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| Mirrors > Home > ILE Home > Th. List > iftruei | GIF version | ||
| Description: Inference associated with iftrue 3642. (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 3642 | . 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 1402 ifcif 3635 |
| 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 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-if 3636 |
| This theorem is referenced by: ctmlemr 7438 xnegpnf 10209 xnegmnf 10210 xaddpnf1 10227 xaddpnf2 10228 xaddmnf1 10229 xaddmnf2 10230 pnfaddmnf 10231 mnfaddpnf 10232 iseqf1olemqk 10922 exp0 10958 swrd00g 11399 sumsnf 12154 prodsnf 12337 lcm0val 12821 ennnfonelemj0 13270 ennnfonelem0 13274 mulg0 13905 lgs0 16046 lgs2 16050 2lgs2 16135 1loopgrvd2fi 16460 eupth2fi 16634 peano3nninf 16955 dceqnconst 17015 |
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