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Theorem pcbcctr 27160

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 12286	. . . . 5 ⊢ 2 ∈ ℕ
2		nnmulcl 12237	. . . . 5 ⊢ ((2 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (2 · 𝑁) ∈ ℕ)
3	1, 2	mpan 687	. . . 4 ⊢ (𝑁 ∈ ℕ → (2 · 𝑁) ∈ ℕ)
4	3	adantr 480	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → (2 · 𝑁) ∈ ℕ)
5		nnnn0 12480	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
6		fzctr 13616	. . . . 5 ⊢ (𝑁 ∈ ℕ₀ → 𝑁 ∈ (0...(2 · 𝑁)))
7	5, 6	syl 17	. . . 4 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ (0...(2 · 𝑁)))
8	7	adantr 480	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑁 ∈ (0...(2 · 𝑁)))
9		simpr 484	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℙ)
10		pcbc 16840	. . 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 12221	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ)
13	12	2timesd 12456	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → (2 · 𝑁) = (𝑁 + 𝑁))
14	12, 12, 13	mvrladdd 11628	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → ((2 · 𝑁) − 𝑁) = 𝑁)
15	14	fvoveq1d 7426	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) = (⌊‘(𝑁 / (𝑃↑𝑘))))
16	15	oveq1d 7419	. . . . . 6 ⊢ (𝑁 ∈ ℕ → ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))) = ((⌊‘(𝑁 / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))))
17	16	ad2antrr 723	. . . . 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 12220	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ)
19	18	ad2antrr 723	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → 𝑁 ∈ ℝ)
20		prmnn 16616	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
21	20	adantl 481	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℕ)
22		elfznn 13533	. . . . . . . . . . 11 ⊢ (𝑘 ∈ (1...(2 · 𝑁)) → 𝑘 ∈ ℕ)
23	22	nnnn0d 12533	. . . . . . . . . 10 ⊢ (𝑘 ∈ (1...(2 · 𝑁)) → 𝑘 ∈ ℕ₀)
24		nnexpcl 14043	. . . . . . . . . 10 ⊢ ((𝑃 ∈ ℕ ∧ 𝑘 ∈ ℕ₀) → (𝑃↑𝑘) ∈ ℕ)
25	21, 23, 24	syl2an 595	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (𝑃↑𝑘) ∈ ℕ)
26	19, 25	nndivred 12267	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (𝑁 / (𝑃↑𝑘)) ∈ ℝ)
27	26	flcld 13766	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (⌊‘(𝑁 / (𝑃↑𝑘))) ∈ ℤ)
28	27	zcnd 12668	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (⌊‘(𝑁 / (𝑃↑𝑘))) ∈ ℂ)
29	28	2timesd 12456	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → (2 · (⌊‘(𝑁 / (𝑃↑𝑘)))) = ((⌊‘(𝑁 / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))))
30	17, 29	eqtr4d 2769	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) ∧ 𝑘 ∈ (1...(2 · 𝑁))) → ((⌊‘(((2 · 𝑁) − 𝑁) / (𝑃↑𝑘))) + (⌊‘(𝑁 / (𝑃↑𝑘)))) = (2 · (⌊‘(𝑁 / (𝑃↑𝑘)))))
31	30	oveq2d 7420	. . 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 15653	. 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 2766	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 395 = wceq 1533 ∈ wcel 2098 ‘cfv 6536 (class class class)co 7404 ℝcr 11108 0cc0 11109 1c1 11110 + caddc 11112 · cmul 11114 − cmin 11445 / cdiv 11872 ℕcn 12213 2c2 12268 ℕ₀cn0 12473 ...cfz 13487 ⌊cfl 13758 ↑cexp 14030 Ccbc 14265 Σcsu 15636 ℙcprime 16613 pCnt cpc 16776

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 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 ax-inf2 9635 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-int 4944 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-se 5625 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-isom 6545 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7852 df-1st 7971 df-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-1o 8464 df-2o 8465 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-fin 8942 df-sup 9436 df-inf 9437 df-oi 9504 df-card 9933 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-div 11873 df-nn 12214 df-2 12276 df-3 12277 df-n0 12474 df-z 12560 df-uz 12824 df-q 12934 df-rp 12978 df-fz 13488 df-fzo 13631 df-fl 13760 df-mod 13838 df-seq 13970 df-exp 14031 df-fac 14237 df-bc 14266 df-hash 14294 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-clim 15436 df-sum 15637 df-dvds 16203 df-gcd 16441 df-prm 16614 df-pc 16777

This theorem is referenced by: bposlem1 27168 bposlem2 27169

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