fourierdlem24 - Mathbox for Glauco Siliprandi

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Theorem fourierdlem24 45578

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 12595	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 ∈ ℤ)
2		pire 26406	. . . . . . . . . 10 ⊢ π ∈ ℝ
3	2	renegcli 11546	. . . . . . . . 9 ⊢ -π ∈ ℝ
4		iccssre 13433	. . . . . . . . 9 ⊢ ((-π ∈ ℝ ∧ π ∈ ℝ) → (-π[,]π) ⊆ ℝ)
5	3, 2, 4	mp2an 690	. . . . . . . 8 ⊢ (-π[,]π) ⊆ ℝ
6		eldifi 4120	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ (-π[,]π))
7	5, 6	sselid 3971	. . . . . . 7 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ ℝ)
8	7	adantr 479	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 𝐴 ∈ ℝ)
9		2re 12311	. . . . . . . 8 ⊢ 2 ∈ ℝ
10	9, 2	remulcli 11255	. . . . . . 7 ⊢ (2 · π) ∈ ℝ
11	10	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (2 · π) ∈ ℝ)
12		simpr 483	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < 𝐴)
13		2pos 12340	. . . . . . . 8 ⊢ 0 < 2
14		pipos 26408	. . . . . . . 8 ⊢ 0 < π
15	9, 2, 13, 14	mulgt0ii 11372	. . . . . . 7 ⊢ 0 < (2 · π)
16	15	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (2 · π))
17	8, 11, 12, 16	divgt0d 12174	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (𝐴 / (2 · π)))
18	11, 16	elrpd 13040	. . . . . . . 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 11297	. . . . . . . . . . . 12 ⊢ -π ∈ ℝ^*
22	21	a1i 11	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -π ∈ ℝ^*)
23	19	rexrd 11289	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → π ∈ ℝ^*)
24		iccleub 13406	. . . . . . . . . . 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 26409	. . . . . . . . . . 11 ⊢ π ∈ ℝ⁺
27		2timesgt 44729	. . . . . . . . . . 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 11397	. . . . . . . . 9 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 < (2 · π))
30	29	adantr 479	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 𝐴 < (2 · π))
31	8, 11, 18, 30	ltdiv1dd 13100	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
32	10	recni 11253	. . . . . . . 8 ⊢ (2 · π) ∈ ℂ
33	10, 15	gt0ne0ii 11775	. . . . . . . 8 ⊢ (2 · π) ≠ 0
34	32, 33	dividi 11972	. . . . . . 7 ⊢ ((2 · π) / (2 · π)) = 1
35	31, 34	breqtrdi 5185	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < 1)
36		0p1e1 12359	. . . . . 6 ⊢ (0 + 1) = 1
37	35, 36	breqtrrdi 5186	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < (0 + 1))
38		btwnnz 12663	. . . . 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 481	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ∈ ((-π[,]π) ∖ {0}))
41	7	adantr 479	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ∈ ℝ)
42		0red 11242	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 0 ∈ ℝ)
43		simpr 483	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → ¬ 0 < 𝐴)
44	41, 42, 43	nltled 11389	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ≤ 0)
45		eldifsni 4790	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ≠ 0)
46	45	necomd 2986	. . . . . . 7 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 0 ≠ 𝐴)
47	46	adantr 479	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 0 ≠ 𝐴)
48	41, 42, 44, 47	leneltd 11393	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 < 0)
49		neg1z 12623	. . . . . . 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 12067	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (𝐴 / (2 · π)) ∈ ℝ)
53	52	adantr 479	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) ∈ ℝ)
54		1red 11240	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 1 ∈ ℝ)
55	7	recnd 11267	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ ℂ)
56	55	adantr 479	. . . . . . . . 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 12028	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) = (-𝐴 / (2 · π)))
60	7	renegcld 11666	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 ∈ ℝ)
61	60	adantr 479	. . . . . . . . . 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 13006	. . . . . . . . . . . 12 ⊢ 2 ∈ ℝ⁺
64		rpmulcl 13024	. . . . . . . . . . . 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 13407	. . . . . . . . . . . . . 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 11821	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 ≤ π)
70	60, 19, 20, 69, 28	lelttrd 11397	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 < (2 · π))
71	70	adantr 479	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -𝐴 < (2 · π))
72	61, 62, 66, 71	ltdiv1dd 13100	. . . . . . . . 9 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
73	72, 34	breqtrdi 5185	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < 1)
74	59, 73	eqbrtrd 5166	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) < 1)
75	53, 54, 74	ltnegcon1d 11819	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -1 < (𝐴 / (2 · π)))
76	7	adantr 479	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 𝐴 ∈ ℝ)
77		simpr 483	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 𝐴 < 0)
78	76, 66, 77	divlt0gt0d 44727	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < 0)
79		neg1cn 12351	. . . . . . . . 9 ⊢ -1 ∈ ℂ
80		ax-1cn 11191	. . . . . . . . 9 ⊢ 1 ∈ ℂ
81	79, 80	addcomi 11430	. . . . . . . 8 ⊢ (-1 + 1) = (1 + -1)
82		1pneg1e0 12356	. . . . . . . 8 ⊢ (1 + -1) = 0
83	81, 82	eqtr2i 2754	. . . . . . 7 ⊢ 0 = (-1 + 1)
84	78, 83	breqtrdi 5185	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < (-1 + 1))
85		btwnnz 12663	. . . . . 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 582	. . . 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 13868	. . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (2 · π) ∈ ℝ⁺) → ((𝐴 mod (2 · π)) = 0 ↔ (𝐴 / (2 · π)) ∈ ℤ))
91	7, 89, 90	syl2anc 582	. . 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 2937	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 394 = wceq 1533 ∈ wcel 2098 ≠ wne 2930 ∖ cdif 3938 ⊆ wss 3941 {csn 4625 class class class wbr 5144 (class class class)co 7413 ℂcc 11131 ℝcr 11132 0cc0 11133 1c1 11134 + caddc 11136 · cmul 11138 ℝ^*cxr 11272 < clt 11273 ≤ cle 11274 -cneg 11470 / cdiv 11896 2c2 12292 ℤcz 12583 ℝ⁺crp 13001 [,]cicc 13354 mod cmo 13861 πcpi 16037

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 2696 ax-rep 5281 ax-sep 5295 ax-nul 5302 ax-pow 5360 ax-pr 5424 ax-un 7735 ax-inf2 9659 ax-cnex 11189 ax-resscn 11190 ax-1cn 11191 ax-icn 11192 ax-addcl 11193 ax-addrcl 11194 ax-mulcl 11195 ax-mulrcl 11196 ax-mulcom 11197 ax-addass 11198 ax-mulass 11199 ax-distr 11200 ax-i2m1 11201 ax-1ne0 11202 ax-1rid 11203 ax-rnegex 11204 ax-rrecex 11205 ax-cnre 11206 ax-pre-lttri 11207 ax-pre-lttrn 11208 ax-pre-ltadd 11209 ax-pre-mulgt0 11210 ax-pre-sup 11211 ax-addf 11212

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 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3771 df-csb 3887 df-dif 3944 df-un 3946 df-in 3948 df-ss 3958 df-pss 3961 df-nul 4320 df-if 4526 df-pw 4601 df-sn 4626 df-pr 4628 df-tp 4630 df-op 4632 df-uni 4905 df-int 4946 df-iun 4994 df-iin 4995 df-br 5145 df-opab 5207 df-mpt 5228 df-tr 5262 df-id 5571 df-eprel 5577 df-po 5585 df-so 5586 df-fr 5628 df-se 5629 df-we 5630 df-xp 5679 df-rel 5680 df-cnv 5681 df-co 5682 df-dm 5683 df-rn 5684 df-res 5685 df-ima 5686 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7369 df-ov 7416 df-oprab 7417 df-mpo 7418 df-of 7679 df-om 7866 df-1st 7987 df-2nd 7988 df-supp 8159 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 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 9381 df-fi 9429 df-sup 9460 df-inf 9461 df-oi 9528 df-card 9957 df-pnf 11275 df-mnf 11276 df-xr 11277 df-ltxr 11278 df-le 11279 df-sub 11471 df-neg 11472 df-div 11897 df-nn 12238 df-2 12300 df-3 12301 df-4 12302 df-5 12303 df-6 12304 df-7 12305 df-8 12306 df-9 12307 df-n0 12498 df-z 12584 df-dec 12703 df-uz 12848 df-q 12958 df-rp 13002 df-xneg 13119 df-xadd 13120 df-xmul 13121 df-ioo 13355 df-ioc 13356 df-ico 13357 df-icc 13358 df-fz 13512 df-fzo 13655 df-fl 13784 df-mod 13862 df-seq 13994 df-exp 14054 df-fac 14260 df-bc 14289 df-hash 14317 df-shft 15041 df-cj 15073 df-re 15074 df-im 15075 df-sqrt 15209 df-abs 15210 df-limsup 15442 df-clim 15459 df-rlim 15460 df-sum 15660 df-ef 16038 df-sin 16040 df-cos 16041 df-pi 16043 df-struct 17110 df-sets 17127 df-slot 17145 df-ndx 17157 df-base 17175 df-ress 17204 df-plusg 17240 df-mulr 17241 df-starv 17242 df-sca 17243 df-vsca 17244 df-ip 17245 df-tset 17246 df-ple 17247 df-ds 17249 df-unif 17250 df-hom 17251 df-cco 17252 df-rest 17398 df-topn 17399 df-0g 17417 df-gsum 17418 df-topgen 17419 df-pt 17420 df-prds 17423 df-xrs 17478 df-qtop 17483 df-imas 17484 df-xps 17486 df-mre 17560 df-mrc 17561 df-acs 17563 df-mgm 18594 df-sgrp 18673 df-mnd 18689 df-submnd 18735 df-mulg 19023 df-cntz 19267 df-cmn 19736 df-psmet 21270 df-xmet 21271 df-met 21272 df-bl 21273 df-mopn 21274 df-fbas 21275 df-fg 21276 df-cnfld 21279 df-top 22809 df-topon 22826 df-topsp 22848 df-bases 22862 df-cld 22936 df-ntr 22937 df-cls 22938 df-nei 23015 df-lp 23053 df-perf 23054 df-cn 23144 df-cnp 23145 df-haus 23232 df-tx 23479 df-hmeo 23672 df-fil 23763 df-fm 23855 df-flim 23856 df-flf 23857 df-xms 24239 df-ms 24240 df-tms 24241 df-cncf 24811 df-limc 25808 df-dv 25809

This theorem is referenced by: fourierdlem66 45619

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