fourierdlem24 - Mathbox for Glauco Siliprandi

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Theorem fourierdlem24 44833

Description: A sufficient condition for module being nonzero. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

**Assertion**
Ref	Expression
fourierdlem24	⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (𝐴 mod (2 · π)) ≠ 0)

**Proof of Theorem fourierdlem24**
Step	Hyp	Ref	Expression
1		0zd 12566	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 ∈ ℤ)
2		pire 25959	. . . . . . . . . 10 ⊢ π ∈ ℝ
3	2	renegcli 11517	. . . . . . . . 9 ⊢ -π ∈ ℝ
4		iccssre 13402	. . . . . . . . 9 ⊢ ((-π ∈ ℝ ∧ π ∈ ℝ) → (-π[,]π) ⊆ ℝ)
5	3, 2, 4	mp2an 690	. . . . . . . 8 ⊢ (-π[,]π) ⊆ ℝ
6		eldifi 4125	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ (-π[,]π))
7	5, 6	sselid 3979	. . . . . . 7 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ ℝ)
8	7	adantr 481	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 𝐴 ∈ ℝ)
9		2re 12282	. . . . . . . 8 ⊢ 2 ∈ ℝ
10	9, 2	remulcli 11226	. . . . . . 7 ⊢ (2 · π) ∈ ℝ
11	10	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (2 · π) ∈ ℝ)
12		simpr 485	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < 𝐴)
13		2pos 12311	. . . . . . . 8 ⊢ 0 < 2
14		pipos 25961	. . . . . . . 8 ⊢ 0 < π
15	9, 2, 13, 14	mulgt0ii 11343	. . . . . . 7 ⊢ 0 < (2 · π)
16	15	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (2 · π))
17	8, 11, 12, 16	divgt0d 12145	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (𝐴 / (2 · π)))
18	11, 16	elrpd 13009	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (2 · π) ∈ ℝ⁺)
19	2	a1i 11	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → π ∈ ℝ)
20	10	a1i 11	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (2 · π) ∈ ℝ)
21	3	rexri 11268	. . . . . . . . . . . 12 ⊢ -π ∈ ℝ^*
22	21	a1i 11	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -π ∈ ℝ^*)
23	19	rexrd 11260	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → π ∈ ℝ^*)
24		iccleub 13375	. . . . . . . . . . 11 ⊢ ((-π ∈ ℝ^* ∧ π ∈ ℝ^* ∧ 𝐴 ∈ (-π[,]π)) → 𝐴 ≤ π)
25	22, 23, 6, 24	syl3anc 1371	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ≤ π)
26		pirp 25962	. . . . . . . . . . 11 ⊢ π ∈ ℝ⁺
27		2timesgt 43984	. . . . . . . . . . 11 ⊢ (π ∈ ℝ⁺ → π < (2 · π))
28	26, 27	mp1i 13	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → π < (2 · π))
29	7, 19, 20, 25, 28	lelttrd 11368	. . . . . . . . 9 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 < (2 · π))
30	29	adantr 481	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 𝐴 < (2 · π))
31	8, 11, 18, 30	ltdiv1dd 13069	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
32	10	recni 11224	. . . . . . . 8 ⊢ (2 · π) ∈ ℂ
33	10, 15	gt0ne0ii 11746	. . . . . . . 8 ⊢ (2 · π) ≠ 0
34	32, 33	dividi 11943	. . . . . . 7 ⊢ ((2 · π) / (2 · π)) = 1
35	31, 34	breqtrdi 5188	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < 1)
36		0p1e1 12330	. . . . . 6 ⊢ (0 + 1) = 1
37	35, 36	breqtrrdi 5189	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < (0 + 1))
38		btwnnz 12634	. . . . 5 ⊢ ((0 ∈ ℤ ∧ 0 < (𝐴 / (2 · π)) ∧ (𝐴 / (2 · π)) < (0 + 1)) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
39	1, 17, 37, 38	syl3anc 1371	. . . 4 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
40		simpl 483	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ∈ ((-π[,]π) ∖ {0}))
41	7	adantr 481	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ∈ ℝ)
42		0red 11213	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 0 ∈ ℝ)
43		simpr 485	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → ¬ 0 < 𝐴)
44	41, 42, 43	nltled 11360	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ≤ 0)
45		eldifsni 4792	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ≠ 0)
46	45	necomd 2996	. . . . . . 7 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 0 ≠ 𝐴)
47	46	adantr 481	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 0 ≠ 𝐴)
48	41, 42, 44, 47	leneltd 11364	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 < 0)
49		neg1z 12594	. . . . . . 7 ⊢ -1 ∈ ℤ
50	49	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -1 ∈ ℤ)
51	33	a1i 11	. . . . . . . . 9 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (2 · π) ≠ 0)
52	7, 20, 51	redivcld 12038	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (𝐴 / (2 · π)) ∈ ℝ)
53	52	adantr 481	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) ∈ ℝ)
54		1red 11211	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 1 ∈ ℝ)
55	7	recnd 11238	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ ℂ)
56	55	adantr 481	. . . . . . . . 9 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 𝐴 ∈ ℂ)
57	32	a1i 11	. . . . . . . . 9 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (2 · π) ∈ ℂ)
58	33	a1i 11	. . . . . . . . 9 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (2 · π) ≠ 0)
59	56, 57, 58	divnegd 11999	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) = (-𝐴 / (2 · π)))
60	7	renegcld 11637	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 ∈ ℝ)
61	60	adantr 481	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -𝐴 ∈ ℝ)
62	10	a1i 11	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (2 · π) ∈ ℝ)
63		2rp 12975	. . . . . . . . . . . 12 ⊢ 2 ∈ ℝ⁺
64		rpmulcl 12993	. . . . . . . . . . . 12 ⊢ ((2 ∈ ℝ⁺ ∧ π ∈ ℝ⁺) → (2 · π) ∈ ℝ⁺)
65	63, 26, 64	mp2an 690	. . . . . . . . . . 11 ⊢ (2 · π) ∈ ℝ⁺
66	65	a1i 11	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (2 · π) ∈ ℝ⁺)
67		iccgelb 13376	. . . . . . . . . . . . . 14 ⊢ ((-π ∈ ℝ^* ∧ π ∈ ℝ^* ∧ 𝐴 ∈ (-π[,]π)) → -π ≤ 𝐴)
68	22, 23, 6, 67	syl3anc 1371	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -π ≤ 𝐴)
69	19, 7, 68	lenegcon1d 11792	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 ≤ π)
70	60, 19, 20, 69, 28	lelttrd 11368	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 < (2 · π))
71	70	adantr 481	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -𝐴 < (2 · π))
72	61, 62, 66, 71	ltdiv1dd 13069	. . . . . . . . 9 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
73	72, 34	breqtrdi 5188	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < 1)
74	59, 73	eqbrtrd 5169	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) < 1)
75	53, 54, 74	ltnegcon1d 11790	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -1 < (𝐴 / (2 · π)))
76	7	adantr 481	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 𝐴 ∈ ℝ)
77		simpr 485	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 𝐴 < 0)
78	76, 66, 77	divlt0gt0d 43982	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < 0)
79		neg1cn 12322	. . . . . . . . 9 ⊢ -1 ∈ ℂ
80		ax-1cn 11164	. . . . . . . . 9 ⊢ 1 ∈ ℂ
81	79, 80	addcomi 11401	. . . . . . . 8 ⊢ (-1 + 1) = (1 + -1)
82		1pneg1e0 12327	. . . . . . . 8 ⊢ (1 + -1) = 0
83	81, 82	eqtr2i 2761	. . . . . . 7 ⊢ 0 = (-1 + 1)
84	78, 83	breqtrdi 5188	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < (-1 + 1))
85		btwnnz 12634	. . . . . 6 ⊢ ((-1 ∈ ℤ ∧ -1 < (𝐴 / (2 · π)) ∧ (𝐴 / (2 · π)) < (-1 + 1)) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
86	50, 75, 84, 85	syl3anc 1371	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
87	40, 48, 86	syl2anc 584	. . . 4 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
88	39, 87	pm2.61dan 811	. . 3 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
89	65	a1i 11	. . . 4 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (2 · π) ∈ ℝ⁺)
90		mod0 13837	. . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (2 · π) ∈ ℝ⁺) → ((𝐴 mod (2 · π)) = 0 ↔ (𝐴 / (2 · π)) ∈ ℤ))
91	7, 89, 90	syl2anc 584	. . 3 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → ((𝐴 mod (2 · π)) = 0 ↔ (𝐴 / (2 · π)) ∈ ℤ))
92	88, 91	mtbird 324	. 2 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → ¬ (𝐴 mod (2 · π)) = 0)
93	92	neqned 2947	1 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (𝐴 mod (2 · π)) ≠ 0)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∖ cdif 3944 ⊆ wss 3947 {csn 4627 class class class wbr 5147 (class class class)co 7405 ℂcc 11104 ℝcr 11105 0cc0 11106 1c1 11107 + caddc 11109 · cmul 11111 ℝ^*cxr 11243 < clt 11244 ≤ cle 11245 -cneg 11441 / cdiv 11867 2c2 12263 ℤcz 12554 ℝ⁺crp 12970 [,]cicc 13323 mod cmo 13830 πcpi 16006

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 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 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-inf2 9632 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-pre-sup 11184 ax-addf 11185 ax-mulf 11186

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-tp 4632 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-iin 4999 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-se 5631 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7666 df-om 7852 df-1st 7971 df-2nd 7972 df-supp 8143 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-2o 8463 df-er 8699 df-map 8818 df-pm 8819 df-ixp 8888 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-fsupp 9358 df-fi 9402 df-sup 9433 df-inf 9434 df-oi 9501 df-card 9930 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-div 11868 df-nn 12209 df-2 12271 df-3 12272 df-4 12273 df-5 12274 df-6 12275 df-7 12276 df-8 12277 df-9 12278 df-n0 12469 df-z 12555 df-dec 12674 df-uz 12819 df-q 12929 df-rp 12971 df-xneg 13088 df-xadd 13089 df-xmul 13090 df-ioo 13324 df-ioc 13325 df-ico 13326 df-icc 13327 df-fz 13481 df-fzo 13624 df-fl 13753 df-mod 13831 df-seq 13963 df-exp 14024 df-fac 14230 df-bc 14259 df-hash 14287 df-shft 15010 df-cj 15042 df-re 15043 df-im 15044 df-sqrt 15178 df-abs 15179 df-limsup 15411 df-clim 15428 df-rlim 15429 df-sum 15629 df-ef 16007 df-sin 16009 df-cos 16010 df-pi 16012 df-struct 17076 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17141 df-ress 17170 df-plusg 17206 df-mulr 17207 df-starv 17208 df-sca 17209 df-vsca 17210 df-ip 17211 df-tset 17212 df-ple 17213 df-ds 17215 df-unif 17216 df-hom 17217 df-cco 17218 df-rest 17364 df-topn 17365 df-0g 17383 df-gsum 17384 df-topgen 17385 df-pt 17386 df-prds 17389 df-xrs 17444 df-qtop 17449 df-imas 17450 df-xps 17452 df-mre 17526 df-mrc 17527 df-acs 17529 df-mgm 18557 df-sgrp 18606 df-mnd 18622 df-submnd 18668 df-mulg 18945 df-cntz 19175 df-cmn 19644 df-psmet 20928 df-xmet 20929 df-met 20930 df-bl 20931 df-mopn 20932 df-fbas 20933 df-fg 20934 df-cnfld 20937 df-top 22387 df-topon 22404 df-topsp 22426 df-bases 22440 df-cld 22514 df-ntr 22515 df-cls 22516 df-nei 22593 df-lp 22631 df-perf 22632 df-cn 22722 df-cnp 22723 df-haus 22810 df-tx 23057 df-hmeo 23250 df-fil 23341 df-fm 23433 df-flim 23434 df-flf 23435 df-xms 23817 df-ms 23818 df-tms 23819 df-cncf 24385 df-limc 25374 df-dv 25375

This theorem is referenced by: fourierdlem66 44874

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