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| Mirrors > Home > MPE Home > Th. List > ifid | Structured version Visualization version GIF version | ||
| Description: Identical true and false arguments in the conditional operator. (Contributed by NM, 18-Apr-2005.) |
| Ref | Expression |
|---|---|
| ifid | ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iftrue 4482 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4485 | . 2 ⊢ (¬ 𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 3 | 1, 2 | pm2.61i 182 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ifcif 4476 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2701 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-ex 1780 df-sb 2066 df-clab 2708 df-cleq 2721 df-clel 2803 df-if 4477 |
| This theorem is referenced by: csbif 4534 rabsnif 4675 somincom 6083 fsuppmptif 9289 supsn 9363 infsn 9397 wemaplem2 9439 cantnflem1 9585 xrmaxeq 13081 xrmineq 13082 xaddpnf1 13128 xaddmnf1 13130 rexmul 13173 max0add 15217 sumz 15629 prod1 15851 1arithlem4 16838 xpscf 17469 mgm2nsgrplem2 18793 mgm2nsgrplem3 18794 dmdprdsplitlem 19918 fczpsrbag 21828 mplcoe1 21942 mplcoe3 21943 mplcoe5 21945 evlslem2 21984 mdet0 22491 mdetralt2 22494 mdetunilem9 22505 madurid 22529 decpmatid 22655 cnmpopc 24820 pcoval2 24914 pcorevlem 24924 itgz 25680 itgvallem3 25685 iblposlem 25691 iblss2 25705 itgss 25711 ditg0 25752 cnplimc 25786 limcco 25792 dvexp3 25880 ply1nzb 26026 plyeq0lem 26113 dgrcolem2 26178 plydivlem4 26202 radcnv0 26323 efrlim 26877 efrlimOLD 26878 mumullem2 27088 lgsval2lem 27216 lgsdilem2 27242 fsuppind 42563 dgrsub2 43108 sqrtcval 43614 relexp1idm 43687 relexp0idm 43688 |
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