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Mirrors > Home > MPE Home > Th. List > negdvdsb | Structured version Visualization version GIF version |
Description: An integer divides another iff its negation does. (Contributed by Paul Chapman, 21-Mar-2011.) |
Ref | Expression |
---|---|
negdvdsb | ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∥ 𝑁 ↔ -𝑀 ∥ 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ)) | |
2 | znegcl 11613 | . . . 4 ⊢ (𝑀 ∈ ℤ → -𝑀 ∈ ℤ) | |
3 | 2 | anim1i 594 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (-𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ)) |
4 | znegcl 11613 | . . . 4 ⊢ (𝑥 ∈ ℤ → -𝑥 ∈ ℤ) | |
5 | 4 | adantl 467 | . . 3 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → -𝑥 ∈ ℤ) |
6 | zcn 11583 | . . . . . . 7 ⊢ (𝑥 ∈ ℤ → 𝑥 ∈ ℂ) | |
7 | zcn 11583 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
8 | mul2neg 10670 | . . . . . . 7 ⊢ ((𝑥 ∈ ℂ ∧ 𝑀 ∈ ℂ) → (-𝑥 · -𝑀) = (𝑥 · 𝑀)) | |
9 | 6, 7, 8 | syl2anr 576 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑥 ∈ ℤ) → (-𝑥 · -𝑀) = (𝑥 · 𝑀)) |
10 | 9 | adantlr 686 | . . . . 5 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → (-𝑥 · -𝑀) = (𝑥 · 𝑀)) |
11 | 10 | eqeq1d 2772 | . . . 4 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → ((-𝑥 · -𝑀) = 𝑁 ↔ (𝑥 · 𝑀) = 𝑁)) |
12 | 11 | biimprd 238 | . . 3 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → ((𝑥 · 𝑀) = 𝑁 → (-𝑥 · -𝑀) = 𝑁)) |
13 | 1, 3, 5, 12 | dvds1lem 15201 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∥ 𝑁 → -𝑀 ∥ 𝑁)) |
14 | mulneg12 10669 | . . . . . . 7 ⊢ ((𝑥 ∈ ℂ ∧ 𝑀 ∈ ℂ) → (-𝑥 · 𝑀) = (𝑥 · -𝑀)) | |
15 | 6, 7, 14 | syl2anr 576 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑥 ∈ ℤ) → (-𝑥 · 𝑀) = (𝑥 · -𝑀)) |
16 | 15 | adantlr 686 | . . . . 5 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → (-𝑥 · 𝑀) = (𝑥 · -𝑀)) |
17 | 16 | eqeq1d 2772 | . . . 4 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → ((-𝑥 · 𝑀) = 𝑁 ↔ (𝑥 · -𝑀) = 𝑁)) |
18 | 17 | biimprd 238 | . . 3 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑥 ∈ ℤ) → ((𝑥 · -𝑀) = 𝑁 → (-𝑥 · 𝑀) = 𝑁)) |
19 | 3, 1, 5, 18 | dvds1lem 15201 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (-𝑀 ∥ 𝑁 → 𝑀 ∥ 𝑁)) |
20 | 13, 19 | impbid 202 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∥ 𝑁 ↔ -𝑀 ∥ 𝑁)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 196 ∧ wa 382 = wceq 1630 ∈ wcel 2144 class class class wbr 4784 (class class class)co 6792 ℂcc 10135 · cmul 10142 -cneg 10468 ℤcz 11578 ∥ cdvds 15188 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1869 ax-4 1884 ax-5 1990 ax-6 2056 ax-7 2092 ax-8 2146 ax-9 2153 ax-10 2173 ax-11 2189 ax-12 2202 ax-13 2407 ax-ext 2750 ax-sep 4912 ax-nul 4920 ax-pow 4971 ax-pr 5034 ax-un 7095 ax-resscn 10194 ax-1cn 10195 ax-icn 10196 ax-addcl 10197 ax-addrcl 10198 ax-mulcl 10199 ax-mulrcl 10200 ax-mulcom 10201 ax-addass 10202 ax-mulass 10203 ax-distr 10204 ax-i2m1 10205 ax-1ne0 10206 ax-1rid 10207 ax-rnegex 10208 ax-rrecex 10209 ax-cnre 10210 ax-pre-lttri 10211 ax-pre-lttrn 10212 ax-pre-ltadd 10213 ax-pre-mulgt0 10214 |
This theorem depends on definitions: df-bi 197 df-an 383 df-or 827 df-3or 1071 df-3an 1072 df-tru 1633 df-ex 1852 df-nf 1857 df-sb 2049 df-eu 2621 df-mo 2622 df-clab 2757 df-cleq 2763 df-clel 2766 df-nfc 2901 df-ne 2943 df-nel 3046 df-ral 3065 df-rex 3066 df-reu 3067 df-rab 3069 df-v 3351 df-sbc 3586 df-csb 3681 df-dif 3724 df-un 3726 df-in 3728 df-ss 3735 df-pss 3737 df-nul 4062 df-if 4224 df-pw 4297 df-sn 4315 df-pr 4317 df-tp 4319 df-op 4321 df-uni 4573 df-iun 4654 df-br 4785 df-opab 4845 df-mpt 4862 df-tr 4885 df-id 5157 df-eprel 5162 df-po 5170 df-so 5171 df-fr 5208 df-we 5210 df-xp 5255 df-rel 5256 df-cnv 5257 df-co 5258 df-dm 5259 df-rn 5260 df-res 5261 df-ima 5262 df-pred 5823 df-ord 5869 df-on 5870 df-lim 5871 df-suc 5872 df-iota 5994 df-fun 6033 df-fn 6034 df-f 6035 df-f1 6036 df-fo 6037 df-f1o 6038 df-fv 6039 df-riota 6753 df-ov 6795 df-oprab 6796 df-mpt2 6797 df-om 7212 df-wrecs 7558 df-recs 7620 df-rdg 7658 df-er 7895 df-en 8109 df-dom 8110 df-sdom 8111 df-pnf 10277 df-mnf 10278 df-xr 10279 df-ltxr 10280 df-le 10281 df-sub 10469 df-neg 10470 df-nn 11222 df-z 11579 df-dvds 15189 |
This theorem is referenced by: absdvdsb 15208 3dvds 15260 3dvdsOLD 15261 lcmneg 15523 |
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