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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 5128 | . . . . . . . . . . . . 13 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑁 < 𝑀 ↔ 𝑁 < if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 2 | oveq2 7418 | . . . . . . . . . . . . . 14 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑛 · 𝑀) = (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 3 | 2 | neeq1d 2992 | . . . . . . . . . . . . 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 5127 | . . . . . . . . . . . . 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 2996 | . . . . . . . . . . . . 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 7417 | . . . . . . . . . . . . . 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 2992 | . . . . . . . . . . . . 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 12627 | . . . . . . . . . . . . . 14 ⊢ 1 ∈ ℤ | |
| 12 | 11 | elimel 4575 | . . . . . . . . . . . . 13 ⊢ if(𝑀 ∈ ℤ, 𝑀, 1) ∈ ℤ |
| 13 | 1nn 12256 | . . . . . . . . . . . . . 14 ⊢ 1 ∈ ℕ | |
| 14 | 13 | elimel 4575 | . . . . . . . . . . . . 13 ⊢ if(𝑁 ∈ ℕ, 𝑁, 1) ∈ ℕ |
| 15 | 11 | elimel 4575 | . . . . . . . . . . . . 13 ⊢ if(𝑛 ∈ ℤ, 𝑛, 1) ∈ ℤ |
| 16 | 12, 14, 15 | dvdslelem 16333 | . . . . . . . . . . . 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 4566 | . . . . . . . . . . 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 2938 | . . . . . 6 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) ∧ 𝑛 ∈ ℤ) → ¬ (𝑛 · 𝑀) = 𝑁) |
| 23 | 22 | nrexdv 3136 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → ¬ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁) |
| 24 | nnz 12614 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
| 25 | divides 16279 | . . . . . . 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 12597 | . . 3 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ) | |
| 32 | nnre 12252 | . . 3 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ) | |
| 33 | lenlt 11318 | . . 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 1540 ∈ wcel 2109 ≠ wne 2933 ∃wrex 3061 ifcif 4505 class class class wbr 5124 (class class class)co 7410 ℝcr 11133 1c1 11135 · cmul 11139 < clt 11274 ≤ cle 11275 ℕcn 12245 ℤcz 12593 ∥ cdvds 16277 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2708 ax-sep 5271 ax-nul 5281 ax-pow 5340 ax-pr 5407 ax-un 7734 ax-resscn 11191 ax-1cn 11192 ax-icn 11193 ax-addcl 11194 ax-addrcl 11195 ax-mulcl 11196 ax-mulrcl 11197 ax-mulcom 11198 ax-addass 11199 ax-mulass 11200 ax-distr 11201 ax-i2m1 11202 ax-1ne0 11203 ax-1rid 11204 ax-rnegex 11205 ax-rrecex 11206 ax-cnre 11207 ax-pre-lttri 11208 ax-pre-lttrn 11209 ax-pre-ltadd 11210 ax-pre-mulgt0 11211 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2810 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4889 df-iun 4974 df-br 5125 df-opab 5187 df-mpt 5207 df-tr 5235 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6295 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7867 df-2nd 7994 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-rdg 8429 df-er 8724 df-en 8965 df-dom 8966 df-sdom 8967 df-pnf 11276 df-mnf 11277 df-xr 11278 df-ltxr 11279 df-le 11280 df-sub 11473 df-neg 11474 df-nn 12246 df-n0 12507 df-z 12594 df-dvds 16278 |
| This theorem is referenced by: dvdsleabs 16335 dvdsssfz1 16342 fzm1ndvds 16346 fzo0dvdseq 16347 gcd1 16552 bezoutlem4 16566 dfgcd2 16570 gcdzeq 16576 bezoutr1 16593 lcmgcdlem 16630 qredeq 16681 isprm3 16707 prmdvdsfz 16729 isprm5 16731 maxprmfct 16733 isprm6 16738 prmfac1 16744 ncoprmlnprm 16752 pcpre1 16867 pcidlem 16897 pcprod 16920 pcfac 16924 pockthg 16931 prmreclem1 16941 prmreclem3 16943 prmreclem5 16945 1arith 16952 4sqlem11 16980 prmolelcmf 17073 gexcl2 19575 sylow1lem1 19584 sylow1lem5 19588 gexex 19839 ablfac1eu 20061 ablfaclem3 20075 znidomb 21527 dvdsflsumcom 27155 chtublem 27179 vmasum 27184 logfac2 27185 bposlem6 27257 lgsdir 27300 lgsdilem2 27301 lgsne0 27303 lgsqrlem2 27315 lgsquadlem2 27349 2sqlem8 27394 2sqblem 27399 2sqmod 27404 oddpwdc 34391 nn0prpw 36346 lcmineqlem20 42066 lcmineqlem22 42068 aks4d1p3 42096 aks4d1p6 42099 aks4d1p8d2 42103 aks4d1p8 42105 primrootlekpowne0 42123 aks6d1c2lem4 42145 grpods 42212 unitscyglem2 42214 unitscyglem4 42216 gcdle1d 42348 gcdle2d 42349 nznngen 44315 etransclem41 46284 |
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