| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > subdi | Structured version Visualization version GIF version | ||
| Description: Distribution of multiplication over subtraction. Theorem I.5 of [Apostol] p. 18. (Contributed by NM, 18-Nov-2004.) |
| Ref | Expression |
|---|---|
| subdi | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · (𝐵 − 𝐶)) = ((𝐴 · 𝐵) − (𝐴 · 𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp1 1136 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → 𝐴 ∈ ℂ) | |
| 2 | simp3 1138 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → 𝐶 ∈ ℂ) | |
| 3 | subcl 11368 | . . . . . 6 ⊢ ((𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐵 − 𝐶) ∈ ℂ) | |
| 4 | 3 | 3adant1 1130 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐵 − 𝐶) ∈ ℂ) |
| 5 | 1, 2, 4 | adddid 11145 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · (𝐶 + (𝐵 − 𝐶))) = ((𝐴 · 𝐶) + (𝐴 · (𝐵 − 𝐶)))) |
| 6 | pncan3 11377 | . . . . . . 7 ⊢ ((𝐶 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐶 + (𝐵 − 𝐶)) = 𝐵) | |
| 7 | 6 | ancoms 458 | . . . . . 6 ⊢ ((𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐶 + (𝐵 − 𝐶)) = 𝐵) |
| 8 | 7 | 3adant1 1130 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐶 + (𝐵 − 𝐶)) = 𝐵) |
| 9 | 8 | oveq2d 7370 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · (𝐶 + (𝐵 − 𝐶))) = (𝐴 · 𝐵)) |
| 10 | 5, 9 | eqtr3d 2770 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 · 𝐶) + (𝐴 · (𝐵 − 𝐶))) = (𝐴 · 𝐵)) |
| 11 | mulcl 11099 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · 𝐵) ∈ ℂ) | |
| 12 | 11 | 3adant3 1132 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · 𝐵) ∈ ℂ) |
| 13 | mulcl 11099 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · 𝐶) ∈ ℂ) | |
| 14 | 13 | 3adant2 1131 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · 𝐶) ∈ ℂ) |
| 15 | mulcl 11099 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 − 𝐶) ∈ ℂ) → (𝐴 · (𝐵 − 𝐶)) ∈ ℂ) | |
| 16 | 3, 15 | sylan2 593 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ)) → (𝐴 · (𝐵 − 𝐶)) ∈ ℂ) |
| 17 | 16 | 3impb 1114 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · (𝐵 − 𝐶)) ∈ ℂ) |
| 18 | 12, 14, 17 | subaddd 11499 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (((𝐴 · 𝐵) − (𝐴 · 𝐶)) = (𝐴 · (𝐵 − 𝐶)) ↔ ((𝐴 · 𝐶) + (𝐴 · (𝐵 − 𝐶))) = (𝐴 · 𝐵))) |
| 19 | 10, 18 | mpbird 257 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 · 𝐵) − (𝐴 · 𝐶)) = (𝐴 · (𝐵 − 𝐶))) |
| 20 | 19 | eqcomd 2739 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · (𝐵 − 𝐶)) = ((𝐴 · 𝐵) − (𝐴 · 𝐶))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 (class class class)co 7354 ℂcc 11013 + caddc 11018 · cmul 11020 − cmin 11353 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7676 ax-resscn 11072 ax-1cn 11073 ax-icn 11074 ax-addcl 11075 ax-addrcl 11076 ax-mulcl 11077 ax-mulrcl 11078 ax-mulcom 11079 ax-addass 11080 ax-mulass 11081 ax-distr 11082 ax-i2m1 11083 ax-1ne0 11084 ax-1rid 11085 ax-rnegex 11086 ax-rrecex 11087 ax-cnre 11088 ax-pre-lttri 11089 ax-pre-lttrn 11090 ax-pre-ltadd 11091 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-nul 4283 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4861 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5516 df-po 5529 df-so 5530 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7311 df-ov 7357 df-oprab 7358 df-mpo 7359 df-er 8630 df-en 8878 df-dom 8879 df-sdom 8880 df-pnf 11157 df-mnf 11158 df-ltxr 11160 df-sub 11355 |
| This theorem is referenced by: subdir 11560 subdii 11575 subdid 11582 mulcan1g 11779 expubnd 14089 subsq 14121 bpoly3 15969 cos01bnd 16099 modmulconst 16203 odd2np1 16256 omoe 16279 omeo 16281 phiprmpw 16691 pythagtriplem14 16744 plydiveu 26236 quotcan 26247 basellem9 27029 chtublem 27152 bposlem9 27233 ax5seglem1 28910 ax5seglem2 28911 axpaschlem 28922 axcontlem2 28947 axcontlem4 28949 axcontlem7 28952 axcontlem8 28953 ipval2 30691 ftc1anclem6 37761 pellexlem6 42954 |
| Copyright terms: Public domain | W3C validator |