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| Mirrors > Home > ILE Home > Th. List > iftruei | GIF version | ||
| Description: Inference associated with iftrue 3610. (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 3610 | . 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 1397 ifcif 3605 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-11 1554 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-if 3606 |
| This theorem is referenced by: ctmlemr 7307 xnegpnf 10063 xnegmnf 10064 xaddpnf1 10081 xaddpnf2 10082 xaddmnf1 10083 xaddmnf2 10084 pnfaddmnf 10085 mnfaddpnf 10086 iseqf1olemqk 10770 exp0 10806 swrd00g 11234 sumsnf 11975 prodsnf 12158 lcm0val 12642 ennnfonelemj0 13027 ennnfonelem0 13031 mulg0 13717 lgs0 15748 lgs2 15752 2lgs2 15837 1loopgrvd2fi 16162 eupth2fi 16336 peano3nninf 16635 dceqnconst 16691 |
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