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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 8253 | . 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 2203 (class class class)co 6049 ℂcc 8121 + caddc 8126 |
| 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 8225 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 |
| This theorem is referenced by: readdcan 8409 muladd11r 8425 cnegexlem1 8444 cnegex 8447 addcan 8449 addcan2 8450 negeu 8460 addsubass 8479 nppcan3 8493 muladd 8653 ltadd2 8689 add1p1 9484 div4p1lem1div2 9488 peano2z 9609 zaddcllempos 9610 zpnn0elfzo1 10549 exbtwnzlemstep 10603 rebtwn2zlemstep 10608 flhalf 10658 flqdiv 10679 binom2 11009 binom3 11015 bernneq 11018 omgadd 11161 ccatass 11289 cvg1nlemres 11663 recvguniqlem 11672 resqrexlemover 11688 bdtrilem 11917 bdtri 11918 bcxmas 12168 efsep 12370 efi4p 12396 efival 12411 divalglemnqt 12599 flodddiv4 12615 gcdaddm 12673 pcadd2 13032 4sqlem11 13092 limcimolemlt 15516 tangtx 15690 binom4 15831 2lgslem3c 15955 2lgslem3d 15956 qdiff 16820 |
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