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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 1533 ifcif 4467 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-ex 1777 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-if 4468 |
This theorem is referenced by: csbif 4522 rabsnif 4653 somincom 5989 fsuppmptif 8857 supsn 8930 infsn 8963 wemaplem2 9005 cantnflem1 9146 xrmaxeq 12566 xrmineq 12567 xaddpnf1 12613 xaddmnf1 12615 rexmul 12658 max0add 14664 sumz 15073 prod1 15292 1arithlem4 16256 xpscf 16832 mgm2nsgrplem2 18078 mgm2nsgrplem3 18079 dmdprdsplitlem 19153 fczpsrbag 20141 mplcoe1 20240 mplcoe3 20241 mplcoe5 20243 evlslem2 20286 mdet0 21209 mdetralt2 21212 mdetunilem9 21223 madurid 21247 decpmatid 21372 cnmpopc 23526 pcoval2 23614 pcorevlem 23624 itgz 24375 itgvallem3 24380 iblposlem 24386 iblss2 24400 itgss 24406 ditg0 24445 cnplimc 24479 limcco 24485 dvexp3 24569 ply1nzb 24710 plyeq0lem 24794 dgrcolem2 24858 plydivlem4 24879 radcnv0 24998 efrlim 25541 mumullem2 25751 lgsval2lem 25877 lgsdilem2 25903 dgrsub2 39728 relexp1idm 40052 relexp0idm 40053 |
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