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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 4487 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4490 | . 2 ⊢ (¬ 𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 3 | 1, 2 | pm2.61i 182 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ifcif 4481 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-if 4482 |
| This theorem is referenced by: csbif 4539 rabsnif 4682 somincom 6099 fsuppmptif 9314 supsn 9388 infsn 9422 wemaplem2 9464 cantnflem1 9610 xrmaxeq 13106 xrmineq 13107 xaddpnf1 13153 xaddmnf1 13155 rexmul 13198 max0add 15245 sumz 15657 prod1 15879 1arithlem4 16866 xpscf 17498 mgm2nsgrplem2 18856 mgm2nsgrplem3 18857 dmdprdsplitlem 19980 fczpsrbag 21889 mplcoe1 22004 mplcoe3 22005 mplcoe5 22007 evlslem2 22046 mdet0 22562 mdetralt2 22565 mdetunilem9 22576 madurid 22600 decpmatid 22726 cnmpopc 24890 pcoval2 24984 pcorevlem 24994 itgz 25750 itgvallem3 25755 iblposlem 25761 iblss2 25775 itgss 25781 ditg0 25822 cnplimc 25856 limcco 25862 dvexp3 25950 ply1nzb 26096 plyeq0lem 26183 dgrcolem2 26248 plydivlem4 26272 radcnv0 26393 efrlim 26947 efrlimOLD 26948 mumullem2 27158 lgsval2lem 27286 lgsdilem2 27312 fsuppind 42937 dgrsub2 43481 sqrtcval 43986 relexp1idm 44059 relexp0idm 44060 |
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