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Mirrors > Home > MPE Home > Th. List > dvdssub2 | Structured version Visualization version GIF version |
Description: If an integer divides a difference, then it divides one term iff it divides the other. (Contributed by Mario Carneiro, 13-Jul-2014.) |
Ref | Expression |
---|---|
dvdssub2 | ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∥ (𝑀 − 𝑁)) → (𝐾 ∥ 𝑀 ↔ 𝐾 ∥ 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zsubcl 12476 | . . . . . . . 8 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − 𝑁) ∈ ℤ) | |
2 | 1 | 3adant1 1131 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − 𝑁) ∈ ℤ) |
3 | dvds2sub 16108 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ (𝑀 − 𝑁) ∈ ℤ) → ((𝐾 ∥ 𝑀 ∧ 𝐾 ∥ (𝑀 − 𝑁)) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁)))) | |
4 | 2, 3 | syld3an3 1410 | . . . . . 6 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ 𝑀 ∧ 𝐾 ∥ (𝑀 − 𝑁)) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁)))) |
5 | 4 | ancomsd 467 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁)))) |
6 | 5 | imp 408 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀)) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁))) |
7 | zcn 12438 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
8 | zcn 12438 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ) | |
9 | nncan 11364 | . . . . . . 7 ⊢ ((𝑀 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) | |
10 | 7, 8, 9 | syl2an 597 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) |
11 | 10 | 3adant1 1131 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) |
12 | 11 | adantr 482 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀)) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) |
13 | 6, 12 | breqtrd 5130 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀)) → 𝐾 ∥ 𝑁) |
14 | 13 | expr 458 | . 2 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∥ (𝑀 − 𝑁)) → (𝐾 ∥ 𝑀 → 𝐾 ∥ 𝑁)) |
15 | dvds2add 16107 | . . . . . 6 ⊢ ((𝐾 ∈ ℤ ∧ (𝑀 − 𝑁) ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁) → 𝐾 ∥ ((𝑀 − 𝑁) + 𝑁))) | |
16 | 2, 15 | syld3an2 1412 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁) → 𝐾 ∥ ((𝑀 − 𝑁) + 𝑁))) |
17 | 16 | imp 408 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁)) → 𝐾 ∥ ((𝑀 − 𝑁) + 𝑁)) |
18 | npcan 11344 | . . . . . . 7 ⊢ ((𝑀 ∈ ℂ ∧ 𝑁 ∈ ℂ) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) | |
19 | 7, 8, 18 | syl2an 597 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) |
20 | 19 | 3adant1 1131 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) |
21 | 20 | adantr 482 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁)) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) |
22 | 17, 21 | breqtrd 5130 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁)) → 𝐾 ∥ 𝑀) |
23 | 22 | expr 458 | . 2 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∥ (𝑀 − 𝑁)) → (𝐾 ∥ 𝑁 → 𝐾 ∥ 𝑀)) |
24 | 14, 23 | impbid 211 | 1 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∥ (𝑀 − 𝑁)) → (𝐾 ∥ 𝑀 ↔ 𝐾 ∥ 𝑁)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 class class class wbr 5104 (class class class)co 7350 ℂcc 10983 + caddc 10988 − cmin 11319 ℤcz 12433 ∥ cdvds 16071 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2709 ax-sep 5255 ax-nul 5262 ax-pow 5319 ax-pr 5383 ax-un 7663 ax-resscn 11042 ax-1cn 11043 ax-icn 11044 ax-addcl 11045 ax-addrcl 11046 ax-mulcl 11047 ax-mulrcl 11048 ax-mulcom 11049 ax-addass 11050 ax-mulass 11051 ax-distr 11052 ax-i2m1 11053 ax-1ne0 11054 ax-1rid 11055 ax-rnegex 11056 ax-rrecex 11057 ax-cnre 11058 ax-pre-lttri 11059 ax-pre-lttrn 11060 ax-pre-ltadd 11061 ax-pre-mulgt0 11062 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3064 df-rex 3073 df-reu 3353 df-rab 3407 df-v 3446 df-sbc 3739 df-csb 3855 df-dif 3912 df-un 3914 df-in 3916 df-ss 3926 df-pss 3928 df-nul 4282 df-if 4486 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4865 df-iun 4955 df-br 5105 df-opab 5167 df-mpt 5188 df-tr 5222 df-id 5529 df-eprel 5535 df-po 5543 df-so 5544 df-fr 5586 df-we 5588 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6250 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6444 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7306 df-ov 7353 df-oprab 7354 df-mpo 7355 df-om 7794 df-2nd 7913 df-frecs 8180 df-wrecs 8211 df-recs 8285 df-rdg 8324 df-er 8582 df-en 8818 df-dom 8819 df-sdom 8820 df-pnf 11125 df-mnf 11126 df-xr 11127 df-ltxr 11128 df-le 11129 df-sub 11321 df-neg 11322 df-nn 12088 df-n0 12348 df-z 12434 df-dvds 16072 |
This theorem is referenced by: dvdsadd 16119 3dvds 16148 bitsmod 16251 bitsinv1lem 16256 sylow2blem3 19333 znunit 20893 perfectlem1 26499 lgsqr 26621 lgsqrmodndvds 26623 2sqlem8 26696 poimirlem28 35992 jm2.20nn 41155 |
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