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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 4492 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4495 | . 2 ⊢ (¬ 𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 3 | 1, 2 | pm2.61i 184 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1568 ifcif 4486 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-ex 1808 df-sb 2095 df-clab 2740 df-cleq 2753 df-clel 2836 df-if 4487 |
| This theorem is referenced by: csbif 4544 rabsnif 4688 somincom 6134 fsuppmptif 9358 supsn 9432 infsn 9466 wemaplem2 9508 cantnflem1 9657 xrmaxeq 13204 xrmineq 13205 xaddpnf1 13251 xaddmnf1 13253 rexmul 13296 max0add 15361 sumz 15773 prod1 15998 1arithlem4 16985 xpscf 17618 mgm2nsgrplem2 18980 mgm2nsgrplem3 18981 dmdprdsplitlem 20108 fczpsrbag 22050 mplcoe1 22167 mplcoe3 22168 mplcoe5 22170 evlslem2 22209 mdet0 22742 mdetralt2 22745 mdetunilem9 22756 madurid 22780 decpmatid 22906 cnmpopc 25066 pcoval2 25154 pcorevlem 25164 itgz 25919 itgvallem3 25924 iblposlem 25930 iblss2 25944 itgss 25950 ditg0 25991 cnplimc 26025 limcco 26031 dvexp3 26116 ply1nzb 26259 plyeq0lem 26346 dgrcolem2 26410 plydivlem4 26436 radcnv0 26555 efrlim 27110 mumullem2 27320 lgsval2lem 27447 lgsdilem2 27473 fsuppind 43292 dgrsub2 43832 sqrtcval 44337 relexp1idm 44410 relexp0idm 44411 |
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