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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 4042 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
2 | iffalse 4045 | . 2 ⊢ (¬ 𝜑 → if(𝜑, 𝐴, 𝐴) = 𝐴) | |
3 | 1, 2 | pm2.61i 175 | 1 ⊢ if(𝜑, 𝐴, 𝐴) = 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1475 ifcif 4036 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-if 4037 |
This theorem is referenced by: csbif 4088 rabsnif 4202 somincom 5449 fsuppmptif 8188 supsn 8261 infsn 8293 wemaplem2 8335 cantnflem1 8469 xrmaxeq 11884 xrmineq 11885 xaddpnf1 11931 xaddmnf1 11933 rexmul 11973 max0add 13898 sumz 14300 prod1 14513 1arithlem4 15468 xpscf 16049 mgm2nsgrplem2 17229 mgm2nsgrplem3 17230 dmdprdsplitlem 18259 fczpsrbag 19188 mplcoe1 19286 mplcoe3 19287 mplcoe5 19289 evlslem2 19333 mdet0 20231 mdetralt2 20234 mdetunilem9 20245 madurid 20269 decpmatid 20394 cnmpt2pc 22535 pcoval2 22624 pcorevlem 22634 itgz 23353 itgvallem3 23358 iblposlem 23364 iblss2 23378 itgss 23384 ditg0 23423 cnplimc 23457 limcco 23463 dvexp3 23545 ply1nzb 23686 plyeq0lem 23770 dgrcolem2 23834 plydivlem4 23855 radcnv0 23974 efrlim 24496 mumullem2 24706 lgsval2lem 24832 lgsdilem2 24858 dgrsub2 36724 relexp1idm 37025 relexp0idm 37026 |
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