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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 4476 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4479 | . 2 ⊢ (¬ 𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 3 | 1, 2 | pm2.61i 183 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1550 ifcif 4470 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-ext 2724 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-ex 1790 df-sb 2081 df-clab 2731 df-cleq 2744 df-clel 2827 df-if 4471 |
| This theorem is referenced by: csbif 4528 rabsnif 4672 somincom 6107 fsuppmptif 9331 supsn 9405 infsn 9439 wemaplem2 9481 cantnflem1 9630 xrmaxeq 13168 xrmineq 13169 xaddpnf1 13215 xaddmnf1 13217 rexmul 13260 max0add 15309 sumz 15721 prod1 15946 1arithlem4 16934 xpscf 17567 mgm2nsgrplem2 18928 mgm2nsgrplem3 18929 dmdprdsplitlem 20051 fczpsrbag 21942 mplcoe1 22059 mplcoe3 22060 mplcoe5 22062 evlslem2 22101 mdet0 22635 mdetralt2 22638 mdetunilem9 22649 madurid 22673 decpmatid 22799 cnmpopc 24959 pcoval2 25047 pcorevlem 25057 itgz 25812 itgvallem3 25817 iblposlem 25823 iblss2 25837 itgss 25843 ditg0 25884 cnplimc 25918 limcco 25924 dvexp3 26009 ply1nzb 26152 plyeq0lem 26239 dgrcolem2 26303 plydivlem4 26326 radcnv0 26445 efrlim 27000 mumullem2 27210 lgsval2lem 27337 lgsdilem2 27363 fsuppind 43110 dgrsub2 43650 sqrtcval 44155 relexp1idm 44228 relexp0idm 44229 |
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