| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 4467 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
| 2 | iffalse 4470 | . 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 1547 ifcif 4461 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-if 4462 |
| This theorem is referenced by: csbif 4519 rabsnif 4662 somincom 6091 fsuppmptif 9309 supsn 9383 infsn 9417 wemaplem2 9459 cantnflem1 9608 xrmaxeq 13129 xrmineq 13130 xaddpnf1 13176 xaddmnf1 13178 rexmul 13221 max0add 15270 sumz 15682 prod1 15907 1arithlem4 16895 xpscf 17527 mgm2nsgrplem2 18888 mgm2nsgrplem3 18889 dmdprdsplitlem 20012 fczpsrbag 21903 mplcoe1 22020 mplcoe3 22021 mplcoe5 22023 evlslem2 22062 mdet0 22596 mdetralt2 22599 mdetunilem9 22610 madurid 22634 decpmatid 22760 cnmpopc 24920 pcoval2 25008 pcorevlem 25018 itgz 25773 itgvallem3 25778 iblposlem 25784 iblss2 25798 itgss 25804 ditg0 25845 cnplimc 25879 limcco 25885 dvexp3 25970 ply1nzb 26113 plyeq0lem 26200 dgrcolem2 26264 plydivlem4 26287 radcnv0 26406 efrlim 26958 mumullem2 27168 lgsval2lem 27295 lgsdilem2 27321 fsuppind 43041 dgrsub2 43581 sqrtcval 44086 relexp1idm 44159 relexp0idm 44160 |
| Copyright terms: Public domain | W3C validator |