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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 4092 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
2 | iffalse 4095 | . 2 ⊢ (¬ 𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
3 | 1, 2 | pm2.61i 176 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1483 ifcif 4086 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-if 4087 |
This theorem is referenced by: csbif 4138 rabsnif 4258 somincom 5530 fsuppmptif 8305 supsn 8378 infsn 8410 wemaplem2 8452 cantnflem1 8586 xrmaxeq 12010 xrmineq 12011 xaddpnf1 12057 xaddmnf1 12059 rexmul 12101 max0add 14050 sumz 14453 prod1 14674 1arithlem4 15630 xpscf 16226 mgm2nsgrplem2 17406 mgm2nsgrplem3 17407 dmdprdsplitlem 18436 fczpsrbag 19367 mplcoe1 19465 mplcoe3 19466 mplcoe5 19468 evlslem2 19512 mdet0 20412 mdetralt2 20415 mdetunilem9 20426 madurid 20450 decpmatid 20575 cnmpt2pc 22727 pcoval2 22816 pcorevlem 22826 itgz 23547 itgvallem3 23552 iblposlem 23558 iblss2 23572 itgss 23578 ditg0 23617 cnplimc 23651 limcco 23657 dvexp3 23741 ply1nzb 23882 plyeq0lem 23966 dgrcolem2 24030 plydivlem4 24051 radcnv0 24170 efrlim 24696 mumullem2 24906 lgsval2lem 25032 lgsdilem2 25058 dgrsub2 37705 relexp1idm 38006 relexp0idm 38007 |
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