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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 184 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ifcif 4467 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-ex 1781 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-if 4468 |
This theorem is referenced by: csbif 4522 rabsnif 4659 somincom 5994 fsuppmptif 8863 supsn 8936 infsn 8969 wemaplem2 9011 cantnflem1 9152 xrmaxeq 12573 xrmineq 12574 xaddpnf1 12620 xaddmnf1 12622 rexmul 12665 max0add 14670 sumz 15079 prod1 15298 1arithlem4 16262 xpscf 16838 mgm2nsgrplem2 18084 mgm2nsgrplem3 18085 dmdprdsplitlem 19159 fczpsrbag 20147 mplcoe1 20246 mplcoe3 20247 mplcoe5 20249 evlslem2 20292 mdet0 21215 mdetralt2 21218 mdetunilem9 21229 madurid 21253 decpmatid 21378 cnmpopc 23532 pcoval2 23620 pcorevlem 23630 itgz 24381 itgvallem3 24386 iblposlem 24392 iblss2 24406 itgss 24412 ditg0 24451 cnplimc 24485 limcco 24491 dvexp3 24575 ply1nzb 24716 plyeq0lem 24800 dgrcolem2 24864 plydivlem4 24885 radcnv0 25004 efrlim 25547 mumullem2 25757 lgsval2lem 25883 lgsdilem2 25909 dgrsub2 39755 relexp1idm 40079 relexp0idm 40080 |
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