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Mirrors > Home > MPE Home > Th. List > Mathboxes > hashnzfz2 | Structured version Visualization version GIF version |
Description: Special case of hashnzfz 41827: the count of multiples in nℤ, n greater than one, restricted to an interval starting at two. (Contributed by Steve Rodriguez, 20-Jan-2020.) |
Ref | Expression |
---|---|
hashnzfz2.n | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘2)) |
hashnzfz2.k | ⊢ (𝜑 → 𝐾 ∈ ℕ) |
Ref | Expression |
---|---|
hashnzfz2 | ⊢ (𝜑 → (♯‘(( ∥ “ {𝑁}) ∩ (2...𝐾))) = (⌊‘(𝐾 / 𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2nn 11976 | . . . . 5 ⊢ 2 ∈ ℕ | |
2 | uznnssnn 12564 | . . . . 5 ⊢ (2 ∈ ℕ → (ℤ≥‘2) ⊆ ℕ) | |
3 | 1, 2 | ax-mp 5 | . . . 4 ⊢ (ℤ≥‘2) ⊆ ℕ |
4 | hashnzfz2.n | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘2)) | |
5 | 3, 4 | sselid 3915 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ) |
6 | 2z 12282 | . . . 4 ⊢ 2 ∈ ℤ | |
7 | 6 | a1i 11 | . . 3 ⊢ (𝜑 → 2 ∈ ℤ) |
8 | hashnzfz2.k | . . . 4 ⊢ (𝜑 → 𝐾 ∈ ℕ) | |
9 | nnuz 12550 | . . . . 5 ⊢ ℕ = (ℤ≥‘1) | |
10 | 2m1e1 12029 | . . . . . 6 ⊢ (2 − 1) = 1 | |
11 | 10 | fveq2i 6759 | . . . . 5 ⊢ (ℤ≥‘(2 − 1)) = (ℤ≥‘1) |
12 | 9, 11 | eqtr4i 2769 | . . . 4 ⊢ ℕ = (ℤ≥‘(2 − 1)) |
13 | 8, 12 | eleqtrdi 2849 | . . 3 ⊢ (𝜑 → 𝐾 ∈ (ℤ≥‘(2 − 1))) |
14 | 5, 7, 13 | hashnzfz 41827 | . 2 ⊢ (𝜑 → (♯‘(( ∥ “ {𝑁}) ∩ (2...𝐾))) = ((⌊‘(𝐾 / 𝑁)) − (⌊‘((2 − 1) / 𝑁)))) |
15 | 10 | oveq1i 7265 | . . . . 5 ⊢ ((2 − 1) / 𝑁) = (1 / 𝑁) |
16 | 15 | fveq2i 6759 | . . . 4 ⊢ (⌊‘((2 − 1) / 𝑁)) = (⌊‘(1 / 𝑁)) |
17 | 0red 10909 | . . . . . 6 ⊢ (𝜑 → 0 ∈ ℝ) | |
18 | 5 | nnrecred 11954 | . . . . . 6 ⊢ (𝜑 → (1 / 𝑁) ∈ ℝ) |
19 | 5 | nnred 11918 | . . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ ℝ) |
20 | 5 | nngt0d 11952 | . . . . . . 7 ⊢ (𝜑 → 0 < 𝑁) |
21 | 19, 20 | recgt0d 11839 | . . . . . 6 ⊢ (𝜑 → 0 < (1 / 𝑁)) |
22 | 17, 18, 21 | ltled 11053 | . . . . 5 ⊢ (𝜑 → 0 ≤ (1 / 𝑁)) |
23 | eluzle 12524 | . . . . . . . . . 10 ⊢ (𝑁 ∈ (ℤ≥‘2) → 2 ≤ 𝑁) | |
24 | 4, 23 | syl 17 | . . . . . . . . 9 ⊢ (𝜑 → 2 ≤ 𝑁) |
25 | 5 | nnzd 12354 | . . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℤ) |
26 | zlem1lt 12302 | . . . . . . . . . 10 ⊢ ((2 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (2 ≤ 𝑁 ↔ (2 − 1) < 𝑁)) | |
27 | 6, 25, 26 | sylancr 586 | . . . . . . . . 9 ⊢ (𝜑 → (2 ≤ 𝑁 ↔ (2 − 1) < 𝑁)) |
28 | 24, 27 | mpbid 231 | . . . . . . . 8 ⊢ (𝜑 → (2 − 1) < 𝑁) |
29 | 10, 28 | eqbrtrrid 5106 | . . . . . . 7 ⊢ (𝜑 → 1 < 𝑁) |
30 | 5 | nnrpd 12699 | . . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℝ+) |
31 | 30 | recgt1d 12715 | . . . . . . 7 ⊢ (𝜑 → (1 < 𝑁 ↔ (1 / 𝑁) < 1)) |
32 | 29, 31 | mpbid 231 | . . . . . 6 ⊢ (𝜑 → (1 / 𝑁) < 1) |
33 | 0p1e1 12025 | . . . . . 6 ⊢ (0 + 1) = 1 | |
34 | 32, 33 | breqtrrdi 5112 | . . . . 5 ⊢ (𝜑 → (1 / 𝑁) < (0 + 1)) |
35 | 0z 12260 | . . . . . 6 ⊢ 0 ∈ ℤ | |
36 | flbi 13464 | . . . . . 6 ⊢ (((1 / 𝑁) ∈ ℝ ∧ 0 ∈ ℤ) → ((⌊‘(1 / 𝑁)) = 0 ↔ (0 ≤ (1 / 𝑁) ∧ (1 / 𝑁) < (0 + 1)))) | |
37 | 18, 35, 36 | sylancl 585 | . . . . 5 ⊢ (𝜑 → ((⌊‘(1 / 𝑁)) = 0 ↔ (0 ≤ (1 / 𝑁) ∧ (1 / 𝑁) < (0 + 1)))) |
38 | 22, 34, 37 | mpbir2and 709 | . . . 4 ⊢ (𝜑 → (⌊‘(1 / 𝑁)) = 0) |
39 | 16, 38 | syl5eq 2791 | . . 3 ⊢ (𝜑 → (⌊‘((2 − 1) / 𝑁)) = 0) |
40 | 39 | oveq2d 7271 | . 2 ⊢ (𝜑 → ((⌊‘(𝐾 / 𝑁)) − (⌊‘((2 − 1) / 𝑁))) = ((⌊‘(𝐾 / 𝑁)) − 0)) |
41 | 8 | nnred 11918 | . . . . . 6 ⊢ (𝜑 → 𝐾 ∈ ℝ) |
42 | 41, 5 | nndivred 11957 | . . . . 5 ⊢ (𝜑 → (𝐾 / 𝑁) ∈ ℝ) |
43 | 42 | flcld 13446 | . . . 4 ⊢ (𝜑 → (⌊‘(𝐾 / 𝑁)) ∈ ℤ) |
44 | 43 | zcnd 12356 | . . 3 ⊢ (𝜑 → (⌊‘(𝐾 / 𝑁)) ∈ ℂ) |
45 | 44 | subid1d 11251 | . 2 ⊢ (𝜑 → ((⌊‘(𝐾 / 𝑁)) − 0) = (⌊‘(𝐾 / 𝑁))) |
46 | 14, 40, 45 | 3eqtrd 2782 | 1 ⊢ (𝜑 → (♯‘(( ∥ “ {𝑁}) ∩ (2...𝐾))) = (⌊‘(𝐾 / 𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∩ cin 3882 ⊆ wss 3883 {csn 4558 class class class wbr 5070 “ cima 5583 ‘cfv 6418 (class class class)co 7255 ℝcr 10801 0cc0 10802 1c1 10803 + caddc 10805 < clt 10940 ≤ cle 10941 − cmin 11135 / cdiv 11562 ℕcn 11903 2c2 11958 ℤcz 12249 ℤ≥cuz 12511 ...cfz 13168 ⌊cfl 13438 ♯chash 13972 ∥ 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-int 4877 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-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-card 9628 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-n0 12164 df-z 12250 df-uz 12512 df-rp 12660 df-fz 13169 df-fl 13440 df-hash 13973 df-dvds 15892 |
This theorem is referenced by: (None) |
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