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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 5112 | . . . . . . . . . . . . 13 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑁 < 𝑀 ↔ 𝑁 < if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 2 | oveq2 7420 | . . . . . . . . . . . . . 14 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → (𝑛 · 𝑀) = (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1))) | |
| 3 | 2 | neeq1d 3016 | . . . . . . . . . . . . 13 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 1) → ((𝑛 · 𝑀) ≠ 𝑁 ↔ (𝑛 · if(𝑀 ∈ ℤ, 𝑀, 1)) ≠ 𝑁)) |
| 4 | 1, 3 | imbi12d 347 | . . . . . . . . . . . 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 5111 | . . . . . . . . . . . . 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 3020 | . . . . . . . . . . . . 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 347 | . . . . . . . . . . . 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 7419 | . . . . . . . . . . . . . 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 3016 | . . . . . . . . . . . . 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 343 | . . . . . . . . . . . 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 12630 | . . . . . . . . . . . . . 14 ⊢ 1 ∈ ℤ | |
| 12 | 11 | elimel 4556 | . . . . . . . . . . . . 13 ⊢ if(𝑀 ∈ ℤ, 𝑀, 1) ∈ ℤ |
| 13 | 1nn 12250 | . . . . . . . . . . . . . 14 ⊢ 1 ∈ ℕ | |
| 14 | 13 | elimel 4556 | . . . . . . . . . . . . 13 ⊢ if(𝑁 ∈ ℕ, 𝑁, 1) ∈ ℕ |
| 15 | 11 | elimel 4556 | . . . . . . . . . . . . 13 ⊢ if(𝑛 ∈ ℤ, 𝑛, 1) ∈ ℤ |
| 16 | 12, 14, 15 | dvdslelem 16373 | . . . . . . . . . . . 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 4547 | . . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑛 ∈ ℤ) → (𝑁 < 𝑀 → (𝑛 · 𝑀) ≠ 𝑁)) |
| 18 | 17 | 3expia 1138 | . . . . . . . . . 10 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑛 ∈ ℤ → (𝑁 < 𝑀 → (𝑛 · 𝑀) ≠ 𝑁))) |
| 19 | 18 | com23 87 | . . . . . . . . 9 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑁 < 𝑀 → (𝑛 ∈ ℤ → (𝑛 · 𝑀) ≠ 𝑁))) |
| 20 | 19 | 3impia 1134 | . . . . . . . 8 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → (𝑛 ∈ ℤ → (𝑛 · 𝑀) ≠ 𝑁)) |
| 21 | 20 | imp 411 | . . . . . . 7 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) ∧ 𝑛 ∈ ℤ) → (𝑛 · 𝑀) ≠ 𝑁) |
| 22 | 21 | neneqd 2962 | . . . . . 6 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) ∧ 𝑛 ∈ ℤ) → ¬ (𝑛 · 𝑀) = 𝑁) |
| 23 | 22 | nrexdv 3159 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → ¬ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁) |
| 24 | nnz 12618 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
| 25 | divides 16318 | . . . . . . 7 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁)) | |
| 26 | 24, 25 | sylan2 604 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁)) |
| 27 | 26 | 3adant3 1149 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → (𝑀 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ (𝑛 · 𝑀) = 𝑁)) |
| 28 | 23, 27 | mtbird 328 | . . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ 𝑁 < 𝑀) → ¬ 𝑀 ∥ 𝑁) |
| 29 | 28 | 3expia 1138 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑁 < 𝑀 → ¬ 𝑀 ∥ 𝑁)) |
| 30 | 29 | con2d 135 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ∥ 𝑁 → ¬ 𝑁 < 𝑀)) |
| 31 | zre 12601 | . . 3 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ) | |
| 32 | nnre 12246 | . . 3 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ) | |
| 33 | lenlt 11294 | . . 3 ⊢ ((𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (𝑀 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑀)) | |
| 34 | 31, 32, 33 | syl2an 607 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑀)) |
| 35 | 30, 34 | sylibrd 262 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑀 ∥ 𝑁 → 𝑀 ≤ 𝑁)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1102 = wceq 1569 ∈ wcel 2142 ≠ wne 2957 ∃wrex 3088 ifcif 4486 class class class wbr 5108 (class class class)co 7412 ℝcr 11105 1c1 11107 · cmul 11111 < clt 11249 ≤ cle 11250 ℕcn 12239 ℤcz 12597 ∥ cdvds 16316 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-n0 12511 df-z 12598 df-dvds 16317 |
| This theorem is used by: dvdsleabs 16375 dvdsssfz1 16382 fzm1ndvds 16386 fzo0dvdseq 16387 gcd1 16592 bezoutlem4 16606 dfgcd2 16610 gcdzeq 16616 bezoutr1 16633 lcmgcdlem 16670 qredeq 16721 isprm3 16747 prmdvdsfz 16770 isprm5 16772 maxprmfct 16774 isprm6 16779 prmfac1 16785 ncoprmlnprm 16793 pcpre1 16908 pcidlem 16938 pcprod 16961 pcfac 16965 pockthg 16972 prmreclem1 16982 prmreclem3 16984 prmreclem5 16986 1arith 16993 4sqlem11 17021 prmolelcmf 17114 gexcl2 19665 sylow1lem1 19674 sylow1lem5 19678 gexex 19929 ablfac1eu 20151 ablfaclem3 20165 znidomb 21722 dvdsflsumcom 27363 chtublem 27386 vmasum 27391 logfac2 27392 bposlem6 27464 lgsdir 27507 lgsdilem2 27508 lgsne0 27510 lgsqrlem2 27522 lgsquadlem2 27556 2sqlem8 27601 2sqblem 27606 2sqmod 27611 oddpwdc 34753 nn0prpw 36862 lcmineqlem20 42843 lcmineqlem22 42845 aks4d1p3 42873 aks4d1p6 42876 aks4d1p8d2 42880 aks4d1p8 42882 primrootlekpowne0 42900 aks6d1c2lem4 42922 grpods 42989 unitscyglem2 42991 unitscyglem4 42993 gcdle1d 43119 gcdle2d 43120 nznngen 45054 etransclem41 47017 |
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