circlemethnat - Mathbox for Thierry Arnoux

	Mathbox for Thierry Arnoux		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > Mathboxes > circlemethnat		Structured version Visualization version GIF version

Theorem circlemethnat 34267

Description: The Hardy, Littlewood and Ramanujan Circle Method, Chapter 5.1 of [Nathanson] p. 123. This expresses 𝑅, the number of different ways a nonnegative integer 𝑁 can be represented as the sum of at most 𝑆 integers in the set 𝐴 as an integral of Vinogradov trigonometric sums. (Contributed by Thierry Arnoux, 13-Dec-2021.)

**Hypotheses**
Ref	Expression
circlemethnat.r	⊢ 𝑅 = (♯‘(𝐴(repr‘𝑆)𝑁))
circlemethnat.f	⊢ 𝐹 = ((((𝟭‘ℕ)‘𝐴)vts𝑁)‘𝑥)
circlemethnat.n	⊢ 𝑁 ∈ ℕ₀
circlemethnat.a	⊢ 𝐴 ⊆ ℕ
circlemethnat.s	⊢ 𝑆 ∈ ℕ

**Assertion**
Ref	Expression
circlemethnat	⊢ 𝑅 = ∫(0(,)1)((𝐹↑𝑆) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))) d𝑥

Distinct variable groups: 𝑥,𝐴 𝑥,𝑁 𝑥,𝑆 Allowed substitution hints: 𝑅(𝑥) 𝐹(𝑥)

Proof of Theorem circlemethnat Dummy variables 𝑎 𝑐 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		circlemethnat.r	. . . 4 ⊢ 𝑅 = (♯‘(𝐴(repr‘𝑆)𝑁))
2		nnex 12242	. . . . . . . . . . . . . 14 ⊢ ℕ ∈ V
3		circlemethnat.a	. . . . . . . . . . . . . 14 ⊢ 𝐴 ⊆ ℕ
4		indf 33628	. . . . . . . . . . . . . 14 ⊢ ((ℕ ∈ V ∧ 𝐴 ⊆ ℕ) → ((𝟭‘ℕ)‘𝐴):ℕ⟶{0, 1})
5	2, 3, 4	mp2an 691	. . . . . . . . . . . . 13 ⊢ ((𝟭‘ℕ)‘𝐴):ℕ⟶{0, 1}
6		pr01ssre 32581	. . . . . . . . . . . . . 14 ⊢ {0, 1} ⊆ ℝ
7		ax-resscn 11189	. . . . . . . . . . . . . 14 ⊢ ℝ ⊆ ℂ
8	6, 7	sstri 3987	. . . . . . . . . . . . 13 ⊢ {0, 1} ⊆ ℂ
9		fss 6733	. . . . . . . . . . . . 13 ⊢ ((((𝟭‘ℕ)‘𝐴):ℕ⟶{0, 1} ∧ {0, 1} ⊆ ℂ) → ((𝟭‘ℕ)‘𝐴):ℕ⟶ℂ)
10	5, 8, 9	mp2an 691	. . . . . . . . . . . 12 ⊢ ((𝟭‘ℕ)‘𝐴):ℕ⟶ℂ
11		cnex 11213	. . . . . . . . . . . . 13 ⊢ ℂ ∈ V
12	11, 2	elmap 8883	. . . . . . . . . . . 12 ⊢ (((𝟭‘ℕ)‘𝐴) ∈ (ℂ ↑_m ℕ) ↔ ((𝟭‘ℕ)‘𝐴):ℕ⟶ℂ)
13	10, 12	mpbir 230	. . . . . . . . . . 11 ⊢ ((𝟭‘ℕ)‘𝐴) ∈ (ℂ ↑_m ℕ)
14	13	elexi 3490	. . . . . . . . . 10 ⊢ ((𝟭‘ℕ)‘𝐴) ∈ V
15	14	fvconst2 7210	. . . . . . . . 9 ⊢ (𝑎 ∈ (0..^𝑆) → (((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎) = ((𝟭‘ℕ)‘𝐴))
16	15	adantl 481	. . . . . . . 8 ⊢ (((⊤ ∧ 𝑐 ∈ (ℕ(repr‘𝑆)𝑁)) ∧ 𝑎 ∈ (0..^𝑆)) → (((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎) = ((𝟭‘ℕ)‘𝐴))
17	16	fveq1d 6893	. . . . . . 7 ⊢ (((⊤ ∧ 𝑐 ∈ (ℕ(repr‘𝑆)𝑁)) ∧ 𝑎 ∈ (0..^𝑆)) → ((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)‘(𝑐‘𝑎)) = (((𝟭‘ℕ)‘𝐴)‘(𝑐‘𝑎)))
18	17	prodeq2dv 15893	. . . . . 6 ⊢ ((⊤ ∧ 𝑐 ∈ (ℕ(repr‘𝑆)𝑁)) → ∏𝑎 ∈ (0..^𝑆)((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)‘(𝑐‘𝑎)) = ∏𝑎 ∈ (0..^𝑆)(((𝟭‘ℕ)‘𝐴)‘(𝑐‘𝑎)))
19	18	sumeq2dv 15675	. . . . 5 ⊢ (⊤ → Σ𝑐 ∈ (ℕ(repr‘𝑆)𝑁)∏𝑎 ∈ (0..^𝑆)((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)‘(𝑐‘𝑎)) = Σ𝑐 ∈ (ℕ(repr‘𝑆)𝑁)∏𝑎 ∈ (0..^𝑆)(((𝟭‘ℕ)‘𝐴)‘(𝑐‘𝑎)))
20	3	a1i 11	. . . . . 6 ⊢ (⊤ → 𝐴 ⊆ ℕ)
21		circlemethnat.n	. . . . . . 7 ⊢ 𝑁 ∈ ℕ₀
22	21	a1i 11	. . . . . 6 ⊢ (⊤ → 𝑁 ∈ ℕ₀)
23		circlemethnat.s	. . . . . . . 8 ⊢ 𝑆 ∈ ℕ
24	23	a1i 11	. . . . . . 7 ⊢ (⊤ → 𝑆 ∈ ℕ)
25	24	nnnn0d 12556	. . . . . 6 ⊢ (⊤ → 𝑆 ∈ ℕ₀)
26	20, 22, 25	hashrepr 34251	. . . . 5 ⊢ (⊤ → (♯‘(𝐴(repr‘𝑆)𝑁)) = Σ𝑐 ∈ (ℕ(repr‘𝑆)𝑁)∏𝑎 ∈ (0..^𝑆)(((𝟭‘ℕ)‘𝐴)‘(𝑐‘𝑎)))
27	19, 26	eqtr4d 2771	. . . 4 ⊢ (⊤ → Σ𝑐 ∈ (ℕ(repr‘𝑆)𝑁)∏𝑎 ∈ (0..^𝑆)((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)‘(𝑐‘𝑎)) = (♯‘(𝐴(repr‘𝑆)𝑁)))
28	1, 27	eqtr4id 2787	. . 3 ⊢ (⊤ → 𝑅 = Σ𝑐 ∈ (ℕ(repr‘𝑆)𝑁)∏𝑎 ∈ (0..^𝑆)((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)‘(𝑐‘𝑎)))
29	13	fconst6 6781	. . . . 5 ⊢ ((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)}):(0..^𝑆)⟶(ℂ ↑_m ℕ)
30	29	a1i 11	. . . 4 ⊢ (⊤ → ((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)}):(0..^𝑆)⟶(ℂ ↑_m ℕ))
31	22, 24, 30	circlemeth 34266	. . 3 ⊢ (⊤ → Σ𝑐 ∈ (ℕ(repr‘𝑆)𝑁)∏𝑎 ∈ (0..^𝑆)((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)‘(𝑐‘𝑎)) = ∫(0(,)1)(∏𝑎 ∈ (0..^𝑆)(((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁)‘𝑥) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))) d𝑥)
32		fzofi 13965	. . . . . . . 8 ⊢ (0..^𝑆) ∈ Fin
33	32	a1i 11	. . . . . . 7 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → (0..^𝑆) ∈ Fin)
34		circlemethnat.f	. . . . . . . 8 ⊢ 𝐹 = ((((𝟭‘ℕ)‘𝐴)vts𝑁)‘𝑥)
35	21	a1i 11	. . . . . . . . 9 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → 𝑁 ∈ ℕ₀)
36		ioossre 13411	. . . . . . . . . . . 12 ⊢ (0(,)1) ⊆ ℝ
37	36, 7	sstri 3987	. . . . . . . . . . 11 ⊢ (0(,)1) ⊆ ℂ
38	37	a1i 11	. . . . . . . . . 10 ⊢ (⊤ → (0(,)1) ⊆ ℂ)
39	38	sselda 3978	. . . . . . . . 9 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → 𝑥 ∈ ℂ)
40	10	a1i 11	. . . . . . . . 9 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → ((𝟭‘ℕ)‘𝐴):ℕ⟶ℂ)
41	35, 39, 40	vtscl 34264	. . . . . . . 8 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → ((((𝟭‘ℕ)‘𝐴)vts𝑁)‘𝑥) ∈ ℂ)
42	34, 41	eqeltrid 2833	. . . . . . 7 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → 𝐹 ∈ ℂ)
43		fprodconst 15948	. . . . . . 7 ⊢ (((0..^𝑆) ∈ Fin ∧ 𝐹 ∈ ℂ) → ∏𝑎 ∈ (0..^𝑆)𝐹 = (𝐹↑(♯‘(0..^𝑆))))
44	33, 42, 43	syl2anc 583	. . . . . 6 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → ∏𝑎 ∈ (0..^𝑆)𝐹 = (𝐹↑(♯‘(0..^𝑆))))
45	15	adantl 481	. . . . . . . . . 10 ⊢ (((⊤ ∧ 𝑥 ∈ (0(,)1)) ∧ 𝑎 ∈ (0..^𝑆)) → (((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎) = ((𝟭‘ℕ)‘𝐴))
46	45	oveq1d 7429	. . . . . . . . 9 ⊢ (((⊤ ∧ 𝑥 ∈ (0(,)1)) ∧ 𝑎 ∈ (0..^𝑆)) → ((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁) = (((𝟭‘ℕ)‘𝐴)vts𝑁))
47	46	fveq1d 6893	. . . . . . . 8 ⊢ (((⊤ ∧ 𝑥 ∈ (0(,)1)) ∧ 𝑎 ∈ (0..^𝑆)) → (((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁)‘𝑥) = ((((𝟭‘ℕ)‘𝐴)vts𝑁)‘𝑥))
48	34, 47	eqtr4id 2787	. . . . . . 7 ⊢ (((⊤ ∧ 𝑥 ∈ (0(,)1)) ∧ 𝑎 ∈ (0..^𝑆)) → 𝐹 = (((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁)‘𝑥))
49	48	prodeq2dv 15893	. . . . . 6 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → ∏𝑎 ∈ (0..^𝑆)𝐹 = ∏𝑎 ∈ (0..^𝑆)(((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁)‘𝑥))
50	25	adantr 480	. . . . . . . 8 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → 𝑆 ∈ ℕ₀)
51		hashfzo0 14415	. . . . . . . 8 ⊢ (𝑆 ∈ ℕ₀ → (♯‘(0..^𝑆)) = 𝑆)
52	50, 51	syl 17	. . . . . . 7 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → (♯‘(0..^𝑆)) = 𝑆)
53	52	oveq2d 7430	. . . . . 6 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → (𝐹↑(♯‘(0..^𝑆))) = (𝐹↑𝑆))
54	44, 49, 53	3eqtr3d 2776	. . . . 5 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → ∏𝑎 ∈ (0..^𝑆)(((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁)‘𝑥) = (𝐹↑𝑆))
55	54	oveq1d 7429	. . . 4 ⊢ ((⊤ ∧ 𝑥 ∈ (0(,)1)) → (∏𝑎 ∈ (0..^𝑆)(((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁)‘𝑥) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))) = ((𝐹↑𝑆) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))))
56	55	itgeq2dv 25704	. . 3 ⊢ (⊤ → ∫(0(,)1)(∏𝑎 ∈ (0..^𝑆)(((((0..^𝑆) × {((𝟭‘ℕ)‘𝐴)})‘𝑎)vts𝑁)‘𝑥) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))) d𝑥 = ∫(0(,)1)((𝐹↑𝑆) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))) d𝑥)
57	28, 31, 56	3eqtrd 2772	. 2 ⊢ (⊤ → 𝑅 = ∫(0(,)1)((𝐹↑𝑆) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))) d𝑥)
58	57	mptru 1541	1 ⊢ 𝑅 = ∫(0(,)1)((𝐹↑𝑆) · (exp‘((i · (2 · π)) · (-𝑁 · 𝑥)))) d𝑥

Colors of variables: wff setvar class

Syntax hints: ∧ wa 395 = wceq 1534 ⊤wtru 1535 ∈ wcel 2099 Vcvv 3470 ⊆ wss 3945 {csn 4624 {cpr 4626 × cxp 5670 ⟶wf 6538 ‘cfv 6542 (class class class)co 7414 ↑_m cmap 8838 Fincfn 8957 ℂcc 11130 ℝcr 11131 0cc0 11132 1c1 11133 ici 11134 · cmul 11137 -cneg 11469 ℕcn 12236 2c2 12291 ℕ₀cn0 12496 (,)cioo 13350 ..^cfzo 13653 ↑cexp 14052 ♯chash 14315 Σcsu 15658 ∏cprod 15875 expce 16031 πcpi 16036 ∫citg 25540 𝟭cind 33623 reprcrepr 34234 vtscvts 34261

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7734 ax-inf2 9658 ax-cc 10452 ax-cnex 11188 ax-resscn 11189 ax-1cn 11190 ax-icn 11191 ax-addcl 11192 ax-addrcl 11193 ax-mulcl 11194 ax-mulrcl 11195 ax-mulcom 11196 ax-addass 11197 ax-mulass 11198 ax-distr 11199 ax-i2m1 11200 ax-1ne0 11201 ax-1rid 11202 ax-rnegex 11203 ax-rrecex 11204 ax-cnre 11205 ax-pre-lttri 11206 ax-pre-lttrn 11207 ax-pre-ltadd 11208 ax-pre-mulgt0 11209 ax-pre-sup 11210 ax-addf 11211

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3472 df-sbc 3776 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3964 df-symdif 4238 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-iin 4994 df-disj 5108 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-se 5628 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-isom 6551 df-riota 7370 df-ov 7417 df-oprab 7418 df-mpo 7419 df-of 7679 df-ofr 7680 df-om 7865 df-1st 7987 df-2nd 7988 df-supp 8160 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-oadd 8484 df-omul 8485 df-er 8718 df-map 8840 df-pm 8841 df-ixp 8910 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-fsupp 9380 df-fi 9428 df-sup 9459 df-inf 9460 df-oi 9527 df-dju 9918 df-card 9956 df-acn 9959 df-pnf 11274 df-mnf 11275 df-xr 11276 df-ltxr 11277 df-le 11278 df-sub 11470 df-neg 11471 df-div 11896 df-nn 12237 df-2 12299 df-3 12300 df-4 12301 df-5 12302 df-6 12303 df-7 12304 df-8 12305 df-9 12306 df-n0 12497 df-z 12583 df-dec 12702 df-uz 12847 df-q 12957 df-rp 13001 df-xneg 13118 df-xadd 13119 df-xmul 13120 df-ioo 13354 df-ioc 13355 df-ico 13356 df-icc 13357 df-fz 13511 df-fzo 13654 df-fl 13783 df-mod 13861 df-seq 13993 df-exp 14053 df-fac 14259 df-bc 14288 df-hash 14316 df-shft 15040 df-cj 15072 df-re 15073 df-im 15074 df-sqrt 15208 df-abs 15209 df-limsup 15441 df-clim 15458 df-rlim 15459 df-sum 15659 df-prod 15876 df-ef 16037 df-sin 16039 df-cos 16040 df-pi 16042 df-struct 17109 df-sets 17126 df-slot 17144 df-ndx 17156 df-base 17174 df-ress 17203 df-plusg 17239 df-mulr 17240 df-starv 17241 df-sca 17242 df-vsca 17243 df-ip 17244 df-tset 17245 df-ple 17246 df-ds 17248 df-unif 17249 df-hom 17250 df-cco 17251 df-rest 17397 df-topn 17398 df-0g 17416 df-gsum 17417 df-topgen 17418 df-pt 17419 df-prds 17422 df-xrs 17477 df-qtop 17482 df-imas 17483 df-xps 17485 df-mre 17559 df-mrc 17560 df-acs 17562 df-mgm 18593 df-sgrp 18672 df-mnd 18688 df-submnd 18734 df-mulg 19017 df-cntz 19261 df-cmn 19730 df-psmet 21264 df-xmet 21265 df-met 21266 df-bl 21267 df-mopn 21268 df-fbas 21269 df-fg 21270 df-cnfld 21273 df-top 22789 df-topon 22806 df-topsp 22828 df-bases 22842 df-cld 22916 df-ntr 22917 df-cls 22918 df-nei 22995 df-lp 23033 df-perf 23034 df-cn 23124 df-cnp 23125 df-haus 23212 df-cmp 23284 df-tx 23459 df-hmeo 23652 df-fil 23743 df-fm 23835 df-flim 23836 df-flf 23837 df-xms 24219 df-ms 24220 df-tms 24221 df-cncf 24791 df-ovol 25386 df-vol 25387 df-mbf 25541 df-itg1 25542 df-itg2 25543 df-ibl 25544 df-itg 25545 df-0p 25592 df-limc 25788 df-dv 25789 df-ind 33624 df-repr 34235 df-vts 34262

This theorem is referenced by: (None)

W3C validator

	
		OSZAR »