1mul2lem1 22428 coe1mul2lem2 22429 coe1mul2 22430 coe1tm 22434 ply1coe 22458 evls1rhmlem 22481 evl1sca 22494 evl1var 22496 pf1mpf 22512 pf1ind 22515 mat0dimbas0 22623 mavmul0g 22710 hmph0 23952 tdeglem2 26218 deg1ldg 26249 deg1leb 26252 deg1val 26253 old1 28058 fply1 33848 selvply1rhmlema 33908 selvply1rhmlemb 33909 selvply1rhmlem1 33910 selvply1rhm0 33916 bnj105 35113 bnj96 35253 bnj98 35255 bnj149 35263 r11 35487 r12 35488 fineqvnttrclselem1 35534 rankeq1o 36663 nmulrid 36689 ordcmp 36978 ssoninhaus 36979 onint1 36980 poimirlem28 38319 reheibor 38510 wopprc 43777 pwslnmlem0 43838 pwfi2f1o 43843 nadd1suc 44139 lincval0 49215 lco0 49227 linds0 49265 f1omo 49691 setc1oterm 50289 setc1ohomfval 50291 setc1ocofval 50292 funcsetc1o 50295 isinito2lem 50296 setc1onsubc 50400 |
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