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Mirrors > Home > ILE Home > Th. List > xnn0add4d | GIF version |
Description: Rearrangement of 4 terms in a sum for extended addition of extended nonnegative integers, analogous to xadd4d 9671. (Contributed by AV, 12-Dec-2020.) |
Ref | Expression |
---|---|
xnn0add4d.1 | ⊢ (𝜑 → 𝐴 ∈ ℕ0*) |
xnn0add4d.2 | ⊢ (𝜑 → 𝐵 ∈ ℕ0*) |
xnn0add4d.3 | ⊢ (𝜑 → 𝐶 ∈ ℕ0*) |
xnn0add4d.4 | ⊢ (𝜑 → 𝐷 ∈ ℕ0*) |
Ref | Expression |
---|---|
xnn0add4d | ⊢ (𝜑 → ((𝐴 +𝑒 𝐵) +𝑒 (𝐶 +𝑒 𝐷)) = ((𝐴 +𝑒 𝐶) +𝑒 (𝐵 +𝑒 𝐷))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xnn0add4d.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℕ0*) | |
2 | xnn0xrnemnf 9055 | . . 3 ⊢ (𝐴 ∈ ℕ0* → (𝐴 ∈ ℝ* ∧ 𝐴 ≠ -∞)) | |
3 | 1, 2 | syl 14 | . 2 ⊢ (𝜑 → (𝐴 ∈ ℝ* ∧ 𝐴 ≠ -∞)) |
4 | xnn0add4d.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℕ0*) | |
5 | xnn0xrnemnf 9055 | . . 3 ⊢ (𝐵 ∈ ℕ0* → (𝐵 ∈ ℝ* ∧ 𝐵 ≠ -∞)) | |
6 | 4, 5 | syl 14 | . 2 ⊢ (𝜑 → (𝐵 ∈ ℝ* ∧ 𝐵 ≠ -∞)) |
7 | xnn0add4d.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℕ0*) | |
8 | xnn0xrnemnf 9055 | . . 3 ⊢ (𝐶 ∈ ℕ0* → (𝐶 ∈ ℝ* ∧ 𝐶 ≠ -∞)) | |
9 | 7, 8 | syl 14 | . 2 ⊢ (𝜑 → (𝐶 ∈ ℝ* ∧ 𝐶 ≠ -∞)) |
10 | xnn0add4d.4 | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℕ0*) | |
11 | xnn0xrnemnf 9055 | . . 3 ⊢ (𝐷 ∈ ℕ0* → (𝐷 ∈ ℝ* ∧ 𝐷 ≠ -∞)) | |
12 | 10, 11 | syl 14 | . 2 ⊢ (𝜑 → (𝐷 ∈ ℝ* ∧ 𝐷 ≠ -∞)) |
13 | 3, 6, 9, 12 | xadd4d 9671 | 1 ⊢ (𝜑 → ((𝐴 +𝑒 𝐵) +𝑒 (𝐶 +𝑒 𝐷)) = ((𝐴 +𝑒 𝐶) +𝑒 (𝐵 +𝑒 𝐷))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = wceq 1331 ∈ wcel 1480 ≠ wne 2308 (class class class)co 5774 -∞cmnf 7801 ℝ*cxr 7802 ℕ0*cxnn0 9043 +𝑒 cxad 9560 |
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 603 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-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-setind 4452 ax-cnex 7714 ax-resscn 7715 ax-1re 7717 ax-addrcl 7720 ax-addcom 7723 ax-addass 7725 ax-rnegex 7732 |
This theorem depends on definitions: df-bi 116 df-dc 820 df-3or 963 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-nel 2404 df-ral 2421 df-rex 2422 df-rab 2425 df-v 2688 df-sbc 2910 df-csb 3004 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-if 3475 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-int 3772 df-iun 3815 df-br 3930 df-opab 3990 df-mpt 3991 df-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-res 4551 df-ima 4552 df-iota 5088 df-fun 5125 df-fn 5126 df-f 5127 df-fv 5131 df-ov 5777 df-oprab 5778 df-mpo 5779 df-1st 6038 df-2nd 6039 df-pnf 7805 df-mnf 7806 df-xr 7807 df-inn 8724 df-n0 8981 df-xnn0 9044 df-xadd 9563 |
This theorem is referenced by: (None) |
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