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Mirrors > Home > MPE Home > Th. List > muval1 | Structured version Visualization version GIF version |
Description: The value of the Möbius function at a non-squarefree number. (Contributed by Mario Carneiro, 21-Sep-2014.) |
Ref | Expression |
---|---|
muval1 | ⊢ ((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) → (μ‘𝐴) = 0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | muval 26281 | . . 3 ⊢ (𝐴 ∈ ℕ → (μ‘𝐴) = if(∃𝑝 ∈ ℙ (𝑝↑2) ∥ 𝐴, 0, (-1↑(♯‘{𝑝 ∈ ℙ ∣ 𝑝 ∥ 𝐴})))) | |
2 | 1 | 3ad2ant1 1132 | . 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) → (μ‘𝐴) = if(∃𝑝 ∈ ℙ (𝑝↑2) ∥ 𝐴, 0, (-1↑(♯‘{𝑝 ∈ ℙ ∣ 𝑝 ∥ 𝐴})))) |
3 | exprmfct 16409 | . . . . 5 ⊢ (𝑃 ∈ (ℤ≥‘2) → ∃𝑝 ∈ ℙ 𝑝 ∥ 𝑃) | |
4 | 3 | 3ad2ant2 1133 | . . . 4 ⊢ ((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) → ∃𝑝 ∈ ℙ 𝑝 ∥ 𝑃) |
5 | prmnn 16379 | . . . . . . 7 ⊢ (𝑝 ∈ ℙ → 𝑝 ∈ ℕ) | |
6 | simpl2 1191 | . . . . . . . . 9 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → 𝑃 ∈ (ℤ≥‘2)) | |
7 | eluz2b2 12661 | . . . . . . . . 9 ⊢ (𝑃 ∈ (ℤ≥‘2) ↔ (𝑃 ∈ ℕ ∧ 1 < 𝑃)) | |
8 | 6, 7 | sylib 217 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → (𝑃 ∈ ℕ ∧ 1 < 𝑃)) |
9 | 8 | simpld 495 | . . . . . . 7 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → 𝑃 ∈ ℕ) |
10 | dvdssqlem 16271 | . . . . . . 7 ⊢ ((𝑝 ∈ ℕ ∧ 𝑃 ∈ ℕ) → (𝑝 ∥ 𝑃 ↔ (𝑝↑2) ∥ (𝑃↑2))) | |
11 | 5, 9, 10 | syl2an2 683 | . . . . . 6 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → (𝑝 ∥ 𝑃 ↔ (𝑝↑2) ∥ (𝑃↑2))) |
12 | simpl3 1192 | . . . . . . 7 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → (𝑃↑2) ∥ 𝐴) | |
13 | prmz 16380 | . . . . . . . . . 10 ⊢ (𝑝 ∈ ℙ → 𝑝 ∈ ℤ) | |
14 | 13 | adantl 482 | . . . . . . . . 9 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → 𝑝 ∈ ℤ) |
15 | zsqcl 13848 | . . . . . . . . 9 ⊢ (𝑝 ∈ ℤ → (𝑝↑2) ∈ ℤ) | |
16 | 14, 15 | syl 17 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → (𝑝↑2) ∈ ℤ) |
17 | eluzelz 12592 | . . . . . . . . 9 ⊢ (𝑃 ∈ (ℤ≥‘2) → 𝑃 ∈ ℤ) | |
18 | zsqcl 13848 | . . . . . . . . 9 ⊢ (𝑃 ∈ ℤ → (𝑃↑2) ∈ ℤ) | |
19 | 6, 17, 18 | 3syl 18 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → (𝑃↑2) ∈ ℤ) |
20 | simpl1 1190 | . . . . . . . . 9 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → 𝐴 ∈ ℕ) | |
21 | 20 | nnzd 12425 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → 𝐴 ∈ ℤ) |
22 | dvdstr 16003 | . . . . . . . 8 ⊢ (((𝑝↑2) ∈ ℤ ∧ (𝑃↑2) ∈ ℤ ∧ 𝐴 ∈ ℤ) → (((𝑝↑2) ∥ (𝑃↑2) ∧ (𝑃↑2) ∥ 𝐴) → (𝑝↑2) ∥ 𝐴)) | |
23 | 16, 19, 21, 22 | syl3anc 1370 | . . . . . . 7 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → (((𝑝↑2) ∥ (𝑃↑2) ∧ (𝑃↑2) ∥ 𝐴) → (𝑝↑2) ∥ 𝐴)) |
24 | 12, 23 | mpan2d 691 | . . . . . 6 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → ((𝑝↑2) ∥ (𝑃↑2) → (𝑝↑2) ∥ 𝐴)) |
25 | 11, 24 | sylbid 239 | . . . . 5 ⊢ (((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) ∧ 𝑝 ∈ ℙ) → (𝑝 ∥ 𝑃 → (𝑝↑2) ∥ 𝐴)) |
26 | 25 | reximdva 3203 | . . . 4 ⊢ ((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) → (∃𝑝 ∈ ℙ 𝑝 ∥ 𝑃 → ∃𝑝 ∈ ℙ (𝑝↑2) ∥ 𝐴)) |
27 | 4, 26 | mpd 15 | . . 3 ⊢ ((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) → ∃𝑝 ∈ ℙ (𝑝↑2) ∥ 𝐴) |
28 | 27 | iftrued 4467 | . 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) → if(∃𝑝 ∈ ℙ (𝑝↑2) ∥ 𝐴, 0, (-1↑(♯‘{𝑝 ∈ ℙ ∣ 𝑝 ∥ 𝐴}))) = 0) |
29 | 2, 28 | eqtrd 2778 | 1 ⊢ ((𝐴 ∈ ℕ ∧ 𝑃 ∈ (ℤ≥‘2) ∧ (𝑃↑2) ∥ 𝐴) → (μ‘𝐴) = 0) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ∃wrex 3065 {crab 3068 ifcif 4459 class class class wbr 5074 ‘cfv 6433 (class class class)co 7275 0cc0 10871 1c1 10872 < clt 11009 -cneg 11206 ℕcn 11973 2c2 12028 ℤcz 12319 ℤ≥cuz 12582 ↑cexp 13782 ♯chash 14044 ∥ cdvds 15963 ℙcprime 16376 μcmu 26244 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-2o 8298 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-sup 9201 df-inf 9202 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-n0 12234 df-z 12320 df-uz 12583 df-rp 12731 df-fz 13240 df-fl 13512 df-mod 13590 df-seq 13722 df-exp 13783 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-dvds 15964 df-gcd 16202 df-prm 16377 df-mu 26250 |
This theorem is referenced by: (None) |
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