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| Mirrors > Home > ILE Home > Th. List > iftruei | GIF version | ||
| Description: Inference associated with iftrue 3627. (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 3627 | . 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 3620 |
| 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 2214 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-if 3621 |
| This theorem is referenced by: ctmlemr 7399 xnegpnf 10161 xnegmnf 10162 xaddpnf1 10179 xaddpnf2 10180 xaddmnf1 10181 xaddmnf2 10182 pnfaddmnf 10183 mnfaddpnf 10184 iseqf1olemqk 10869 exp0 10905 swrd00g 11341 sumsnf 12095 prodsnf 12278 lcm0val 12762 ennnfonelemj0 13152 ennnfonelem0 13156 mulg0 13842 lgs0 15886 lgs2 15890 2lgs2 15975 1loopgrvd2fi 16300 eupth2fi 16474 peano3nninf 16785 dceqnconst 16846 |
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