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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 8162 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) + 𝐶) = (𝐴 + (𝐵 + 𝐶))) | |
| 5 | 1, 2, 3, 4 | syl3anc 1273 | 1 ⊢ (𝜑 → ((𝐴 + 𝐵) + 𝐶) = (𝐴 + (𝐵 + 𝐶))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ∈ wcel 2202 (class class class)co 6018 ℂcc 8030 + caddc 8035 |
| 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 8134 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 |
| This theorem is referenced by: readdcan 8319 muladd11r 8335 cnegexlem1 8354 cnegex 8357 addcan 8359 addcan2 8360 negeu 8370 addsubass 8389 nppcan3 8403 muladd 8563 ltadd2 8599 add1p1 9394 div4p1lem1div2 9398 peano2z 9515 zaddcllempos 9516 zpnn0elfzo1 10454 exbtwnzlemstep 10508 rebtwn2zlemstep 10513 flhalf 10563 flqdiv 10584 binom2 10914 binom3 10920 bernneq 10923 omgadd 11066 ccatass 11186 cvg1nlemres 11547 recvguniqlem 11556 resqrexlemover 11572 bdtrilem 11801 bdtri 11802 bcxmas 12052 efsep 12254 efi4p 12280 efival 12295 divalglemnqt 12483 flodddiv4 12499 gcdaddm 12557 pcadd2 12916 4sqlem11 12976 limcimolemlt 15391 tangtx 15565 binom4 15706 2lgslem3c 15827 2lgslem3d 15828 |
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