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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 8145 | . 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 6010 ℂcc 8013 + caddc 8018 |
| 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 8117 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 |
| This theorem is referenced by: readdcan 8302 muladd11r 8318 cnegexlem1 8337 cnegex 8340 addcan 8342 addcan2 8343 negeu 8353 addsubass 8372 nppcan3 8386 muladd 8546 ltadd2 8582 add1p1 9377 div4p1lem1div2 9381 peano2z 9498 zaddcllempos 9499 zpnn0elfzo1 10431 exbtwnzlemstep 10484 rebtwn2zlemstep 10489 flhalf 10539 flqdiv 10560 binom2 10890 binom3 10896 bernneq 10899 omgadd 11041 ccatass 11161 cvg1nlemres 11517 recvguniqlem 11526 resqrexlemover 11542 bdtrilem 11771 bdtri 11772 bcxmas 12021 efsep 12223 efi4p 12249 efival 12264 divalglemnqt 12452 flodddiv4 12468 gcdaddm 12526 pcadd2 12885 4sqlem11 12945 limcimolemlt 15359 tangtx 15533 binom4 15674 2lgslem3c 15795 2lgslem3d 15796 |
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