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| Mirrors > Home > MPE Home > Th. List > dvdsle | Structured version Visualization version GIF version | ||
| Description: The divisors of a positive integer are bounded by it. The proof does not use /. (Contributed by Paul Chapman, 21-Mar-2011.) |
| Ref | Expression |
|---|---|
| dvdsle | ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ∥ 𝑁 → 𝑀 ≤ 𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq2 5146 | . . . . . . . . . . . . 13 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑁 < 𝑀 ↔ 𝑁 < if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 2 | oveq2 7440 | . . . . . . . . . . . . . 14 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑛 · 𝑀) = (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 3 | 2 | neeq1d 2999 | . . . . . . . . . . . . 13 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → ((𝑛 · 𝑀) ≠ 𝑁 ↔ (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ 𝑁)) |
| 4 | 1, 3 | imbi12d 344 | . . . . . . . . . . . 12 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → ((𝑁 < 𝑀 → (𝑛 · 𝑀) ≠ 𝑁) ↔ (𝑁 < if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ 𝑁))) |
| 5 | breq1 5145 | . . . . . . . . . . . . 13 ⊢ (𝑁 = if(𝑁 ∈ ℕ, 𝑁, 1) → (𝑁 < if(𝑀 ∈ ℤ, 𝑀, 1) ↔ if(𝑁 ∈ ℕ, 𝑁, 1) < if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 6 | neeq2 3003 | . . . . . . . . . . . . 13 ⊢ (𝑁 = if(𝑁 ∈ ℕ, 𝑁, 1) → ((𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ 𝑁 ↔ (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ if(𝑁 ∈ ℕ, 𝑁, 1))) | |
| 7 | 5, 6 | imbi12d 344 | . . . . . . . . . . . 12 ⊢ (𝑁 = if(𝑁 ∈ ℕ, 𝑁, 1) → ((𝑁 < if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ 𝑁) ↔ (if(𝑁 ∈ ℕ, 𝑁, 1) < if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ if(𝑁 ∈ ℕ, 𝑁, 1)))) |
| 8 | oveq1 7439 | . . . . . . . . . . . . . 14 ⊢ (𝑛 = if(𝑛 ∈ ℤ, 𝑛, 1) → (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) = (if(𝑛 ∈ ℤ, 𝑛, 1) · if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 9 | 8 | neeq1d 2999 | . . . . . . . . . . . . 13 ⊢ (𝑛 = if(𝑛 ∈ ℤ, 𝑛, 1) → ((𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ if(𝑁 ∈ ℕ, 𝑁, 1) ↔ (if(𝑛 ∈ ℤ, 𝑛, 1) · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ if(𝑁 ∈ ℕ, 𝑁, 1))) |
| 10 | 9 | imbi2d 340 | . . . . . . . . . . . 12 ⊢ (𝑛 = if(𝑛 ∈ ℤ, 𝑛, 1) → ((if(𝑁 ∈ ℕ, 𝑁, 1) < if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ if(𝑁 ∈ ℕ, 𝑁, 1)) ↔ (if(𝑁 ∈ ℕ, 𝑁, 1) < if(𝑀 ∈ ℤ, 𝑀, 1) → (if(𝑛 ∈ ℤ, 𝑛, 1) · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ if(𝑁 ∈ ℕ, 𝑁, 1)))) |
| 11 | 1z 12649 | . . . . . . . . . . . . . 14 ⊢ 1 ∈ ℤ | |
| 12 | 11 | elimel 4594 | . . . . . . . . . . . . 13 ⊢ if(𝑀 ∈ ℤ, 𝑀, 1) ∈ ℤ |
| 13 | 1nn 12278 | . . . . . . . . . . . . . 14 ⊢ 1 ∈ ℕ | |
| 14 | 13 | elimel 4594 | . . . . . . . . . . . . 13 ⊢ if(𝑁 ∈ ℕ, 𝑁, 1) ∈ ℕ |
| 15 | 11 | elimel 4594 | . . . . . . . . . . . . 13 ⊢ if(𝑛 ∈ ℤ, 𝑛, 1) ∈ ℤ |
| 16 | 12, 14, 15 | dvdslelem 16347 | . . . . . . . . . . . 12 ⊢ (if(𝑁 ∈ ℕ, 𝑁, 1) < if(𝑀 ∈ ℤ, 𝑀, 1) → (if(𝑛 ∈ ℤ, 𝑛, 1) · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ if(𝑁 ∈ ℕ, 𝑁, 1)) |
| 17 | 4, 7, 10, 16 | dedth3h 4585 | . . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑛 ∈ ℤ) → (𝑁 < 𝑀 → (𝑛 · 𝑀) ≠ 𝑁)) |
| 18 | 17 | 3expia 1121 | . . . . . . . . . 10 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑛 ∈ ℤ → (𝑁 < 𝑀 → (𝑛 · 𝑀) ≠ 𝑁))) |
| 19 | 18 | com23 86 | . . . . . . . . 9 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑁 < 𝑀 → (𝑛 ∈ ℤ → (𝑛 · 𝑀) ≠ 𝑁))) |
| 20 | 19 | 3impia 1117 | . . . . . . . 8 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → (𝑛 ∈ ℤ → (𝑛 · 𝑀) ≠ 𝑁)) |
| 21 | 20 | imp 406 | . . . . . . 7 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) ∧ 𝑛 ∈ ℤ) → (𝑛 · 𝑀) ≠ 𝑁) |
| 22 | 21 | neneqd 2944 | . . . . . 6 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) ∧ 𝑛 ∈ ℤ) → ¬ (𝑛 · 𝑀) = 𝑁) |
| 23 | 22 | nrexdv 3148 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → ¬ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁) |
| 24 | nnz 12636 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
| 25 | divides 16293 | . . . . . . 7 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁)) | |
| 26 | 24, 25 | sylan2 593 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁)) |
| 27 | 26 | 3adant3 1132 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → (𝑀 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁)) |
| 28 | 23, 27 | mtbird 325 | . . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → ¬ 𝑀 ∥ 𝑁) |
| 29 | 28 | 3expia 1121 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑁 < 𝑀 → ¬ 𝑀 ∥ 𝑁)) |
| 30 | 29 | con2d 134 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ∥ 𝑁 → ¬ 𝑁 < 𝑀)) |
| 31 | zre 12619 | . . 3 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ) | |
| 32 | nnre 12274 | . . 3 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ) | |
| 33 | lenlt 11340 | . . 3 ⊢ ((𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (𝑀 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑀)) | |
| 34 | 31, 32, 33 | syl2an 596 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑀)) |
| 35 | 30, 34 | sylibrd 259 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ∥ 𝑁 → 𝑀 ≤ 𝑁)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1539 ∈ wcel 2107 ≠ wne 2939 ∃wrex 3069 ifcif 4524 class class class wbr 5142 (class class class)co 7432 ℝcr 11155 1c1 11157 · cmul 11161 < clt 11296 ≤ cle 11297 ℕcn 12267 ℤcz 12615 ∥ cdvds 16291 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2707 ax-sep 5295 ax-nul 5305 ax-pow 5364 ax-pr 5431 ax-un 7756 ax-resscn 11213 ax-1cn 11214 ax-icn 11215 ax-addcl 11216 ax-addrcl 11217 ax-mulcl 11218 ax-mulrcl 11219 ax-mulcom 11220 ax-addass 11221 ax-mulass 11222 ax-distr 11223 ax-i2m1 11224 ax-1ne0 11225 ax-1rid 11226 ax-rnegex 11227 ax-rrecex 11228 ax-cnre 11229 ax-pre-lttri 11230 ax-pre-lttrn 11231 ax-pre-ltadd 11232 ax-pre-mulgt0 11233 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3380 df-rab 3436 df-v 3481 df-sbc 3788 df-csb 3899 df-dif 3953 df-un 3955 df-in 3957 df-ss 3967 df-pss 3970 df-nul 4333 df-if 4525 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4907 df-iun 4992 df-br 5143 df-opab 5205 df-mpt 5225 df-tr 5259 df-id 5577 df-eprel 5583 df-po 5591 df-so 5592 df-fr 5636 df-we 5638 df-xp 5690 df-rel 5691 df-cnv 5692 df-co 5693 df-dm 5694 df-rn 5695 df-res 5696 df-ima 5697 df-pred 6320 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6513 df-fun 6562 df-fn 6563 df-f 6564 df-f1 6565 df-fo 6566 df-f1o 6567 df-fv 6568 df-riota 7389 df-ov 7435 df-oprab 7436 df-mpo 7437 df-om 7889 df-2nd 8016 df-frecs 8307 df-wrecs 8338 df-recs 8412 df-rdg 8451 df-er 8746 df-en 8987 df-dom 8988 df-sdom 8989 df-pnf 11298 df-mnf 11299 df-xr 11300 df-ltxr 11301 df-le 11302 df-sub 11495 df-neg 11496 df-nn 12268 df-n0 12529 df-z 12616 df-dvds 16292 |
| This theorem is referenced by: dvdsleabs 16349 dvdsssfz1 16356 fzm1ndvds 16360 fzo0dvdseq 16361 gcd1 16566 bezoutlem4 16580 dfgcd2 16584 gcdzeq 16590 bezoutr1 16607 lcmgcdlem 16644 qredeq 16695 isprm3 16721 prmdvdsfz 16743 isprm5 16745 maxprmfct 16747 isprm6 16752 prmfac1 16758 ncoprmlnprm 16766 pcpre1 16881 pcidlem 16911 pcprod 16934 pcfac 16938 pockthg 16945 prmreclem1 16955 prmreclem3 16957 prmreclem5 16959 1arith 16966 4sqlem11 16994 prmolelcmf 17087 gexcl2 19608 sylow1lem1 19617 sylow1lem5 19621 gexex 19872 ablfac1eu 20094 ablfaclem3 20108 znidomb 21581 dvdsflsumcom 27232 chtublem 27256 vmasum 27261 logfac2 27262 bposlem6 27334 lgsdir 27377 lgsdilem2 27378 lgsne0 27380 lgsqrlem2 27392 lgsquadlem2 27426 2sqlem8 27471 2sqblem 27476 2sqmod 27481 oddpwdc 34357 nn0prpw 36325 lcmineqlem20 42050 lcmineqlem22 42052 aks4d1p3 42080 aks4d1p6 42083 aks4d1p8d2 42087 aks4d1p8 42089 primrootlekpowne0 42107 aks6d1c2lem4 42129 grpods 42196 unitscyglem2 42198 unitscyglem4 42200 gcdle1d 42370 gcdle2d 42371 nznngen 44340 etransclem41 46295 |
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