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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 8262 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) + 𝐶) = (𝐴 + (𝐵 + 𝐶))) | |
| 5 | 1, 2, 3, 4 | syl3anc 1274 | 1 ⊢ (𝜑 → ((𝐴 + 𝐵) + 𝐶) = (𝐴 + (𝐵 + 𝐶))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∈ wcel 2205 (class class class)co 6052 ℂcc 8130 + caddc 8135 |
| 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 8234 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 |
| This theorem is referenced by: readdcan 8418 muladd11r 8434 cnegexlem1 8453 cnegex 8456 addcan 8458 addcan2 8459 negeu 8469 addsubass 8488 nppcan3 8502 muladd 8662 ltadd2 8698 add1p1 9493 div4p1lem1div2 9497 peano2z 9618 zaddcllempos 9619 zpnn0elfzo1 10560 exbtwnzlemstep 10614 rebtwn2zlemstep 10619 flhalf 10669 flqdiv 10690 binom2 11020 binom3 11026 bernneq 11030 omgadd 11174 ccatass 11304 cvg1nlemres 11678 recvguniqlem 11687 resqrexlemover 11703 bdtrilem 11932 bdtri 11933 bcxmas 12183 efsep 12385 efi4p 12411 efival 12426 divalglemnqt 12614 flodddiv4 12630 gcdaddm 12688 pcadd2 13047 4sqlem11 13107 limcimolemlt 15578 tangtx 15752 binom4 15893 2lgslem3c 16017 2lgslem3d 16018 qdiff 16882 |
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