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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 8167 | . 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 2201 (class class class)co 6023 ℂcc 8035 + caddc 8040 |
| 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 8139 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 |
| This theorem is referenced by: readdcan 8324 muladd11r 8340 cnegexlem1 8359 cnegex 8362 addcan 8364 addcan2 8365 negeu 8375 addsubass 8394 nppcan3 8408 muladd 8568 ltadd2 8604 add1p1 9399 div4p1lem1div2 9403 peano2z 9520 zaddcllempos 9521 zpnn0elfzo1 10459 exbtwnzlemstep 10513 rebtwn2zlemstep 10518 flhalf 10568 flqdiv 10589 binom2 10919 binom3 10925 bernneq 10928 omgadd 11071 ccatass 11194 cvg1nlemres 11568 recvguniqlem 11577 resqrexlemover 11593 bdtrilem 11822 bdtri 11823 bcxmas 12073 efsep 12275 efi4p 12301 efival 12316 divalglemnqt 12504 flodddiv4 12520 gcdaddm 12578 pcadd2 12937 4sqlem11 12997 limcimolemlt 15417 tangtx 15591 binom4 15732 2lgslem3c 15853 2lgslem3d 15854 qdiff 16720 |
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