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Mirrors > Home > ILE Home > Th. List > xaddid2 | GIF version |
Description: Extended real version of addid2 7997. (Contributed by Mario Carneiro, 20-Aug-2015.) |
Ref | Expression |
---|---|
xaddid2 | ⊢ (𝐴 ∈ ℝ* → (0 +𝑒 𝐴) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0xr 7907 | . . 3 ⊢ 0 ∈ ℝ* | |
2 | xaddcom 9747 | . . 3 ⊢ ((0 ∈ ℝ* ∧ 𝐴 ∈ ℝ*) → (0 +𝑒 𝐴) = (𝐴 +𝑒 0)) | |
3 | 1, 2 | mpan 421 | . 2 ⊢ (𝐴 ∈ ℝ* → (0 +𝑒 𝐴) = (𝐴 +𝑒 0)) |
4 | xaddid1 9748 | . 2 ⊢ (𝐴 ∈ ℝ* → (𝐴 +𝑒 0) = 𝐴) | |
5 | 3, 4 | eqtrd 2190 | 1 ⊢ (𝐴 ∈ ℝ* → (0 +𝑒 𝐴) = 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1335 ∈ wcel 2128 (class class class)co 5818 0cc0 7715 ℝ*cxr 7894 +𝑒 cxad 9659 |
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-in1 604 ax-in2 605 ax-io 699 ax-5 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-13 2130 ax-14 2131 ax-ext 2139 ax-sep 4082 ax-pow 4134 ax-pr 4168 ax-un 4392 ax-setind 4494 ax-cnex 7806 ax-resscn 7807 ax-1re 7809 ax-addrcl 7812 ax-addcom 7815 ax-0id 7823 ax-rnegex 7824 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1338 df-fal 1341 df-nf 1441 df-sb 1743 df-eu 2009 df-mo 2010 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-ne 2328 df-nel 2423 df-ral 2440 df-rex 2441 df-rab 2444 df-v 2714 df-sbc 2938 df-dif 3104 df-un 3106 df-in 3108 df-ss 3115 df-if 3506 df-pw 3545 df-sn 3566 df-pr 3567 df-op 3569 df-uni 3773 df-br 3966 df-opab 4026 df-id 4252 df-xp 4589 df-rel 4590 df-cnv 4591 df-co 4592 df-dm 4593 df-iota 5132 df-fun 5169 df-fv 5175 df-ov 5821 df-oprab 5822 df-mpo 5823 df-pnf 7897 df-mnf 7898 df-xr 7899 df-xadd 9662 |
This theorem is referenced by: xaddge0 9764 xsubge0 9767 xrbdtri 11155 |
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