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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 4486 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4489 | . 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 4480 |
| 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 4481 |
| This theorem is referenced by: csbif 4538 rabsnif 4681 somincom 6092 fsuppmptif 9306 supsn 9380 infsn 9414 wemaplem2 9456 cantnflem1 9602 xrmaxeq 13098 xrmineq 13099 xaddpnf1 13145 xaddmnf1 13147 rexmul 13190 max0add 15237 sumz 15649 prod1 15871 1arithlem4 16858 xpscf 17490 mgm2nsgrplem2 18848 mgm2nsgrplem3 18849 dmdprdsplitlem 19972 fczpsrbag 21881 mplcoe1 21996 mplcoe3 21997 mplcoe5 21999 evlslem2 22038 mdet0 22554 mdetralt2 22557 mdetunilem9 22568 madurid 22592 decpmatid 22718 cnmpopc 24882 pcoval2 24976 pcorevlem 24986 itgz 25742 itgvallem3 25747 iblposlem 25753 iblss2 25767 itgss 25773 ditg0 25814 cnplimc 25848 limcco 25854 dvexp3 25942 ply1nzb 26088 plyeq0lem 26175 dgrcolem2 26240 plydivlem4 26264 radcnv0 26385 efrlim 26939 efrlimOLD 26940 mumullem2 27150 lgsval2lem 27278 lgsdilem2 27304 fsuppind 42869 dgrsub2 43413 sqrtcval 43918 relexp1idm 43991 relexp0idm 43992 |
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