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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 4489 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4492 | . 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 1563 ifcif 4483 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-if 4484 |
| This theorem is referenced by: csbif 4541 rabsnif 4685 somincom 6125 fsuppmptif 9347 supsn 9421 infsn 9455 wemaplem2 9497 cantnflem1 9646 xrmaxeq 13196 xrmineq 13197 xaddpnf1 13243 xaddmnf1 13245 rexmul 13288 max0add 15351 sumz 15763 prod1 15988 1arithlem4 16976 xpscf 17609 mgm2nsgrplem2 18971 mgm2nsgrplem3 18972 dmdprdsplitlem 20100 fczpsrbag 22031 mplcoe1 22148 mplcoe3 22149 mplcoe5 22151 evlslem2 22190 mdet0 22724 mdetralt2 22727 mdetunilem9 22738 madurid 22762 decpmatid 22888 cnmpopc 25048 pcoval2 25136 pcorevlem 25146 itgz 25901 itgvallem3 25906 iblposlem 25912 iblss2 25926 itgss 25932 ditg0 25973 cnplimc 26007 limcco 26013 dvexp3 26098 ply1nzb 26241 plyeq0lem 26328 dgrcolem2 26392 plydivlem4 26418 radcnv0 26537 efrlim 27092 mumullem2 27302 lgsval2lem 27429 lgsdilem2 27455 fsuppind 43184 dgrsub2 43724 sqrtcval 44229 relexp1idm 44302 relexp0idm 44303 |
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