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Mirrors > Home > ILE Home > Th. List > iftruei | GIF version |
Description: Inference associated with iftrue 3479. (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 3479 | . 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 1331 ifcif 3474 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-11 1484 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-if 3475 |
This theorem is referenced by: ctmlemr 6993 xnegpnf 9611 xnegmnf 9612 xaddpnf1 9629 xaddpnf2 9630 xaddmnf1 9631 xaddmnf2 9632 pnfaddmnf 9633 mnfaddpnf 9634 iseqf1olemqk 10267 exp0 10297 sumsnf 11178 lcm0val 11746 ennnfonelemj0 11914 ennnfonelem0 11918 peano3nninf 13201 |
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