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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 4431 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
2 | iffalse 4434 | . 2 ⊢ (¬ 𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
3 | 1, 2 | pm2.61i 185 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1543 ifcif 4425 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-ext 2708 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-ex 1788 df-sb 2073 df-clab 2715 df-cleq 2728 df-clel 2809 df-if 4426 |
This theorem is referenced by: csbif 4482 rabsnif 4625 somincom 5979 fsuppmptif 8993 supsn 9066 infsn 9099 wemaplem2 9141 cantnflem1 9282 xrmaxeq 12734 xrmineq 12735 xaddpnf1 12781 xaddmnf1 12783 rexmul 12826 max0add 14839 sumz 15251 prod1 15469 1arithlem4 16442 xpscf 17024 mgm2nsgrplem2 18300 mgm2nsgrplem3 18301 dmdprdsplitlem 19378 fczpsrbag 20836 mplcoe1 20948 mplcoe3 20949 mplcoe5 20951 evlslem2 20993 mdet0 21457 mdetralt2 21460 mdetunilem9 21471 madurid 21495 decpmatid 21621 cnmpopc 23779 pcoval2 23867 pcorevlem 23877 itgz 24632 itgvallem3 24637 iblposlem 24643 iblss2 24657 itgss 24663 ditg0 24704 cnplimc 24738 limcco 24744 dvexp3 24829 ply1nzb 24974 plyeq0lem 25058 dgrcolem2 25122 plydivlem4 25143 radcnv0 25262 efrlim 25806 mumullem2 26016 lgsval2lem 26142 lgsdilem2 26168 fsuppind 39930 dgrsub2 40604 sqrtcval 40866 relexp1idm 40940 relexp0idm 40941 |
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