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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 12362 | . . . . . . . 8 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − 𝑁) ∈ ℤ) | |
2 | 1 | 3adant1 1129 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − 𝑁) ∈ ℤ) |
3 | dvds2sub 16000 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ (𝑀 − 𝑁) ∈ ℤ) → ((𝐾 ∥ 𝑀 ∧ 𝐾 ∥ (𝑀 − 𝑁)) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁)))) | |
4 | 2, 3 | syld3an3 1408 | . . . . . 6 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ 𝑀 ∧ 𝐾 ∥ (𝑀 − 𝑁)) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁)))) |
5 | 4 | ancomsd 466 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁)))) |
6 | 5 | imp 407 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀)) → 𝐾 ∥ (𝑀 − (𝑀 − 𝑁))) |
7 | zcn 12324 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
8 | zcn 12324 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ) | |
9 | nncan 11250 | . . . . . . 7 ⊢ ((𝑀 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) | |
10 | 7, 8, 9 | syl2an 596 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) |
11 | 10 | 3adant1 1129 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) |
12 | 11 | adantr 481 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀)) → (𝑀 − (𝑀 − 𝑁)) = 𝑁) |
13 | 6, 12 | breqtrd 5100 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑀)) → 𝐾 ∥ 𝑁) |
14 | 13 | expr 457 | . 2 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∥ (𝑀 − 𝑁)) → (𝐾 ∥ 𝑀 → 𝐾 ∥ 𝑁)) |
15 | dvds2add 15999 | . . . . . 6 ⊢ ((𝐾 ∈ ℤ ∧ (𝑀 − 𝑁) ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁) → 𝐾 ∥ ((𝑀 − 𝑁) + 𝑁))) | |
16 | 2, 15 | syld3an2 1410 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁) → 𝐾 ∥ ((𝑀 − 𝑁) + 𝑁))) |
17 | 16 | imp 407 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁)) → 𝐾 ∥ ((𝑀 − 𝑁) + 𝑁)) |
18 | npcan 11230 | . . . . . . 7 ⊢ ((𝑀 ∈ ℂ ∧ 𝑁 ∈ ℂ) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) | |
19 | 7, 8, 18 | syl2an 596 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) |
20 | 19 | 3adant1 1129 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) |
21 | 20 | adantr 481 | . . . 4 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁)) → ((𝑀 − 𝑁) + 𝑁) = 𝑀) |
22 | 17, 21 | breqtrd 5100 | . . 3 ⊢ (((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∥ (𝑀 − 𝑁) ∧ 𝐾 ∥ 𝑁)) → 𝐾 ∥ 𝑀) |
23 | 22 | expr 457 | . 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 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 class class class wbr 5074 (class class class)co 7275 ℂcc 10869 + caddc 10874 − cmin 11205 ℤcz 12319 ∥ cdvds 15963 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-n0 12234 df-z 12320 df-dvds 15964 |
This theorem is referenced by: dvdsadd 16011 3dvds 16040 bitsmod 16143 bitsinv1lem 16148 sylow2blem3 19227 znunit 20771 perfectlem1 26377 lgsqr 26499 lgsqrmodndvds 26501 2sqlem8 26574 poimirlem28 35805 jm2.20nn 40819 |
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