fourierdlem24 - Mathbox for Glauco Siliprandi

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Theorem fourierdlem24 45442

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 12592	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 ∈ ℤ)
2		pire 26380	. . . . . . . . . 10 ⊢ π ∈ ℝ
3	2	renegcli 11543	. . . . . . . . 9 ⊢ -π ∈ ℝ
4		iccssre 13430	. . . . . . . . 9 ⊢ ((-π ∈ ℝ ∧ π ∈ ℝ) → (-π[,]π) ⊆ ℝ)
5	3, 2, 4	mp2an 691	. . . . . . . 8 ⊢ (-π[,]π) ⊆ ℝ
6		eldifi 4122	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ (-π[,]π))
7	5, 6	sselid 3976	. . . . . . 7 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ∈ ℝ)
8	7	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 𝐴 ∈ ℝ)
9		2re 12308	. . . . . . . 8 ⊢ 2 ∈ ℝ
10	9, 2	remulcli 11252	. . . . . . 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 12337	. . . . . . . 8 ⊢ 0 < 2
14		pipos 26382	. . . . . . . 8 ⊢ 0 < π
15	9, 2, 13, 14	mulgt0ii 11369	. . . . . . 7 ⊢ 0 < (2 · π)
16	15	a1i 11	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (2 · π))
17	8, 11, 12, 16	divgt0d 12171	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → 0 < (𝐴 / (2 · π)))
18	11, 16	elrpd 13037	. . . . . . . 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 11294	. . . . . . . . . . . 12 ⊢ -π ∈ ℝ^*
22	21	a1i 11	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -π ∈ ℝ^*)
23	19	rexrd 11286	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → π ∈ ℝ^*)
24		iccleub 13403	. . . . . . . . . . 11 ⊢ ((-π ∈ ℝ^* ∧ π ∈ ℝ^* ∧ 𝐴 ∈ (-π[,]π)) → 𝐴 ≤ π)
25	22, 23, 6, 24	syl3anc 1369	. . . . . . . . . 10 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ≤ π)
26		pirp 26383	. . . . . . . . . . 11 ⊢ π ∈ ℝ⁺
27		2timesgt 44593	. . . . . . . . . . 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 11394	. . . . . . . . 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 13097	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
32	10	recni 11250	. . . . . . . 8 ⊢ (2 · π) ∈ ℂ
33	10, 15	gt0ne0ii 11772	. . . . . . . 8 ⊢ (2 · π) ≠ 0
34	32, 33	dividi 11969	. . . . . . 7 ⊢ ((2 · π) / (2 · π)) = 1
35	31, 34	breqtrdi 5183	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < 1)
36		0p1e1 12356	. . . . . 6 ⊢ (0 + 1) = 1
37	35, 36	breqtrrdi 5184	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 0 < 𝐴) → (𝐴 / (2 · π)) < (0 + 1))
38		btwnnz 12660	. . . . 5 ⊢ ((0 ∈ ℤ ∧ 0 < (𝐴 / (2 · π)) ∧ (𝐴 / (2 · π)) < (0 + 1)) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
39	1, 17, 37, 38	syl3anc 1369	. . . 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 11239	. . . . . 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 11386	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 ≤ 0)
45		eldifsni 4789	. . . . . . . 8 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → 𝐴 ≠ 0)
46	45	necomd 2991	. . . . . . 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 11390	. . . . 5 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ ¬ 0 < 𝐴) → 𝐴 < 0)
49		neg1z 12620	. . . . . . 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 12064	. . . . . . . 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 11237	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → 1 ∈ ℝ)
55	7	recnd 11264	. . . . . . . . . 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 12025	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) = (-𝐴 / (2 · π)))
60	7	renegcld 11663	. . . . . . . . . . 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 13003	. . . . . . . . . . . 12 ⊢ 2 ∈ ℝ⁺
64		rpmulcl 13021	. . . . . . . . . . . 12 ⊢ ((2 ∈ ℝ⁺ ∧ π ∈ ℝ⁺) → (2 · π) ∈ ℝ⁺)
65	63, 26, 64	mp2an 691	. . . . . . . . . . 11 ⊢ (2 · π) ∈ ℝ⁺
66	65	a1i 11	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (2 · π) ∈ ℝ⁺)
67		iccgelb 13404	. . . . . . . . . . . . . 14 ⊢ ((-π ∈ ℝ^* ∧ π ∈ ℝ^* ∧ 𝐴 ∈ (-π[,]π)) → -π ≤ 𝐴)
68	22, 23, 6, 67	syl3anc 1369	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -π ≤ 𝐴)
69	19, 7, 68	lenegcon1d 11818	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → -𝐴 ≤ π)
70	60, 19, 20, 69, 28	lelttrd 11394	. . . . . . . . . . 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 13097	. . . . . . . . 9 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < ((2 · π) / (2 · π)))
73	72, 34	breqtrdi 5183	. . . . . . . 8 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (-𝐴 / (2 · π)) < 1)
74	59, 73	eqbrtrd 5164	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → -(𝐴 / (2 · π)) < 1)
75	53, 54, 74	ltnegcon1d 11816	. . . . . 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 44591	. . . . . . 7 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < 0)
79		neg1cn 12348	. . . . . . . . 9 ⊢ -1 ∈ ℂ
80		ax-1cn 11188	. . . . . . . . 9 ⊢ 1 ∈ ℂ
81	79, 80	addcomi 11427	. . . . . . . 8 ⊢ (-1 + 1) = (1 + -1)
82		1pneg1e0 12353	. . . . . . . 8 ⊢ (1 + -1) = 0
83	81, 82	eqtr2i 2756	. . . . . . 7 ⊢ 0 = (-1 + 1)
84	78, 83	breqtrdi 5183	. . . . . 6 ⊢ ((𝐴 ∈ ((-π[,]π) ∖ {0}) ∧ 𝐴 < 0) → (𝐴 / (2 · π)) < (-1 + 1))
85		btwnnz 12660	. . . . . 6 ⊢ ((-1 ∈ ℤ ∧ -1 < (𝐴 / (2 · π)) ∧ (𝐴 / (2 · π)) < (-1 + 1)) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
86	50, 75, 84, 85	syl3anc 1369	. . . . 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 812	. . 3 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → ¬ (𝐴 / (2 · π)) ∈ ℤ)
89	65	a1i 11	. . . 4 ⊢ (𝐴 ∈ ((-π[,]π) ∖ {0}) → (2 · π) ∈ ℝ⁺)
90		mod0 13865	. . . 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 2942	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 1534 ∈ wcel 2099 ≠ wne 2935 ∖ cdif 3941 ⊆ wss 3944 {csn 4624 class class class wbr 5142 (class class class)co 7414 ℂcc 11128 ℝcr 11129 0cc0 11130 1c1 11131 + caddc 11133 · cmul 11135 ℝ^*cxr 11269 < clt 11270 ≤ cle 11271 -cneg 11467 / cdiv 11893 2c2 12289 ℤcz 12580 ℝ⁺crp 12998 [,]cicc 13351 mod cmo 13858 πcpi 16034

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 2164 ax-ext 2698 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7734 ax-inf2 9656 ax-cnex 11186 ax-resscn 11187 ax-1cn 11188 ax-icn 11189 ax-addcl 11190 ax-addrcl 11191 ax-mulcl 11192 ax-mulrcl 11193 ax-mulcom 11194 ax-addass 11195 ax-mulass 11196 ax-distr 11197 ax-i2m1 11198 ax-1ne0 11199 ax-1rid 11200 ax-rnegex 11201 ax-rrecex 11202 ax-cnre 11203 ax-pre-lttri 11204 ax-pre-lttrn 11205 ax-pre-ltadd 11206 ax-pre-mulgt0 11207 ax-pre-sup 11208 ax-addf 11209

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 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2936 df-nel 3042 df-ral 3057 df-rex 3066 df-rmo 3371 df-reu 3372 df-rab 3428 df-v 3471 df-sbc 3775 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3963 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-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-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-er 8718 df-map 8838 df-pm 8839 df-ixp 8908 df-en 8956 df-dom 8957 df-sdom 8958 df-fin 8959 df-fsupp 9378 df-fi 9426 df-sup 9457 df-inf 9458 df-oi 9525 df-card 9954 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11468 df-neg 11469 df-div 11894 df-nn 12235 df-2 12297 df-3 12298 df-4 12299 df-5 12300 df-6 12301 df-7 12302 df-8 12303 df-9 12304 df-n0 12495 df-z 12581 df-dec 12700 df-uz 12845 df-q 12955 df-rp 12999 df-xneg 13116 df-xadd 13117 df-xmul 13118 df-ioo 13352 df-ioc 13353 df-ico 13354 df-icc 13355 df-fz 13509 df-fzo 13652 df-fl 13781 df-mod 13859 df-seq 13991 df-exp 14051 df-fac 14257 df-bc 14286 df-hash 14314 df-shft 15038 df-cj 15070 df-re 15071 df-im 15072 df-sqrt 15206 df-abs 15207 df-limsup 15439 df-clim 15456 df-rlim 15457 df-sum 15657 df-ef 16035 df-sin 16037 df-cos 16038 df-pi 16040 df-struct 17107 df-sets 17124 df-slot 17142 df-ndx 17154 df-base 17172 df-ress 17201 df-plusg 17237 df-mulr 17238 df-starv 17239 df-sca 17240 df-vsca 17241 df-ip 17242 df-tset 17243 df-ple 17244 df-ds 17246 df-unif 17247 df-hom 17248 df-cco 17249 df-rest 17395 df-topn 17396 df-0g 17414 df-gsum 17415 df-topgen 17416 df-pt 17417 df-prds 17420 df-xrs 17475 df-qtop 17480 df-imas 17481 df-xps 17483 df-mre 17557 df-mrc 17558 df-acs 17560 df-mgm 18591 df-sgrp 18670 df-mnd 18686 df-submnd 18732 df-mulg 19015 df-cntz 19259 df-cmn 19728 df-psmet 21258 df-xmet 21259 df-met 21260 df-bl 21261 df-mopn 21262 df-fbas 21263 df-fg 21264 df-cnfld 21267 df-top 22783 df-topon 22800 df-topsp 22822 df-bases 22836 df-cld 22910 df-ntr 22911 df-cls 22912 df-nei 22989 df-lp 23027 df-perf 23028 df-cn 23118 df-cnp 23119 df-haus 23206 df-tx 23453 df-hmeo 23646 df-fil 23737 df-fm 23829 df-flim 23830 df-flf 23831 df-xms 24213 df-ms 24214 df-tms 24215 df-cncf 24785 df-limc 25782 df-dv 25783

This theorem is referenced by: fourierdlem66 45483

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