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Theorem pcbcctr 27227

Description: Prime count of a central binomial coefficient. (Contributed by Mario Carneiro, 12-Mar-2014.)

**Assertion**
Ref	Expression
pcbcctr	⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → (𝑃 pCnt ((2 · 𝑁)C𝑁)) = Σ𝑘 ∈ (1...(2 · 𝑁))((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − (2 · (⌊‘(𝑁 / (𝑃↑𝑘))))))

Distinct variable groups: 𝑘,𝑁 𝑃,𝑘

**Proof of Theorem pcbcctr**
Step	Hyp	Ref	Expression
1		2nn 12321	. . . . 5 ⊢ 2 ∈ ℕ
2		nnmulcl 12272	. . . . 5 ⊢ ((2 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (2 · 𝑁) ∈ ℕ)
3	1, 2	mpan 688	. . . 4 ⊢ (𝑁 ∈ ℕ → (2 · 𝑁) ∈ ℕ)
4	3	adantr 479	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → (2 · 𝑁) ∈ ℕ)
5		nnnn0 12515	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
6		fzctr 13651	. . . . 5 ⊢ (𝑁 ∈ ℕ₀ → 𝑁 ∈ (0...(2 · 𝑁)))
7	5, 6	syl 17	. . . 4 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ (0...(2 · 𝑁)))
8	7	adantr 479	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑁 ∈ (0...(2 · 𝑁)))
9		simpr 483	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℙ)
10		pcbc 16874	. . 3 ⊢ (((2 · 𝑁) ∈ ℕ ∧ 𝑁 ∈ (0...(2 · 𝑁)) ∧ 𝑃 ∈ ℙ) → (𝑃 pCnt ((2 · 𝑁)C𝑁)) = Σ𝑘 ∈ (1...(2 · 𝑁))((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘))))))
11	4, 8, 9, 10	syl3anc 1368	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → (𝑃 pCnt ((2 · 𝑁)C𝑁)) = Σ𝑘 ∈ (1...(2 · 𝑁))((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘))))))
12		nncn 12256	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ)
13	12	2timesd 12491	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → (2 · 𝑁) = (𝑁 + 𝑁))
14	12, 12, 13	mvrladdd 11663	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → ((2 · 𝑁) − 𝑁) = 𝑁)
15	14	fvoveq1d 7446	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) = (⌊‘(𝑁 / (𝑃↑𝑘))))
16	15	oveq1d 7439	. . . . . 6 ⊢ (𝑁 ∈ ℕ → ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))) = ((⌊‘(𝑁 / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))))
17	16	ad2antrr 724	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))) = ((⌊‘(𝑁 / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))))
18		nnre 12255	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ)
19	18	ad2antrr 724	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → 𝑁 ∈ ℝ)
20		prmnn 16650	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
21	20	adantl 480	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℕ)
22		elfznn 13568	. . . . . . . . . . 11 ⊢ (𝑘 ∈ (1...(2 · 𝑁)) → 𝑘 ∈ ℕ)
23	22	nnnn0d 12568	. . . . . . . . . 10 ⊢ (𝑘 ∈ (1...(2 · 𝑁)) → 𝑘 ∈ ℕ₀)
24		nnexpcl 14077	. . . . . . . . . 10 ⊢ ((𝑃 ∈ ℕ ∧ 𝑘 ∈ ℕ₀) → (𝑃↑𝑘) ∈ ℕ)
25	21, 23, 24	syl2an 594	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (𝑃↑𝑘) ∈ ℕ)
26	19, 25	nndivred 12302	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (𝑁 / (𝑃↑𝑘)) ∈ ℝ)
27	26	flcld 13801	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (⌊‘(𝑁 / (𝑃↑𝑘))) ∈ ℤ)
28	27	zcnd 12703	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (⌊‘(𝑁 / (𝑃↑𝑘))) ∈ ℂ)
29	28	2timesd 12491	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (2 · (⌊‘(𝑁 / (𝑃↑𝑘)))) = ((⌊‘(𝑁 / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))))
30	17, 29	eqtr4d 2770	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))) = (2 · (⌊‘(𝑁 / (𝑃↑𝑘)))))
31	30	oveq2d 7440	. . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → ((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘))))) = ((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − (2 · (⌊‘(𝑁 / (𝑃↑𝑘))))))
32	31	sumeq2dv 15687	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → Σ𝑘 ∈ (1...(2 · 𝑁))((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘))))) = Σ𝑘 ∈ (1...(2 · 𝑁))((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − (2 · (⌊‘(𝑁 / (𝑃↑𝑘))))))
33	11, 32	eqtrd 2767	1 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → (𝑃 pCnt ((2 · 𝑁)C𝑁)) = Σ𝑘 ∈ (1...(2 · 𝑁))((⌊‘((2 · 𝑁) / (𝑃↑𝑘))) − (2 · (⌊‘(𝑁 / (𝑃↑𝑘))))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 = wceq 1533 ∈ wcel 2098 ‘cfv 6551 (class class class)co 7424 ℝcr 11143 0cc0 11144 1c1 11145 + caddc 11147 · cmul 11149 − cmin 11480 / cdiv 11907 ℕcn 12248 2c2 12303 ℕ₀cn0 12508 ...cfz 13522 ⌊cfl 13793 ↑cexp 14064 Ccbc 14299 Σcsu 15670 ℙcprime 16647 pCnt cpc 16810

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2698 ax-rep 5287 ax-sep 5301 ax-nul 5308 ax-pow 5367 ax-pr 5431 ax-un 7744 ax-inf2 9670 ax-cnex 11200 ax-resscn 11201 ax-1cn 11202 ax-icn 11203 ax-addcl 11204 ax-addrcl 11205 ax-mulcl 11206 ax-mulrcl 11207 ax-mulcom 11208 ax-addass 11209 ax-mulass 11210 ax-distr 11211 ax-i2m1 11212 ax-1ne0 11213 ax-1rid 11214 ax-rnegex 11215 ax-rrecex 11216 ax-cnre 11217 ax-pre-lttri 11218 ax-pre-lttrn 11219 ax-pre-ltadd 11220 ax-pre-mulgt0 11221 ax-pre-sup 11222

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4325 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4911 df-int 4952 df-iun 5000 df-br 5151 df-opab 5213 df-mpt 5234 df-tr 5268 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5635 df-se 5636 df-we 5637 df-xp 5686 df-rel 5687 df-cnv 5688 df-co 5689 df-dm 5690 df-rn 5691 df-res 5692 df-ima 5693 df-pred 6308 df-ord 6375 df-on 6376 df-lim 6377 df-suc 6378 df-iota 6503 df-fun 6553 df-fn 6554 df-f 6555 df-f1 6556 df-fo 6557 df-f1o 6558 df-fv 6559 df-isom 6560 df-riota 7380 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7875 df-1st 7997 df-2nd 7998 df-frecs 8291 df-wrecs 8322 df-recs 8396 df-rdg 8435 df-1o 8491 df-2o 8492 df-er 8729 df-en 8969 df-dom 8970 df-sdom 8971 df-fin 8972 df-sup 9471 df-inf 9472 df-oi 9539 df-card 9968 df-pnf 11286 df-mnf 11287 df-xr 11288 df-ltxr 11289 df-le 11290 df-sub 11482 df-neg 11483 df-div 11908 df-nn 12249 df-2 12311 df-3 12312 df-n0 12509 df-z 12595 df-uz 12859 df-q 12969 df-rp 13013 df-fz 13523 df-fzo 13666 df-fl 13795 df-mod 13873 df-seq 14005 df-exp 14065 df-fac 14271 df-bc 14300 df-hash 14328 df-cj 15084 df-re 15085 df-im 15086 df-sqrt 15220 df-abs 15221 df-clim 15470 df-sum 15671 df-dvds 16237 df-gcd 16475 df-prm 16648 df-pc 16811

This theorem is referenced by: bposlem1 27235 bposlem2 27236

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