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Mirrors > Home > ILE Home > Th. List > dvdsmul1 | GIF version |
Description: An integer divides a multiple of itself. (Contributed by Paul Chapman, 21-Mar-2011.) |
Ref | Expression |
---|---|
dvdsmul1 | ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → 𝑀 ∥ (𝑀 · 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zcn 9188 | . . 3 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ) | |
2 | zcn 9188 | . . 3 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
3 | mulcom 7874 | . . 3 ⊢ ((𝑁 ∈ ℂ ∧ 𝑀 ∈ ℂ) → (𝑁 · 𝑀) = (𝑀 · 𝑁)) | |
4 | 1, 2, 3 | syl2anr 288 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑁 · 𝑀) = (𝑀 · 𝑁)) |
5 | zmulcl 9236 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 · 𝑁) ∈ ℤ) | |
6 | dvds0lem 11731 | . . . . 5 ⊢ (((𝑁 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ (𝑀 · 𝑁) ∈ ℤ) ∧ (𝑁 · 𝑀) = (𝑀 · 𝑁)) → 𝑀 ∥ (𝑀 · 𝑁)) | |
7 | 6 | ex 114 | . . . 4 ⊢ ((𝑁 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ (𝑀 · 𝑁) ∈ ℤ) → ((𝑁 · 𝑀) = (𝑀 · 𝑁) → 𝑀 ∥ (𝑀 · 𝑁))) |
8 | 7 | 3com12 1196 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ (𝑀 · 𝑁) ∈ ℤ) → ((𝑁 · 𝑀) = (𝑀 · 𝑁) → 𝑀 ∥ (𝑀 · 𝑁))) |
9 | 5, 8 | mpd3an3 1327 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑁 · 𝑀) = (𝑀 · 𝑁) → 𝑀 ∥ (𝑀 · 𝑁))) |
10 | 4, 9 | mpd 13 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → 𝑀 ∥ (𝑀 · 𝑁)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∧ w3a 967 = wceq 1342 ∈ wcel 2135 class class class wbr 3977 (class class class)co 5837 ℂcc 7743 · cmul 7750 ℤcz 9183 ∥ cdvds 11717 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-14 2138 ax-ext 2146 ax-sep 4095 ax-pow 4148 ax-pr 4182 ax-setind 4509 ax-cnex 7836 ax-resscn 7837 ax-1cn 7838 ax-1re 7839 ax-icn 7840 ax-addcl 7841 ax-addrcl 7842 ax-mulcl 7843 ax-mulrcl 7844 ax-addcom 7845 ax-mulcom 7846 ax-addass 7847 ax-mulass 7848 ax-distr 7849 ax-i2m1 7850 ax-1rid 7852 ax-0id 7853 ax-rnegex 7854 ax-cnre 7856 |
This theorem depends on definitions: df-bi 116 df-3or 968 df-3an 969 df-tru 1345 df-fal 1348 df-nf 1448 df-sb 1750 df-eu 2016 df-mo 2017 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ne 2335 df-ral 2447 df-rex 2448 df-reu 2449 df-rab 2451 df-v 2724 df-sbc 2948 df-dif 3114 df-un 3116 df-in 3118 df-ss 3125 df-pw 3556 df-sn 3577 df-pr 3578 df-op 3580 df-uni 3785 df-int 3820 df-br 3978 df-opab 4039 df-id 4266 df-xp 4605 df-rel 4606 df-cnv 4607 df-co 4608 df-dm 4609 df-iota 5148 df-fun 5185 df-fv 5191 df-riota 5793 df-ov 5840 df-oprab 5841 df-mpo 5842 df-sub 8063 df-neg 8064 df-inn 8850 df-n0 9107 df-z 9184 df-dvds 11718 |
This theorem is referenced by: dvdsmultr1 11760 3dvdsdec 11791 3dvds2dec 11792 2teven 11813 opoe 11821 omoe 11822 z4even 11842 ndvdsi 11859 mulgcd 11938 dvdsmulgcd 11947 lcmval 11984 lcmcllem 11988 lcmgcdlem 11998 qredeq 12017 cncongr2 12025 nprm 12044 exprmfct 12059 prmdiv 12156 difsqpwdvds 12258 expnprm 12272 pockthlem 12275 evenennn 12289 |
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