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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 7306 xnegpnf 10062 xnegmnf 10063 xaddpnf1 10080 xaddpnf2 10081 xaddmnf1 10082 xaddmnf2 10083 pnfaddmnf 10084 mnfaddpnf 10085 iseqf1olemqk 10768 exp0 10804 swrd00g 11229 sumsnf 11969 prodsnf 12152 lcm0val 12636 ennnfonelemj0 13021 ennnfonelem0 13025 mulg0 13711 lgs0 15741 lgs2 15745 2lgs2 15830 1loopgrvd2fi 16155 peano3nninf 16609 dceqnconst 16664 |
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