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Mirrors > Home > MPE Home > Th. List > Mathboxes > nznngen | Structured version Visualization version GIF version |
Description: All positive integers in the set of multiples of n, nℤ, are the absolute value of n or greater. (Contributed by Steve Rodriguez, 20-Jan-2020.) |
Ref | Expression |
---|---|
nznngen.n | ⊢ (𝜑 → 𝑁 ∈ ℤ) |
Ref | Expression |
---|---|
nznngen | ⊢ (𝜑 → (( ∥ “ {𝑁}) ∩ ℕ) ⊆ (ℤ≥‘(abs‘𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reldvds 41822 | . . . . . . . 8 ⊢ Rel ∥ | |
2 | relimasn 5981 | . . . . . . . 8 ⊢ (Rel ∥ → ( ∥ “ {𝑁}) = {𝑥 ∣ 𝑁 ∥ 𝑥}) | |
3 | 1, 2 | ax-mp 5 | . . . . . . 7 ⊢ ( ∥ “ {𝑁}) = {𝑥 ∣ 𝑁 ∥ 𝑥} |
4 | 3 | ineq1i 4139 | . . . . . 6 ⊢ (( ∥ “ {𝑁}) ∩ ℕ) = ({𝑥 ∣ 𝑁 ∥ 𝑥} ∩ ℕ) |
5 | dfrab2 4241 | . . . . . 6 ⊢ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥} = ({𝑥 ∣ 𝑁 ∥ 𝑥} ∩ ℕ) | |
6 | 4, 5 | eqtr4i 2769 | . . . . 5 ⊢ (( ∥ “ {𝑁}) ∩ ℕ) = {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥} |
7 | 6 | eleq2i 2830 | . . . 4 ⊢ (𝑥 ∈ (( ∥ “ {𝑁}) ∩ ℕ) ↔ 𝑥 ∈ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥}) |
8 | rabid 3304 | . . . . . 6 ⊢ (𝑥 ∈ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥} ↔ (𝑥 ∈ ℕ ∧ 𝑁 ∥ 𝑥)) | |
9 | nznngen.n | . . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
10 | nnz 12272 | . . . . . . . . 9 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℤ) | |
11 | absdvdsb 15912 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℤ ∧ 𝑥 ∈ ℤ) → (𝑁 ∥ 𝑥 ↔ (abs‘𝑁) ∥ 𝑥)) | |
12 | 9, 10, 11 | syl2an 595 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ℕ) → (𝑁 ∥ 𝑥 ↔ (abs‘𝑁) ∥ 𝑥)) |
13 | zabscl 14953 | . . . . . . . . . 10 ⊢ (𝑁 ∈ ℤ → (abs‘𝑁) ∈ ℤ) | |
14 | 9, 13 | syl 17 | . . . . . . . . 9 ⊢ (𝜑 → (abs‘𝑁) ∈ ℤ) |
15 | dvdsle 15947 | . . . . . . . . 9 ⊢ (((abs‘𝑁) ∈ ℤ ∧ 𝑥 ∈ ℕ) → ((abs‘𝑁) ∥ 𝑥 → (abs‘𝑁) ≤ 𝑥)) | |
16 | 14, 15 | sylan 579 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ℕ) → ((abs‘𝑁) ∥ 𝑥 → (abs‘𝑁) ≤ 𝑥)) |
17 | 12, 16 | sylbid 239 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ℕ) → (𝑁 ∥ 𝑥 → (abs‘𝑁) ≤ 𝑥)) |
18 | 17 | impr 454 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℕ ∧ 𝑁 ∥ 𝑥)) → (abs‘𝑁) ≤ 𝑥) |
19 | 8, 18 | sylan2b 593 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥}) → (abs‘𝑁) ≤ 𝑥) |
20 | 8 | simplbi 497 | . . . . . . 7 ⊢ (𝑥 ∈ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥} → 𝑥 ∈ ℕ) |
21 | 20 | nnzd 12354 | . . . . . 6 ⊢ (𝑥 ∈ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥} → 𝑥 ∈ ℤ) |
22 | eluz 12525 | . . . . . 6 ⊢ (((abs‘𝑁) ∈ ℤ ∧ 𝑥 ∈ ℤ) → (𝑥 ∈ (ℤ≥‘(abs‘𝑁)) ↔ (abs‘𝑁) ≤ 𝑥)) | |
23 | 14, 21, 22 | syl2an 595 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥}) → (𝑥 ∈ (ℤ≥‘(abs‘𝑁)) ↔ (abs‘𝑁) ≤ 𝑥)) |
24 | 19, 23 | mpbird 256 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ ℕ ∣ 𝑁 ∥ 𝑥}) → 𝑥 ∈ (ℤ≥‘(abs‘𝑁))) |
25 | 7, 24 | sylan2b 593 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (( ∥ “ {𝑁}) ∩ ℕ)) → 𝑥 ∈ (ℤ≥‘(abs‘𝑁))) |
26 | 25 | ex 412 | . 2 ⊢ (𝜑 → (𝑥 ∈ (( ∥ “ {𝑁}) ∩ ℕ) → 𝑥 ∈ (ℤ≥‘(abs‘𝑁)))) |
27 | 26 | ssrdv 3923 | 1 ⊢ (𝜑 → (( ∥ “ {𝑁}) ∩ ℕ) ⊆ (ℤ≥‘(abs‘𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 {cab 2715 {crab 3067 ∩ cin 3882 ⊆ wss 3883 {csn 4558 class class class wbr 5070 “ cima 5583 Rel wrel 5585 ‘cfv 6418 ≤ cle 10941 ℕcn 11903 ℤcz 12249 ℤ≥cuz 12511 abscabs 14873 ∥ cdvds 15891 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-sup 9131 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-z 12250 df-uz 12512 df-rp 12660 df-seq 13650 df-exp 13711 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-dvds 15892 |
This theorem is referenced by: (None) |
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