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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 4473 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4476 | . 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 4467 |
| 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 4468 |
| This theorem is referenced by: csbif 4525 rabsnif 4668 somincom 6089 fsuppmptif 9303 supsn 9377 infsn 9411 wemaplem2 9453 cantnflem1 9599 xrmaxeq 13120 xrmineq 13121 xaddpnf1 13167 xaddmnf1 13169 rexmul 13212 max0add 15261 sumz 15673 prod1 15898 1arithlem4 16886 xpscf 17518 mgm2nsgrplem2 18879 mgm2nsgrplem3 18880 dmdprdsplitlem 20003 fczpsrbag 21909 mplcoe1 22024 mplcoe3 22025 mplcoe5 22027 evlslem2 22066 mdet0 22580 mdetralt2 22583 mdetunilem9 22594 madurid 22618 decpmatid 22744 cnmpopc 24904 pcoval2 24992 pcorevlem 25002 itgz 25757 itgvallem3 25762 iblposlem 25768 iblss2 25782 itgss 25788 ditg0 25829 cnplimc 25863 limcco 25869 dvexp3 25954 ply1nzb 26100 plyeq0lem 26187 dgrcolem2 26251 plydivlem4 26275 radcnv0 26396 efrlim 26950 efrlimOLD 26951 mumullem2 27161 lgsval2lem 27289 lgsdilem2 27315 fsuppind 43034 dgrsub2 43578 sqrtcval 44083 relexp1idm 44156 relexp0idm 44157 |
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