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| Mirrors > Home > MPE Home > Th. List > dvdscmul | Structured version Visualization version GIF version | ||
| Description: Multiplication by a constant maintains the divides relation. Theorem 1.1(d) in [ApostolNT] p. 14 (multiplication property of the divides relation). (Contributed by Paul Chapman, 21-Mar-2011.) |
| Ref | Expression |
|---|---|
| dvdscmul | ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑀 ∥ 𝑁 → (𝐾 · 𝑀) ∥ (𝐾 · 𝑁))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3simpc 1150 | . . 3 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ)) | |
| 2 | zmulcl 12518 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝐾 · 𝑀) ∈ ℤ) | |
| 3 | 2 | 3adant3 1132 | . . . 4 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 · 𝑀) ∈ ℤ) |
| 4 | zmulcl 12518 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 · 𝑁) ∈ ℤ) | |
| 5 | 4 | 3adant2 1131 | . . . 4 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 · 𝑁) ∈ ℤ) |
| 6 | 3, 5 | jca 511 | . . 3 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 · 𝑀) ∈ ℤ ∧ (𝐾 · 𝑁) ∈ ℤ)) |
| 7 | simpr 484 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → 𝑥 ∈ ℤ) | |
| 8 | zcn 12470 | . . . . . . . . 9 ⊢ (𝑥 ∈ ℤ → 𝑥 ∈ ℂ) | |
| 9 | zcn 12470 | . . . . . . . . 9 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℂ) | |
| 10 | zcn 12470 | . . . . . . . . 9 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
| 11 | mul12 11275 | . . . . . . . . 9 ⊢ ((𝑥 ∈ ℂ ∧ 𝐾 ∈ ℂ ∧ 𝑀 ∈ ℂ) → (𝑥 · (𝐾 · 𝑀)) = (𝐾 · (𝑥 · 𝑀))) | |
| 12 | 8, 9, 10, 11 | syl3an 1160 | . . . . . . . 8 ⊢ ((𝑥 ∈ ℤ ∧ 𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝑥 · (𝐾 · 𝑀)) = (𝐾 · (𝑥 · 𝑀))) |
| 13 | 12 | 3coml 1127 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑥 ∈ ℤ) → (𝑥 · (𝐾 · 𝑀)) = (𝐾 · (𝑥 · 𝑀))) |
| 14 | 13 | 3expa 1118 | . . . . . 6 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → (𝑥 · (𝐾 · 𝑀)) = (𝐾 · (𝑥 · 𝑀))) |
| 15 | 14 | 3adantl3 1169 | . . . . 5 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → (𝑥 · (𝐾 · 𝑀)) = (𝐾 · (𝑥 · 𝑀))) |
| 16 | oveq2 7354 | . . . . 5 ⊢ ((𝑥 · 𝑀) = 𝑁 → (𝐾 · (𝑥 · 𝑀)) = (𝐾 · 𝑁)) | |
| 17 | 15, 16 | sylan9eq 2786 | . . . 4 ⊢ ((((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) ∧ (𝑥 · 𝑀) = 𝑁) → (𝑥 · (𝐾 · 𝑀)) = (𝐾 · 𝑁)) |
| 18 | 17 | ex 412 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → ((𝑥 · 𝑀) = 𝑁 → (𝑥 · (𝐾 · 𝑀)) = (𝐾 · 𝑁))) |
| 19 | 1, 6, 7, 18 | dvds1lem 16175 | . 2 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∥ 𝑁 → (𝐾 · 𝑀) ∥ (𝐾 · 𝑁))) |
| 20 | 19 | 3coml 1127 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑀 ∥ 𝑁 → (𝐾 · 𝑀) ∥ (𝐾 · 𝑁))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2111 class class class wbr 5091 (class class class)co 7346 ℂcc 11001 · cmul 11008 ℤcz 12465 ∥ cdvds 16160 |
| 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 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5234 ax-nul 5244 ax-pow 5303 ax-pr 5370 ax-un 7668 ax-resscn 11060 ax-1cn 11061 ax-icn 11062 ax-addcl 11063 ax-addrcl 11064 ax-mulcl 11065 ax-mulrcl 11066 ax-mulcom 11067 ax-addass 11068 ax-mulass 11069 ax-distr 11070 ax-i2m1 11071 ax-1ne0 11072 ax-1rid 11073 ax-rnegex 11074 ax-rrecex 11075 ax-cnre 11076 ax-pre-lttri 11077 ax-pre-lttrn 11078 ax-pre-ltadd 11079 |
| 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 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4476 df-pw 4552 df-sn 4577 df-pr 4579 df-op 4583 df-uni 4860 df-iun 4943 df-br 5092 df-opab 5154 df-mpt 5173 df-tr 5199 df-id 5511 df-eprel 5516 df-po 5524 df-so 5525 df-fr 5569 df-we 5571 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-om 7797 df-2nd 7922 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-er 8622 df-en 8870 df-dom 8871 df-sdom 8872 df-pnf 11145 df-mnf 11146 df-ltxr 11148 df-sub 11343 df-neg 11344 df-nn 12123 df-n0 12379 df-z 12466 df-dvds 16161 |
| This theorem is referenced by: dvdscmulr 16192 mulgcd 16456 dvdsmulgcd 16464 rpmulgcd2 16564 pcprendvds2 16750 pcpremul 16752 prmreclem1 16825 sylow3lem4 19540 ablfacrp2 19979 mpodvdsmulf1o 27129 dvdsmulf1o 27131 jm2.27a 43037 jm2.27c 43039 |
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