fourierdlem24 - Mathbox for Glauco Siliprandi

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Theorem fourierdlem24 45332

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 12567	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 ∈ ℤ)
2		pire 26310	. . . . . . . . . 10 ⊢ π ∈ ℝ
3	2	renegcli 11518	. . . . . . . . 9 ⊢ -π ∈ ℝ
4		iccssre 13403	. . . . . . . . 9 ⊢ ((-π ∈ ℝ ∧ π ∈ ℝ) → (-π[,]π) ⊆ ℝ)
5	3, 2, 4	mp2an 689	. . . . . . . 8 ⊢ (-π[,]π) ⊆ ℝ
6		eldifi 4118	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ (-π[,]π))
7	5, 6	sselid 3972	. . . . . . 7 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ ℝ)
8	7	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 𝐴 ∈ ℝ)
9		2re 12283	. . . . . . . 8 ⊢ 2 ∈ ℝ
10	9, 2	remulcli 11227	. . . . . . 7 ⊢ (2 · π) ∈ ℝ
11	10	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (2 · π) ∈ ℝ)
12		simpr 484	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < 𝐴)
13		2pos 12312	. . . . . . . 8 ⊢ 0 < 2
14		pipos 26312	. . . . . . . 8 ⊢ 0 < π
15	9, 2, 13, 14	mulgt0ii 11344	. . . . . . 7 ⊢ 0 < (2 · π)
16	15	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (2 · π))
17	8, 11, 12, 16	divgt0d 12146	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (𝐴 / (2 · π)))
18	11, 16	elrpd 13010	. . . . . . . 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 11269	. . . . . . . . . . . 12 ⊢ -π ∈ ℝ^*
22	21	a1i 11	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -π ∈ ℝ^*)
23	19	rexrd 11261	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → π ∈ ℝ^*)
24		iccleub 13376	. . . . . . . . . . 11 ⊢ ((-π ∈ ℝ^* ∧ π ∈ ℝ^* ∧ 𝐴 ∈ (-π[,]π)) → 𝐴 ≤ π)
25	22, 23, 6, 24	syl3anc 1368	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ≤ π)
26		pirp 26313	. . . . . . . . . . 11 ⊢ π ∈ ℝ⁺
27		2timesgt 44483	. . . . . . . . . . 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 11369	. . . . . . . . 9 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 < (2 · π))
30	29	adantr 480	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 𝐴 < (2 · π))
31	8, 11, 18, 30	ltdiv1dd 13070	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
32	10	recni 11225	. . . . . . . 8 ⊢ (2 · π) ∈ ℂ
33	10, 15	gt0ne0ii 11747	. . . . . . . 8 ⊢ (2 · π) ≠ 0
34	32, 33	dividi 11944	. . . . . . 7 ⊢ ((2 · π) / (2 · π)) = 1
35	31, 34	breqtrdi 5179	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < 1)
36		0p1e1 12331	. . . . . 6 ⊢ (0 + 1) = 1
37	35, 36	breqtrrdi 5180	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < (0 + 1))
38		btwnnz 12635	. . . . 5 ⊢ ((0 ∈ ℤ ∧ 0 < (𝐴 / (2 · π)) ∧ (𝐴 / (2 · π)) < (0 + 1)) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
39	1, 17, 37, 38	syl3anc 1368	. . . 4 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
40		simpl 482	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ∈ ((-π[,]π) ∖ {0}))
41	7	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ∈ ℝ)
42		0red 11214	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 0 ∈ ℝ)
43		simpr 484	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → ¬ 0 < 𝐴)
44	41, 42, 43	nltled 11361	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ≤ 0)
45		eldifsni 4785	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ≠ 0)
46	45	necomd 2988	. . . . . . 7 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 0 ≠ 𝐴)
47	46	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 0 ≠ 𝐴)
48	41, 42, 44, 47	leneltd 11365	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 < 0)
49		neg1z 12595	. . . . . . 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 12039	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (𝐴 / (2 · π)) ∈ ℝ)
53	52	adantr 480	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) ∈ ℝ)
54		1red 11212	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 1 ∈ ℝ)
55	7	recnd 11239	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ ℂ)
56	55	adantr 480	. . . . . . . . 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 12000	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) = (-𝐴 / (2 · π)))
60	7	renegcld 11638	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 ∈ ℝ)
61	60	adantr 480	. . . . . . . . . 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 12976	. . . . . . . . . . . 12 ⊢ 2 ∈ ℝ⁺
64		rpmulcl 12994	. . . . . . . . . . . 12 ⊢ ((2 ∈ ℝ⁺ ∧ π ∈ ℝ⁺) → (2 · π) ∈ ℝ⁺)
65	63, 26, 64	mp2an 689	. . . . . . . . . . 11 ⊢ (2 · π) ∈ ℝ⁺
66	65	a1i 11	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (2 · π) ∈ ℝ⁺)
67		iccgelb 13377	. . . . . . . . . . . . . 14 ⊢ ((-π ∈ ℝ^* ∧ π ∈ ℝ^* ∧ 𝐴 ∈ (-π[,]π)) → -π ≤ 𝐴)
68	22, 23, 6, 67	syl3anc 1368	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -π ≤ 𝐴)
69	19, 7, 68	lenegcon1d 11793	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 ≤ π)
70	60, 19, 20, 69, 28	lelttrd 11369	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 < (2 · π))
71	70	adantr 480	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -𝐴 < (2 · π))
72	61, 62, 66, 71	ltdiv1dd 13070	. . . . . . . . 9 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
73	72, 34	breqtrdi 5179	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < 1)
74	59, 73	eqbrtrd 5160	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) < 1)
75	53, 54, 74	ltnegcon1d 11791	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -1 < (𝐴 / (2 · π)))
76	7	adantr 480	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 𝐴 ∈ ℝ)
77		simpr 484	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 𝐴 < 0)
78	76, 66, 77	divlt0gt0d 44481	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < 0)
79		neg1cn 12323	. . . . . . . . 9 ⊢ -1 ∈ ℂ
80		ax-1cn 11164	. . . . . . . . 9 ⊢ 1 ∈ ℂ
81	79, 80	addcomi 11402	. . . . . . . 8 ⊢ (-1 + 1) = (1 + -1)
82		1pneg1e0 12328	. . . . . . . 8 ⊢ (1 + -1) = 0
83	81, 82	eqtr2i 2753	. . . . . . 7 ⊢ 0 = (-1 + 1)
84	78, 83	breqtrdi 5179	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < (-1 + 1))
85		btwnnz 12635	. . . . . 6 ⊢ ((-1 ∈ ℤ ∧ -1 < (𝐴 / (2 · π)) ∧ (𝐴 / (2 · π)) < (-1 + 1)) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
86	50, 75, 84, 85	syl3anc 1368	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
87	40, 48, 86	syl2anc 583	. . . 4 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
88	39, 87	pm2.61dan 810	. . 3 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
89	65	a1i 11	. . . 4 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (2 · π) ∈ ℝ⁺)
90		mod0 13838	. . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (2 · π) ∈ ℝ⁺) → ((𝐴 mod (2 · π)) = 0 ↔ (𝐴 / (2 · π)) ∈ ℤ))
91	7, 89, 90	syl2anc 583	. . 3 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → ((𝐴 mod (2 · π)) = 0 ↔ (𝐴 / (2 · π)) ∈ ℤ))
92	88, 91	mtbird 325	. 2 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → ¬ (𝐴 mod (2 · π)) = 0)
93	92	neqned 2939	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 395 = wceq 1533 ∈ wcel 2098 ≠ wne 2932 ∖ cdif 3937 ⊆ wss 3940 {csn 4620 class class class wbr 5138 (class class class)co 7401 ℂcc 11104 ℝcr 11105 0cc0 11106 1c1 11107 + caddc 11109 · cmul 11111 ℝ^*cxr 11244 < clt 11245 ≤ cle 11246 -cneg 11442 / cdiv 11868 2c2 12264 ℤcz 12555 ℝ⁺crp 12971 [,]cicc 13324 mod cmo 13831 πcpi 16007

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 2695 ax-rep 5275 ax-sep 5289 ax-nul 5296 ax-pow 5353 ax-pr 5417 ax-un 7718 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

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 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-nel 3039 df-ral 3054 df-rex 3063 df-rmo 3368 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3770 df-csb 3886 df-dif 3943 df-un 3945 df-in 3947 df-ss 3957 df-pss 3959 df-nul 4315 df-if 4521 df-pw 4596 df-sn 4621 df-pr 4623 df-tp 4625 df-op 4627 df-uni 4900 df-int 4941 df-iun 4989 df-iin 4990 df-br 5139 df-opab 5201 df-mpt 5222 df-tr 5256 df-id 5564 df-eprel 5570 df-po 5578 df-so 5579 df-fr 5621 df-se 5622 df-we 5623 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6290 df-ord 6357 df-on 6358 df-lim 6359 df-suc 6360 df-iota 6485 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-isom 6542 df-riota 7357 df-ov 7404 df-oprab 7405 df-mpo 7406 df-of 7663 df-om 7849 df-1st 7968 df-2nd 7969 df-supp 8141 df-frecs 8261 df-wrecs 8292 df-recs 8366 df-rdg 8405 df-1o 8461 df-2o 8462 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 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-div 11869 df-nn 12210 df-2 12272 df-3 12273 df-4 12274 df-5 12275 df-6 12276 df-7 12277 df-8 12278 df-9 12279 df-n0 12470 df-z 12556 df-dec 12675 df-uz 12820 df-q 12930 df-rp 12972 df-xneg 13089 df-xadd 13090 df-xmul 13091 df-ioo 13325 df-ioc 13326 df-ico 13327 df-icc 13328 df-fz 13482 df-fzo 13625 df-fl 13754 df-mod 13832 df-seq 13964 df-exp 14025 df-fac 14231 df-bc 14260 df-hash 14288 df-shft 15011 df-cj 15043 df-re 15044 df-im 15045 df-sqrt 15179 df-abs 15180 df-limsup 15412 df-clim 15429 df-rlim 15430 df-sum 15630 df-ef 16008 df-sin 16010 df-cos 16011 df-pi 16013 df-struct 17079 df-sets 17096 df-slot 17114 df-ndx 17126 df-base 17144 df-ress 17173 df-plusg 17209 df-mulr 17210 df-starv 17211 df-sca 17212 df-vsca 17213 df-ip 17214 df-tset 17215 df-ple 17216 df-ds 17218 df-unif 17219 df-hom 17220 df-cco 17221 df-rest 17367 df-topn 17368 df-0g 17386 df-gsum 17387 df-topgen 17388 df-pt 17389 df-prds 17392 df-xrs 17447 df-qtop 17452 df-imas 17453 df-xps 17455 df-mre 17529 df-mrc 17530 df-acs 17532 df-mgm 18563 df-sgrp 18642 df-mnd 18658 df-submnd 18704 df-mulg 18986 df-cntz 19223 df-cmn 19692 df-psmet 21220 df-xmet 21221 df-met 21222 df-bl 21223 df-mopn 21224 df-fbas 21225 df-fg 21226 df-cnfld 21229 df-top 22718 df-topon 22735 df-topsp 22757 df-bases 22771 df-cld 22845 df-ntr 22846 df-cls 22847 df-nei 22924 df-lp 22962 df-perf 22963 df-cn 23053 df-cnp 23054 df-haus 23141 df-tx 23388 df-hmeo 23581 df-fil 23672 df-fm 23764 df-flim 23765 df-flf 23766 df-xms 24148 df-ms 24149 df-tms 24150 df-cncf 24720 df-limc 25717 df-dv 25718

This theorem is referenced by: fourierdlem66 45373

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