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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 107 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → 𝐴 ∈ ℤ) | |
2 | 1 | zcnd 8470 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → 𝐴 ∈ ℂ) |
3 | 2 | abscld 10067 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ) |
4 | arch 8285 | . . 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 475 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) ∈ ℝ) |
7 | simpllr 500 | . . . . . . . . 9 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑛 ∈ ℕ) | |
8 | 7 | nnred 8052 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑛 ∈ ℝ) |
9 | eluzelz 8628 | . . . . . . . . . 10 ⊢ (𝑚 ∈ (ℤ≥‘𝑛) → 𝑚 ∈ ℤ) | |
10 | 9 | adantl 271 | . . . . . . . . 9 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑚 ∈ ℤ) |
11 | 10 | zred 8469 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑚 ∈ ℝ) |
12 | simplr 496 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) < 𝑛) | |
13 | eluzle 8631 | . . . . . . . . 9 ⊢ (𝑚 ∈ (ℤ≥‘𝑛) → 𝑛 ≤ 𝑚) | |
14 | 13 | adantl 271 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝑛 ≤ 𝑚) |
15 | 6, 8, 11, 12, 14 | ltletrd 7527 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) < 𝑚) |
16 | zabscl 9972 | . . . . . . . . 9 ⊢ (𝐴 ∈ ℤ → (abs‘𝐴) ∈ ℤ) | |
17 | 16 | ad4antr 477 | . . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → (abs‘𝐴) ∈ ℤ) |
18 | zltnle 8397 | . . . . . . . 8 ⊢ (((abs‘𝐴) ∈ ℤ ∧ 𝑚 ∈ ℤ) → ((abs‘𝐴) < 𝑚 ↔ ¬ 𝑚 ≤ (abs‘𝐴))) | |
19 | 17, 10, 18 | syl2anc 403 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → ((abs‘𝐴) < 𝑚 ↔ ¬ 𝑚 ≤ (abs‘𝐴))) |
20 | 15, 19 | mpbid 145 | . . . . . 6 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → ¬ 𝑚 ≤ (abs‘𝐴)) |
21 | 1 | ad3antrrr 475 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝐴 ∈ ℤ) |
22 | simplr 496 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) → 𝐴 ≠ 0) | |
23 | 22 | ad2antrr 471 | . . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) ∧ 𝑚 ∈ (ℤ≥‘𝑛)) → 𝐴 ≠ 0) |
24 | dvdsleabs 10245 | . . . . . . . 8 ⊢ ((𝑚 ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → (𝑚 ∥ 𝐴 → 𝑚 ≤ (abs‘𝐴))) | |
25 | 24 | con3d 593 | . . . . . . 7 ⊢ ((𝑚 ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) → (¬ 𝑚 ≤ (abs‘𝐴) → ¬ 𝑚 ∥ 𝐴)) |
26 | 10, 21, 23, 25 | syl3anc 1169 | . . . . . 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 2434 | . . . 4 ⊢ ((((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) ∧ (abs‘𝐴) < 𝑛) → ∀𝑚 ∈ (ℤ≥‘𝑛) ¬ 𝑚 ∥ 𝐴) |
29 | 28 | ex 113 | . . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ) → ((abs‘𝐴) < 𝑛 → ∀𝑚 ∈ (ℤ≥‘𝑛) ¬ 𝑚 ∥ 𝐴)) |
30 | 29 | reximdva 2463 | . 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 102 ↔ wb 103 ∧ w3a 919 ∈ wcel 1433 ≠ wne 2245 ∀wral 2348 ∃wrex 2349 class class class wbr 3785 ‘cfv 4922 ℝcr 6980 0cc0 6981 < clt 7153 ≤ cle 7154 ℕcn 8039 ℤcz 8351 ℤ≥cuz 8619 abscabs 9883 ∥ cdvds 10195 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-coll 3893 ax-sep 3896 ax-nul 3904 ax-pow 3948 ax-pr 3964 ax-un 4188 ax-setind 4280 ax-iinf 4329 ax-cnex 7067 ax-resscn 7068 ax-1cn 7069 ax-1re 7070 ax-icn 7071 ax-addcl 7072 ax-addrcl 7073 ax-mulcl 7074 ax-mulrcl 7075 ax-addcom 7076 ax-mulcom 7077 ax-addass 7078 ax-mulass 7079 ax-distr 7080 ax-i2m1 7081 ax-0lt1 7082 ax-1rid 7083 ax-0id 7084 ax-rnegex 7085 ax-precex 7086 ax-cnre 7087 ax-pre-ltirr 7088 ax-pre-ltwlin 7089 ax-pre-lttrn 7090 ax-pre-apti 7091 ax-pre-ltadd 7092 ax-pre-mulgt0 7093 ax-pre-mulext 7094 ax-arch 7095 ax-caucvg 7096 |
This theorem depends on definitions: df-bi 115 df-dc 776 df-3or 920 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-nel 2340 df-ral 2353 df-rex 2354 df-reu 2355 df-rmo 2356 df-rab 2357 df-v 2603 df-sbc 2816 df-csb 2909 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-nul 3252 df-if 3352 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-int 3637 df-iun 3680 df-br 3786 df-opab 3840 df-mpt 3841 df-tr 3876 df-id 4048 df-po 4051 df-iso 4052 df-iord 4121 df-on 4123 df-suc 4126 df-iom 4332 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-dm 4373 df-rn 4374 df-res 4375 df-ima 4376 df-iota 4887 df-fun 4924 df-fn 4925 df-f 4926 df-f1 4927 df-fo 4928 df-f1o 4929 df-fv 4930 df-riota 5488 df-ov 5535 df-oprab 5536 df-mpt2 5537 df-1st 5787 df-2nd 5788 df-recs 5943 df-frec 6001 df-pnf 7155 df-mnf 7156 df-xr 7157 df-ltxr 7158 df-le 7159 df-sub 7281 df-neg 7282 df-reap 7675 df-ap 7682 df-div 7761 df-inn 8040 df-2 8098 df-3 8099 df-4 8100 df-n0 8289 df-z 8352 df-uz 8620 df-q 8705 df-rp 8735 df-iseq 9432 df-iexp 9476 df-cj 9729 df-re 9730 df-im 9731 df-rsqrt 9884 df-abs 9885 df-dvds 10196 |
This theorem is referenced by: gcdsupex 10349 gcdsupcl 10350 |
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