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| Mirrors > Home > ILE Home > Th. List > iftruei | GIF version | ||
| Description: Inference associated with iftrue 3608. (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 3608 | . 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 1395 ifcif 3603 |
| 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 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-11 1552 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-if 3604 |
| This theorem is referenced by: ctmlemr 7298 xnegpnf 10053 xnegmnf 10054 xaddpnf1 10071 xaddpnf2 10072 xaddmnf1 10073 xaddmnf2 10074 pnfaddmnf 10075 mnfaddpnf 10076 iseqf1olemqk 10759 exp0 10795 swrd00g 11220 sumsnf 11960 prodsnf 12143 lcm0val 12627 ennnfonelemj0 13012 ennnfonelem0 13016 mulg0 13702 lgs0 15732 lgs2 15736 2lgs2 15821 1loopgrvd2fi 16111 peano3nninf 16545 dceqnconst 16600 |
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