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Mirrors > Home > ILE Home > Th. List > iftrued | GIF version |
Description: Value of the conditional operator when its first argument is true. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
iftrued.1 | ⊢ (𝜑 → 𝜒) |
Ref | Expression |
---|---|
iftrued | ⊢ (𝜑 → if(𝜒, 𝐴, 𝐵) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iftrued.1 | . 2 ⊢ (𝜑 → 𝜒) | |
2 | iftrue 3474 | . 2 ⊢ (𝜒 → if(𝜒, 𝐴, 𝐵) = 𝐴) | |
3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → if(𝜒, 𝐴, 𝐵) = 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1331 ifcif 3469 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-11 1484 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-if 3470 |
This theorem is referenced by: eqifdc 3501 mposnif 5858 fimax2gtrilemstep 6787 updjudhcoinlf 6958 omp1eomlem 6972 difinfsnlem 6977 ctssdclemn0 6988 ctssdc 6991 enumctlemm 6992 fodju0 7012 iseqf1olemnab 10254 iseqf1olemab 10255 iseqf1olemqk 10260 iseqf1olemfvp 10263 seq3f1olemqsumkj 10264 seq3f1olemqsum 10266 seq3f1oleml 10269 seq3f1o 10270 fser0const 10282 expnnval 10289 2zsupmax 10990 xrmaxifle 11008 xrmaxiflemab 11009 xrmaxiflemlub 11010 xrmaxiflemcom 11011 summodclem3 11142 summodclem2a 11143 isum 11147 fsum3 11149 isumss 11153 fsumcl2lem 11160 fsumadd 11168 fsummulc2 11210 cvgratz 11294 ef0lem 11355 gcdval 11637 ennnfonelemss 11912 ennnfonelemkh 11914 ennnfonelemhf1o 11915 ressid2 12007 subctctexmid 13185 nninfalllemn 13191 nninfsellemeq 13199 nninfsellemeqinf 13201 nninffeq 13205 |
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