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Mirrors > Home > ILE Home > Th. List > dvdsbnd | GIF version |
Description: There is an upper bound to the divisors of a nonzero integer. (Contributed by Jim Kingdon, 11-Dec-2021.) |
Ref | Expression |
---|---|
dvdsbnd | ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → ∃𝑛 ∈ ℕ ∀𝑚 ∈ (ℤ≥‘𝑛) ¬ 𝑚 ∥ 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 108 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → 𝐴 ∈ ℤ) | |
2 | 1 | zcnd 9305 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → 𝐴 ∈ ℂ) |
3 | 2 | abscld 11109 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ) |
4 | arch 9102 | . . 3 ⊢ ((abs‘𝐴) ∈ ℝ → ∃𝑛 ∈ ℕ (abs‘𝐴) < 𝑛) | |
5 | 3, 4 | syl 14 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → ∃𝑛 ∈ ℕ (abs‘𝐴) < 𝑛) |
6 | 3 | ad3antrrr 484 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) ∈ ℝ) |
7 | simpllr 524 | . . . . . . . . 9 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑛 ∈ ℕ) | |
8 | 7 | nnred 8861 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑛 ∈ ℝ) |
9 | eluzelz 9466 | . . . . . . . . . 10 ⊢ (𝑚 ∈ (ℤ≥‘𝑛) → 𝑚 ∈ ℤ) | |
10 | 9 | adantl 275 | . . . . . . . . 9 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑚 ∈ ℤ) |
11 | 10 | zred 9304 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑚 ∈ ℝ) |
12 | simplr 520 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) < 𝑛) | |
13 | eluzle 9469 | . . . . . . . . 9 ⊢ (𝑚 ∈ (ℤ≥‘𝑛) → 𝑛 ≤ 𝑚) | |
14 | 13 | adantl 275 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑛 ≤ 𝑚) |
15 | 6, 8, 11, 12, 14 | ltletrd 8312 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) < 𝑚) |
16 | zabscl 11014 | . . . . . . . . 9 ⊢ (𝐴 ∈ ℤ → (abs‘𝐴) ∈ ℤ) | |
17 | 16 | ad4antr 486 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) ∈ ℤ) |
18 | zltnle 9228 | . . . . . . . 8 ⊢ (((abs‘𝐴) ∈ ℤ ∧ 𝑚 ∈ ℤ) → ((abs‘𝐴) < 𝑚 ↔ ¬ 𝑚 ≤ (abs‘𝐴))) | |
19 | 17, 10, 18 | syl2anc 409 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → ((abs‘𝐴) < 𝑚 ↔ ¬ 𝑚 ≤ (abs‘𝐴))) |
20 | 15, 19 | mpbid 146 | . . . . . 6 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → ¬ 𝑚 ≤ (abs‘𝐴)) |
21 | 1 | ad3antrrr 484 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝐴 ∈ ℤ) |
22 | simplr 520 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) → 𝐴 ≠ 0) | |
23 | 22 | ad2antrr 480 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝐴 ≠ 0) |
24 | dvdsleabs 11768 | . . . . . . . 8 ⊢ ((𝑚 ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → (𝑚 ∥ 𝐴 → 𝑚 ≤ (abs‘𝐴))) | |
25 | 24 | con3d 621 | . . . . . . 7 ⊢ ((𝑚 ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → (¬ 𝑚 ≤ (abs‘𝐴) → ¬ 𝑚 ∥ 𝐴)) |
26 | 10, 21, 23, 25 | syl3anc 1227 | . . . . . 6 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (¬ 𝑚 ≤ (abs‘𝐴) → ¬ 𝑚 ∥ 𝐴)) |
27 | 20, 26 | mpd 13 | . . . . 5 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → ¬ 𝑚 ∥ 𝐴) |
28 | 27 | ralrimiva 2537 | . . . 4 ⊢ ((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) → ∀𝑚 ∈ (ℤ≥‘𝑛) ¬ 𝑚 ∥ 𝐴) |
29 | 28 | ex 114 | . . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) → ((abs‘𝐴) < 𝑛 → ∀𝑚 ∈ (ℤ≥‘𝑛) ¬ 𝑚 ∥ 𝐴)) |
30 | 29 | reximdva 2566 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → (∃𝑛 ∈ ℕ (abs‘𝐴) < 𝑛 → ∃𝑛 ∈ ℕ ∀𝑚 ∈ (ℤ≥‘𝑛) ¬ 𝑚 ∥ 𝐴)) |
31 | 5, 30 | mpd 13 | 1 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → ∃𝑛 ∈ ℕ ∀𝑚 ∈ (ℤ≥‘𝑛) ¬ 𝑚 ∥ 𝐴) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ↔ wb 104 ∧ w3a 967 ∈ wcel 2135 ≠ wne 2334 ∀wral 2442 ∃wrex 2443 class class class wbr 3976 ‘cfv 5182 ℝcr 7743 0cc0 7744 < clt 7924 ≤ cle 7925 ℕcn 8848 ℤcz 9182 ℤ≥cuz 9457 abscabs 10925 ∥ cdvds 11713 |
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-13 2137 ax-14 2138 ax-ext 2146 ax-coll 4091 ax-sep 4094 ax-nul 4102 ax-pow 4147 ax-pr 4181 ax-un 4405 ax-setind 4508 ax-iinf 4559 ax-cnex 7835 ax-resscn 7836 ax-1cn 7837 ax-1re 7838 ax-icn 7839 ax-addcl 7840 ax-addrcl 7841 ax-mulcl 7842 ax-mulrcl 7843 ax-addcom 7844 ax-mulcom 7845 ax-addass 7846 ax-mulass 7847 ax-distr 7848 ax-i2m1 7849 ax-0lt1 7850 ax-1rid 7851 ax-0id 7852 ax-rnegex 7853 ax-precex 7854 ax-cnre 7855 ax-pre-ltirr 7856 ax-pre-ltwlin 7857 ax-pre-lttrn 7858 ax-pre-apti 7859 ax-pre-ltadd 7860 ax-pre-mulgt0 7861 ax-pre-mulext 7862 ax-arch 7863 ax-caucvg 7864 |
This theorem depends on definitions: df-bi 116 df-dc 825 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-nel 2430 df-ral 2447 df-rex 2448 df-reu 2449 df-rmo 2450 df-rab 2451 df-v 2723 df-sbc 2947 df-csb 3041 df-dif 3113 df-un 3115 df-in 3117 df-ss 3124 df-nul 3405 df-if 3516 df-pw 3555 df-sn 3576 df-pr 3577 df-op 3579 df-uni 3784 df-int 3819 df-iun 3862 df-br 3977 df-opab 4038 df-mpt 4039 df-tr 4075 df-id 4265 df-po 4268 df-iso 4269 df-iord 4338 df-on 4340 df-ilim 4341 df-suc 4343 df-iom 4562 df-xp 4604 df-rel 4605 df-cnv 4606 df-co 4607 df-dm 4608 df-rn 4609 df-res 4610 df-ima 4611 df-iota 5147 df-fun 5184 df-fn 5185 df-f 5186 df-f1 5187 df-fo 5188 df-f1o 5189 df-fv 5190 df-riota 5792 df-ov 5839 df-oprab 5840 df-mpo 5841 df-1st 6100 df-2nd 6101 df-recs 6264 df-frec 6350 df-pnf 7926 df-mnf 7927 df-xr 7928 df-ltxr 7929 df-le 7930 df-sub 8062 df-neg 8063 df-reap 8464 df-ap 8471 df-div 8560 df-inn 8849 df-2 8907 df-3 8908 df-4 8909 df-n0 9106 df-z 9183 df-uz 9458 df-q 9549 df-rp 9581 df-seqfrec 10371 df-exp 10445 df-cj 10770 df-re 10771 df-im 10772 df-rsqrt 10926 df-abs 10927 df-dvds 11714 |
This theorem is referenced by: gcdsupex 11875 gcdsupcl 11876 |
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