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Mirrors > Home > MPE Home > Th. List > Mathboxes > hashnzfz | Structured version Visualization version GIF version |
Description: Special case of hashdvds 16114: the count of multiples in nℤ restricted to an interval. (Contributed by Steve Rodriguez, 20-Jan-2020.) |
Ref | Expression |
---|---|
hashnzfz.n | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
hashnzfz.j | ⊢ (𝜑 → 𝐽 ∈ ℤ) |
hashnzfz.k | ⊢ (𝜑 → 𝐾 ∈ (ℤ≥‘(𝐽 − 1))) |
Ref | Expression |
---|---|
hashnzfz | ⊢ (𝜑 → (♯‘(( ∥ “ {𝑁}) ∩ (𝐽...𝐾))) = ((⌊‘(𝐾 / 𝑁)) − (⌊‘((𝐽 − 1) / 𝑁)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hashnzfz.n | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
2 | hashnzfz.j | . . 3 ⊢ (𝜑 → 𝐽 ∈ ℤ) | |
3 | hashnzfz.k | . . 3 ⊢ (𝜑 → 𝐾 ∈ (ℤ≥‘(𝐽 − 1))) | |
4 | 0zd 11996 | . . 3 ⊢ (𝜑 → 0 ∈ ℤ) | |
5 | 1, 2, 3, 4 | hashdvds 16114 | . 2 ⊢ (𝜑 → (♯‘{𝑥 ∈ (𝐽...𝐾) ∣ 𝑁 ∥ (𝑥 − 0)}) = ((⌊‘((𝐾 − 0) / 𝑁)) − (⌊‘(((𝐽 − 1) − 0) / 𝑁)))) |
6 | elfzelz 12911 | . . . . . . . . 9 ⊢ (𝑥 ∈ (𝐽...𝐾) → 𝑥 ∈ ℤ) | |
7 | 6 | zcnd 12091 | . . . . . . . 8 ⊢ (𝑥 ∈ (𝐽...𝐾) → 𝑥 ∈ ℂ) |
8 | 7 | subid1d 10988 | . . . . . . 7 ⊢ (𝑥 ∈ (𝐽...𝐾) → (𝑥 − 0) = 𝑥) |
9 | 8 | breq2d 5080 | . . . . . 6 ⊢ (𝑥 ∈ (𝐽...𝐾) → (𝑁 ∥ (𝑥 − 0) ↔ 𝑁 ∥ 𝑥)) |
10 | 9 | rabbiia 3474 | . . . . 5 ⊢ {𝑥 ∈ (𝐽...𝐾) ∣ 𝑁 ∥ (𝑥 − 0)} = {𝑥 ∈ (𝐽...𝐾) ∣ 𝑁 ∥ 𝑥} |
11 | dfrab3 4280 | . . . . 5 ⊢ {𝑥 ∈ (𝐽...𝐾) ∣ 𝑁 ∥ 𝑥} = ((𝐽...𝐾) ∩ {𝑥 ∣ 𝑁 ∥ 𝑥}) | |
12 | reldvds 40654 | . . . . . . . 8 ⊢ Rel ∥ | |
13 | relimasn 5954 | . . . . . . . 8 ⊢ (Rel ∥ → ( ∥ “ {𝑁}) = {𝑥 ∣ 𝑁 ∥ 𝑥}) | |
14 | 12, 13 | ax-mp 5 | . . . . . . 7 ⊢ ( ∥ “ {𝑁}) = {𝑥 ∣ 𝑁 ∥ 𝑥} |
15 | 14 | ineq2i 4188 | . . . . . 6 ⊢ ((𝐽...𝐾) ∩ ( ∥ “ {𝑁})) = ((𝐽...𝐾) ∩ {𝑥 ∣ 𝑁 ∥ 𝑥}) |
16 | incom 4180 | . . . . . 6 ⊢ ((𝐽...𝐾) ∩ ( ∥ “ {𝑁})) = (( ∥ “ {𝑁}) ∩ (𝐽...𝐾)) | |
17 | 15, 16 | eqtr3i 2848 | . . . . 5 ⊢ ((𝐽...𝐾) ∩ {𝑥 ∣ 𝑁 ∥ 𝑥}) = (( ∥ “ {𝑁}) ∩ (𝐽...𝐾)) |
18 | 10, 11, 17 | 3eqtri 2850 | . . . 4 ⊢ {𝑥 ∈ (𝐽...𝐾) ∣ 𝑁 ∥ (𝑥 − 0)} = (( ∥ “ {𝑁}) ∩ (𝐽...𝐾)) |
19 | 18 | fveq2i 6675 | . . 3 ⊢ (♯‘{𝑥 ∈ (𝐽...𝐾) ∣ 𝑁 ∥ (𝑥 − 0)}) = (♯‘(( ∥ “ {𝑁}) ∩ (𝐽...𝐾))) |
20 | 19 | a1i 11 | . 2 ⊢ (𝜑 → (♯‘{𝑥 ∈ (𝐽...𝐾) ∣ 𝑁 ∥ (𝑥 − 0)}) = (♯‘(( ∥ “ {𝑁}) ∩ (𝐽...𝐾)))) |
21 | eluzelz 12256 | . . . . . . 7 ⊢ (𝐾 ∈ (ℤ≥‘(𝐽 − 1)) → 𝐾 ∈ ℤ) | |
22 | 3, 21 | syl 17 | . . . . . 6 ⊢ (𝜑 → 𝐾 ∈ ℤ) |
23 | 22 | zcnd 12091 | . . . . 5 ⊢ (𝜑 → 𝐾 ∈ ℂ) |
24 | 23 | subid1d 10988 | . . . 4 ⊢ (𝜑 → (𝐾 − 0) = 𝐾) |
25 | 24 | fvoveq1d 7180 | . . 3 ⊢ (𝜑 → (⌊‘((𝐾 − 0) / 𝑁)) = (⌊‘(𝐾 / 𝑁))) |
26 | peano2zm 12028 | . . . . . . 7 ⊢ (𝐽 ∈ ℤ → (𝐽 − 1) ∈ ℤ) | |
27 | 2, 26 | syl 17 | . . . . . 6 ⊢ (𝜑 → (𝐽 − 1) ∈ ℤ) |
28 | 27 | zcnd 12091 | . . . . 5 ⊢ (𝜑 → (𝐽 − 1) ∈ ℂ) |
29 | 28 | subid1d 10988 | . . . 4 ⊢ (𝜑 → ((𝐽 − 1) − 0) = (𝐽 − 1)) |
30 | 29 | fvoveq1d 7180 | . . 3 ⊢ (𝜑 → (⌊‘(((𝐽 − 1) − 0) / 𝑁)) = (⌊‘((𝐽 − 1) / 𝑁))) |
31 | 25, 30 | oveq12d 7176 | . 2 ⊢ (𝜑 → ((⌊‘((𝐾 − 0) / 𝑁)) − (⌊‘(((𝐽 − 1) − 0) / 𝑁))) = ((⌊‘(𝐾 / 𝑁)) − (⌊‘((𝐽 − 1) / 𝑁)))) |
32 | 5, 20, 31 | 3eqtr3d 2866 | 1 ⊢ (𝜑 → (♯‘(( ∥ “ {𝑁}) ∩ (𝐽...𝐾))) = ((⌊‘(𝐾 / 𝑁)) − (⌊‘((𝐽 − 1) / 𝑁)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2114 {cab 2801 {crab 3144 ∩ cin 3937 {csn 4569 class class class wbr 5068 “ cima 5560 Rel wrel 5562 ‘cfv 6357 (class class class)co 7158 0cc0 10539 1c1 10540 − cmin 10872 / cdiv 11299 ℕcn 11640 ℤcz 11984 ℤ≥cuz 12246 ...cfz 12895 ⌊cfl 13163 ♯chash 13693 ∥ cdvds 15609 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616 ax-pre-sup 10617 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rmo 3148 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-int 4879 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-1st 7691 df-2nd 7692 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-1o 8104 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-fin 8515 df-sup 8908 df-inf 8909 df-card 9370 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-div 11300 df-nn 11641 df-n0 11901 df-z 11985 df-uz 12247 df-fz 12896 df-fl 13165 df-hash 13694 df-dvds 15610 |
This theorem is referenced by: hashnzfz2 40660 hashnzfzclim 40661 |
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