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| Mirrors > Home > ILE Home > Th. List > addassd | GIF version | ||
| Description: Associative law for addition. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| addcld.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| addcld.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| addassd.3 | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| Ref | Expression |
|---|---|
| addassd | ⊢ (𝜑 → ((𝐴 + 𝐵) + 𝐶) = (𝐴 + (𝐵 + 𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | addcld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | addcld.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 3 | addassd.3 | . 2 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 4 | addass 8155 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) + 𝐶) = (𝐴 + (𝐵 + 𝐶))) | |
| 5 | 1, 2, 3, 4 | syl3anc 1271 | 1 ⊢ (𝜑 → ((𝐴 + 𝐵) + 𝐶) = (𝐴 + (𝐵 + 𝐶))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∈ wcel 2200 (class class class)co 6013 ℂcc 8023 + caddc 8028 |
| 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-addass 8127 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 |
| This theorem is referenced by: readdcan 8312 muladd11r 8328 cnegexlem1 8347 cnegex 8350 addcan 8352 addcan2 8353 negeu 8363 addsubass 8382 nppcan3 8396 muladd 8556 ltadd2 8592 add1p1 9387 div4p1lem1div2 9391 peano2z 9508 zaddcllempos 9509 zpnn0elfzo1 10446 exbtwnzlemstep 10500 rebtwn2zlemstep 10505 flhalf 10555 flqdiv 10576 binom2 10906 binom3 10912 bernneq 10915 omgadd 11058 ccatass 11178 cvg1nlemres 11539 recvguniqlem 11548 resqrexlemover 11564 bdtrilem 11793 bdtri 11794 bcxmas 12043 efsep 12245 efi4p 12271 efival 12286 divalglemnqt 12474 flodddiv4 12490 gcdaddm 12548 pcadd2 12907 4sqlem11 12967 limcimolemlt 15381 tangtx 15555 binom4 15696 2lgslem3c 15817 2lgslem3d 15818 |
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