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| Mirrors > Home > ILE Home > Th. List > iftruei | GIF version | ||
| Description: Inference associated with iftrue 3631. (Contributed by BJ, 7-Oct-2018.) |
| Ref | Expression |
|---|---|
| iftruei.1 | ⊢ 𝜑 |
| Ref | Expression |
|---|---|
| iftruei | ⊢ if(𝜑, 𝐴, 𝐵) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iftruei.1 | . 2 ⊢ 𝜑 | |
| 2 | iftrue 3631 | . 2 ⊢ (𝜑 → if(𝜑, 𝐴, 𝐵) = 𝐴) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ if(𝜑, 𝐴, 𝐵) = 𝐴 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 ifcif 3624 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-if 3625 |
| This theorem is referenced by: ctmlemr 7412 xnegpnf 10180 xnegmnf 10181 xaddpnf1 10198 xaddpnf2 10199 xaddmnf1 10200 xaddmnf2 10201 pnfaddmnf 10202 mnfaddpnf 10203 iseqf1olemqk 10893 exp0 10929 swrd00g 11366 sumsnf 12120 prodsnf 12303 lcm0val 12787 ennnfonelemj0 13236 ennnfonelem0 13240 mulg0 13878 lgs0 16012 lgs2 16016 2lgs2 16101 1loopgrvd2fi 16426 eupth2fi 16600 peano3nninf 16911 dceqnconst 16972 |
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