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Mirrors > Home > ILE Home > Th. List > euclemma | GIF version |
Description: Euclid's lemma. A prime number divides the product of two integers iff it divides at least one of them. Theorem 1.9 in [ApostolNT] p. 17. (Contributed by Paul Chapman, 17-Nov-2012.) |
Ref | Expression |
---|---|
euclemma | ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑃 ∥ (𝑀 · 𝑁) ↔ (𝑃 ∥ 𝑀 ∨ 𝑃 ∥ 𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coprm 11749 | . . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ) → (¬ 𝑃 ∥ 𝑀 ↔ (𝑃 gcd 𝑀) = 1)) | |
2 | 1 | 3adant3 986 | . . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (¬ 𝑃 ∥ 𝑀 ↔ (𝑃 gcd 𝑀) = 1)) |
3 | 2 | anbi2d 459 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑃 ∥ (𝑀 · 𝑁) ∧ ¬ 𝑃 ∥ 𝑀) ↔ (𝑃 ∥ (𝑀 · 𝑁) ∧ (𝑃 gcd 𝑀) = 1))) |
4 | prmz 11719 | . . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℤ) | |
5 | coprmdvds 11700 | . . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑃 ∥ (𝑀 · 𝑁) ∧ (𝑃 gcd 𝑀) = 1) → 𝑃 ∥ 𝑁)) | |
6 | 4, 5 | syl3an1 1234 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑃 ∥ (𝑀 · 𝑁) ∧ (𝑃 gcd 𝑀) = 1) → 𝑃 ∥ 𝑁)) |
7 | 3, 6 | sylbid 149 | . . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑃 ∥ (𝑀 · 𝑁) ∧ ¬ 𝑃 ∥ 𝑀) → 𝑃 ∥ 𝑁)) |
8 | 7 | expd 256 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑃 ∥ (𝑀 · 𝑁) → (¬ 𝑃 ∥ 𝑀 → 𝑃 ∥ 𝑁))) |
9 | prmnn 11718 | . . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ) | |
10 | 9 | 3ad2ant1 987 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → 𝑃 ∈ ℕ) |
11 | simp2 967 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → 𝑀 ∈ ℤ) | |
12 | dvdsdc 11428 | . . . . 5 ⊢ ((𝑃 ∈ ℕ ∧ 𝑀 ∈ ℤ) → DECID 𝑃 ∥ 𝑀) | |
13 | 10, 11, 12 | syl2anc 408 | . . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → DECID 𝑃 ∥ 𝑀) |
14 | dfordc 862 | . . . 4 ⊢ (DECID 𝑃 ∥ 𝑀 → ((𝑃 ∥ 𝑀 ∨ 𝑃 ∥ 𝑁) ↔ (¬ 𝑃 ∥ 𝑀 → 𝑃 ∥ 𝑁))) | |
15 | 13, 14 | syl 14 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑃 ∥ 𝑀 ∨ 𝑃 ∥ 𝑁) ↔ (¬ 𝑃 ∥ 𝑀 → 𝑃 ∥ 𝑁))) |
16 | 8, 15 | sylibrd 168 | . 2 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑃 ∥ (𝑀 · 𝑁) → (𝑃 ∥ 𝑀 ∨ 𝑃 ∥ 𝑁))) |
17 | ordvdsmul 11461 | . . 3 ⊢ ((𝑃 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑃 ∥ 𝑀 ∨ 𝑃 ∥ 𝑁) → 𝑃 ∥ (𝑀 · 𝑁))) | |
18 | 4, 17 | syl3an1 1234 | . 2 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑃 ∥ 𝑀 ∨ 𝑃 ∥ 𝑁) → 𝑃 ∥ (𝑀 · 𝑁))) |
19 | 16, 18 | impbid 128 | 1 ⊢ ((𝑃 ∈ ℙ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑃 ∥ (𝑀 · 𝑁) ↔ (𝑃 ∥ 𝑀 ∨ 𝑃 ∥ 𝑁))) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ↔ wb 104 ∨ wo 682 DECID wdc 804 ∧ w3a 947 = wceq 1316 ∈ wcel 1465 class class class wbr 3899 (class class class)co 5742 1c1 7589 · cmul 7593 ℕcn 8688 ℤcz 9022 ∥ cdvds 11420 gcd cgcd 11562 ℙcprime 11715 |
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 588 ax-in2 589 ax-io 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-13 1476 ax-14 1477 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 ax-coll 4013 ax-sep 4016 ax-nul 4024 ax-pow 4068 ax-pr 4101 ax-un 4325 ax-setind 4422 ax-iinf 4472 ax-cnex 7679 ax-resscn 7680 ax-1cn 7681 ax-1re 7682 ax-icn 7683 ax-addcl 7684 ax-addrcl 7685 ax-mulcl 7686 ax-mulrcl 7687 ax-addcom 7688 ax-mulcom 7689 ax-addass 7690 ax-mulass 7691 ax-distr 7692 ax-i2m1 7693 ax-0lt1 7694 ax-1rid 7695 ax-0id 7696 ax-rnegex 7697 ax-precex 7698 ax-cnre 7699 ax-pre-ltirr 7700 ax-pre-ltwlin 7701 ax-pre-lttrn 7702 ax-pre-apti 7703 ax-pre-ltadd 7704 ax-pre-mulgt0 7705 ax-pre-mulext 7706 ax-arch 7707 ax-caucvg 7708 |
This theorem depends on definitions: df-bi 116 df-dc 805 df-3or 948 df-3an 949 df-tru 1319 df-fal 1322 df-nf 1422 df-sb 1721 df-eu 1980 df-mo 1981 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-ne 2286 df-nel 2381 df-ral 2398 df-rex 2399 df-reu 2400 df-rmo 2401 df-rab 2402 df-v 2662 df-sbc 2883 df-csb 2976 df-dif 3043 df-un 3045 df-in 3047 df-ss 3054 df-nul 3334 df-if 3445 df-pw 3482 df-sn 3503 df-pr 3504 df-op 3506 df-uni 3707 df-int 3742 df-iun 3785 df-br 3900 df-opab 3960 df-mpt 3961 df-tr 3997 df-id 4185 df-po 4188 df-iso 4189 df-iord 4258 df-on 4260 df-ilim 4261 df-suc 4263 df-iom 4475 df-xp 4515 df-rel 4516 df-cnv 4517 df-co 4518 df-dm 4519 df-rn 4520 df-res 4521 df-ima 4522 df-iota 5058 df-fun 5095 df-fn 5096 df-f 5097 df-f1 5098 df-fo 5099 df-f1o 5100 df-fv 5101 df-riota 5698 df-ov 5745 df-oprab 5746 df-mpo 5747 df-1st 6006 df-2nd 6007 df-recs 6170 df-frec 6256 df-1o 6281 df-2o 6282 df-er 6397 df-en 6603 df-sup 6839 df-pnf 7770 df-mnf 7771 df-xr 7772 df-ltxr 7773 df-le 7774 df-sub 7903 df-neg 7904 df-reap 8305 df-ap 8312 df-div 8401 df-inn 8689 df-2 8747 df-3 8748 df-4 8749 df-n0 8946 df-z 9023 df-uz 9295 df-q 9380 df-rp 9410 df-fz 9759 df-fzo 9888 df-fl 10011 df-mod 10064 df-seqfrec 10187 df-exp 10261 df-cj 10582 df-re 10583 df-im 10584 df-rsqrt 10738 df-abs 10739 df-dvds 11421 df-gcd 11563 df-prm 11716 |
This theorem is referenced by: isprm6 11752 prmdvdsexp 11753 prmfac1 11757 sqpweven 11780 2sqpwodd 11781 |
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