| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > dvdstr | Structured version Visualization version GIF version | ||
| Description: The divides relation is transitive. Theorem 1.1(b) in [ApostolNT] p. 14 (transitive property of the divides relation). (Contributed by Paul Chapman, 21-Mar-2011.) |
| Ref | Expression |
|---|---|
| dvdstr | ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ 𝑀 ∧ 𝑀 ∥ 𝑁) → 𝐾 ∥ 𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3simpa 1166 | . 2 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ)) | |
| 2 | 3simpc 1168 | . 2 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ)) | |
| 3 | 3simpb 1167 | . 2 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ)) | |
| 4 | zmulcl 12654 | . . 3 ⊢ ((𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ) → (𝑥 · 𝑦) ∈ ℤ) | |
| 5 | 4 | adantl 487 | . 2 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ)) → (𝑥 · 𝑦) ∈ ℤ) |
| 6 | oveq2 7424 | . . . . 5 ⊢ ((𝑥 · 𝐾) = 𝑀 → (𝑦 · (𝑥 · 𝐾)) = (𝑦 · 𝑀)) | |
| 7 | 6 | adantr 486 | . . . 4 ⊢ (((𝑥 · 𝐾) = 𝑀 ∧ (𝑦 · 𝑀) = 𝑁) → (𝑦 · (𝑥 · 𝐾)) = (𝑦 · 𝑀)) |
| 8 | eqeq2 2777 | . . . . 5 ⊢ ((𝑦 · 𝑀) = 𝑁 → ((𝑦 · (𝑥 · 𝐾)) = (𝑦 · 𝑀) ↔ (𝑦 · (𝑥 · 𝐾)) = 𝑁)) | |
| 9 | 8 | adantl 487 | . . . 4 ⊢ (((𝑥 · 𝐾) = 𝑀 ∧ (𝑦 · 𝑀) = 𝑁) → ((𝑦 · (𝑥 · 𝐾)) = (𝑦 · 𝑀) ↔ (𝑦 · (𝑥 · 𝐾)) = 𝑁)) |
| 10 | 7, 9 | mpbid 235 | . . 3 ⊢ (((𝑥 · 𝐾) = 𝑀 ∧ (𝑦 · 𝑀) = 𝑁) → (𝑦 · (𝑥 · 𝐾)) = 𝑁) |
| 11 | zcn 12607 | . . . . . . . 8 ⊢ (𝑥 ∈ ℤ → 𝑥 ∈ ℂ) | |
| 12 | zcn 12607 | . . . . . . . 8 ⊢ (𝑦 ∈ ℤ → 𝑦 ∈ ℂ) | |
| 13 | zcn 12607 | . . . . . . . 8 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℂ) | |
| 14 | mulass 11199 | . . . . . . . . 9 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ ∧ 𝐾 ∈ ℂ) → ((𝑥 · 𝑦) · 𝐾) = (𝑥 · (𝑦 · 𝐾))) | |
| 15 | mul12 11386 | . . . . . . . . 9 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ ∧ 𝐾 ∈ ℂ) → (𝑥 · (𝑦 · 𝐾)) = (𝑦 · (𝑥 · 𝐾))) | |
| 16 | 14, 15 | eqtrd 2800 | . . . . . . . 8 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ ∧ 𝐾 ∈ ℂ) → ((𝑥 · 𝑦) · 𝐾) = (𝑦 · (𝑥 · 𝐾))) |
| 17 | 11, 12, 13, 16 | syl3an 1178 | . . . . . . 7 ⊢ ((𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ ∧ 𝐾 ∈ ℤ) → ((𝑥 · 𝑦) · 𝐾) = (𝑦 · (𝑥 · 𝐾))) |
| 18 | 17 | 3comr 1143 | . . . . . 6 ⊢ ((𝐾 ∈ ℤ ∧ 𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ) → ((𝑥 · 𝑦) · 𝐾) = (𝑦 · (𝑥 · 𝐾))) |
| 19 | 18 | 3expb 1138 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ (𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ)) → ((𝑥 · 𝑦) · 𝐾) = (𝑦 · (𝑥 · 𝐾))) |
| 20 | 19 | 3ad2antl1 1204 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ)) → ((𝑥 · 𝑦) · 𝐾) = (𝑦 · (𝑥 · 𝐾))) |
| 21 | 20 | eqeq1d 2767 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ)) → (((𝑥 · 𝑦) · 𝐾) = 𝑁 ↔ (𝑦 · (𝑥 · 𝐾)) = 𝑁)) |
| 22 | 10, 21 | imbitrrid 249 | . 2 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ)) → (((𝑥 · 𝐾) = 𝑀 ∧ (𝑦 · 𝑀) = 𝑁) → ((𝑥 · 𝑦) · 𝐾) = 𝑁)) |
| 23 | 1, 2, 3, 5, 22 | dvds2lem 16343 | 1 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ 𝑀 ∧ 𝑀 ∥ 𝑁) → 𝐾 ∥ 𝑁)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 class class class wbr 5111 (class class class)co 7416 ℂcc 11109 · cmul 11116 ℤcz 12602 ∥ cdvds 16327 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 ax-resscn 11168 ax-1cn 11169 ax-icn 11170 ax-addcl 11171 ax-addrcl 11172 ax-mulcl 11173 ax-mulrcl 11174 ax-mulcom 11175 ax-addass 11176 ax-mulass 11177 ax-distr 11178 ax-i2m1 11179 ax-1ne0 11180 ax-1rid 11181 ax-rnegex 11182 ax-rrecex 11183 ax-cnre 11184 ax-pre-lttri 11185 ax-pre-lttrn 11186 ax-pre-ltadd 11187 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-pnf 11256 df-mnf 11257 df-ltxr 11259 df-sub 11454 df-neg 11455 df-nn 12245 df-n0 12516 df-z 12603 df-dvds 16328 |
| This theorem is used by: dvdstrd 16370 dvdsmultr1 16371 dvdsmultr2 16373 4dvdseven 16448 dvdsgcdb 16620 lcmgcdeq 16687 lcmdvdsb 16688 lcmftp 16711 lcmfdvdsb 16718 rpmulgcd2 16731 exprmfct 16780 rpexp 16798 pcpremul 16920 pcdvdsb 16946 pcprmpw2 16959 prmreclem3 16995 odmulg 19649 ablfac1b 20165 ablfac1eu 20168 wilth 27264 muval1 27326 dvdssqf 27331 sqff1o 27375 mpodvdsmulf1o 27387 dvdsmulf1o 27389 vmasum 27409 bposlem3 27479 lgsquad2lem1 27577 goldbachthlem2 48331 |
| Copyright terms: Public domain | W3C validator |