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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 8129 | . 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 6001 ℂcc 7997 + caddc 8002 |
| 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 8101 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 |
| This theorem is referenced by: readdcan 8286 muladd11r 8302 cnegexlem1 8321 cnegex 8324 addcan 8326 addcan2 8327 negeu 8337 addsubass 8356 nppcan3 8370 muladd 8530 ltadd2 8566 add1p1 9361 div4p1lem1div2 9365 peano2z 9482 zaddcllempos 9483 zpnn0elfzo1 10414 exbtwnzlemstep 10467 rebtwn2zlemstep 10472 flhalf 10522 flqdiv 10543 binom2 10873 binom3 10879 bernneq 10882 omgadd 11024 ccatass 11143 cvg1nlemres 11496 recvguniqlem 11505 resqrexlemover 11521 bdtrilem 11750 bdtri 11751 bcxmas 12000 efsep 12202 efi4p 12228 efival 12243 divalglemnqt 12431 flodddiv4 12447 gcdaddm 12505 pcadd2 12864 4sqlem11 12924 limcimolemlt 15338 tangtx 15512 binom4 15653 2lgslem3c 15774 2lgslem3d 15775 |
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