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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 4480 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4483 | . 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 1554 ifcif 4474 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1809 ax-4 1823 ax-5 1924 ax-6 1981 ax-7 2022 ax-8 2138 ax-9 2146 ax-ext 2728 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-ex 1794 df-sb 2085 df-clab 2735 df-cleq 2748 df-clel 2831 df-if 4475 |
| This theorem is referenced by: csbif 4532 rabsnif 4676 somincom 6111 fsuppmptif 9335 supsn 9409 infsn 9443 wemaplem2 9485 cantnflem1 9634 xrmaxeq 13172 xrmineq 13173 xaddpnf1 13219 xaddmnf1 13221 rexmul 13264 max0add 15313 sumz 15725 prod1 15950 1arithlem4 16938 xpscf 17571 mgm2nsgrplem2 18932 mgm2nsgrplem3 18933 dmdprdsplitlem 20055 fczpsrbag 21946 mplcoe1 22063 mplcoe3 22064 mplcoe5 22066 evlslem2 22105 mdet0 22639 mdetralt2 22642 mdetunilem9 22653 madurid 22677 decpmatid 22803 cnmpopc 24963 pcoval2 25051 pcorevlem 25061 itgz 25816 itgvallem3 25821 iblposlem 25827 iblss2 25841 itgss 25847 ditg0 25888 cnplimc 25922 limcco 25928 dvexp3 26013 ply1nzb 26156 plyeq0lem 26243 dgrcolem2 26307 plydivlem4 26330 radcnv0 26449 efrlim 27004 mumullem2 27214 lgsval2lem 27341 lgsdilem2 27367 fsuppind 43120 dgrsub2 43660 sqrtcval 44165 relexp1idm 44238 relexp0idm 44239 |
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