fnlimabslt - Mathbox for Glauco Siliprandi

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Theorem fnlimabslt 44168

Description: A sequence of function values, approximates the corresponding limit function value, all but finitely many times. (Contributed by Glauco Siliprandi, 26-Jun-2021.)

**Hypotheses**
Ref	Expression
fnlimabslt.p	⊢ Ⅎ𝑚𝜑
fnlimabslt.f	⊢ Ⅎ𝑚𝐹
fnlimabslt.n	⊢ Ⅎ𝑥𝐹
fnlimabslt.m	⊢ (𝜑 → 𝑀 ∈ ℤ)
fnlimabslt.z	⊢ 𝑍 = (ℤ_≥‘𝑀)
fnlimabslt.b	⊢ ((𝜑 ∧ 𝑚 ∈ 𝑍) → (𝐹‘𝑚):dom (𝐹‘𝑚)⟶ℝ)
fnlimabslt.d	⊢ 𝐷 = {𝑥 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) ∣ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝ }
fnlimabslt.g	⊢ 𝐺 = (𝑥 ∈ 𝐷 ↦ ( ⇝ ‘(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥))))
fnlimabslt.x	⊢ (𝜑 → 𝑋 ∈ 𝐷)
fnlimabslt.y	⊢ (𝜑 → 𝑌 ∈ ℝ⁺)

**Assertion**
Ref	Expression
fnlimabslt	⊢ (𝜑 → ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℝ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))

Distinct variable groups: 𝑛,𝐹 𝑛,𝐺 𝑛,𝑀 𝑚,𝑋,𝑛 𝑚,𝑌,𝑛 𝑚,𝑍,𝑛,𝑥 𝜑,𝑛 Allowed substitution hints: 𝜑(𝑥,𝑚) 𝐷(𝑥,𝑚,𝑛) 𝐹(𝑥,𝑚) 𝐺(𝑥,𝑚) 𝑀(𝑥,𝑚) 𝑋(𝑥) 𝑌(𝑥)

Proof of Theorem fnlimabslt Dummy variables 𝑗 𝑙 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		fnlimabslt.p	. . . 4 ⊢ Ⅎ𝑚𝜑
2		fnlimabslt.z	. . . 4 ⊢ 𝑍 = (ℤ_≥‘𝑀)
3		fnlimabslt.b	. . . 4 ⊢ ((𝜑 ∧ 𝑚 ∈ 𝑍) → (𝐹‘𝑚):dom (𝐹‘𝑚)⟶ℝ)
4		eqid 2731	. . . 4 ⊢ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) = ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
5		fnlimabslt.d	. . . . . 6 ⊢ 𝐷 = {𝑥 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) ∣ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝ }
6		nfcv 2902	. . . . . . . . 9 ⊢ Ⅎ𝑥𝑍
7		nfcv 2902	. . . . . . . . . 10 ⊢ Ⅎ𝑥(ℤ_≥‘𝑛)
8		fnlimabslt.n	. . . . . . . . . . . 12 ⊢ Ⅎ𝑥𝐹
9		nfcv 2902	. . . . . . . . . . . 12 ⊢ Ⅎ𝑥𝑚
10	8, 9	nffv 6888	. . . . . . . . . . 11 ⊢ Ⅎ𝑥(𝐹‘𝑚)
11	10	nfdm 5942	. . . . . . . . . 10 ⊢ Ⅎ𝑥dom (𝐹‘𝑚)
12	7, 11	nfiin 5021	. . . . . . . . 9 ⊢ Ⅎ𝑥∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
13	6, 12	nfiun 5020	. . . . . . . 8 ⊢ Ⅎ𝑥∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
14		nfcv 2902	. . . . . . . 8 ⊢ Ⅎ𝑦∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
15		nfv 1917	. . . . . . . 8 ⊢ Ⅎ𝑦(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝
16		nfcv 2902	. . . . . . . . . . 11 ⊢ Ⅎ𝑥𝑦
17	10, 16	nffv 6888	. . . . . . . . . 10 ⊢ Ⅎ𝑥((𝐹‘𝑚)‘𝑦)
18	6, 17	nfmpt 5248	. . . . . . . . 9 ⊢ Ⅎ𝑥(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑦))
19		nfcv 2902	. . . . . . . . 9 ⊢ Ⅎ𝑥dom ⇝
20	18, 19	nfel 2916	. . . . . . . 8 ⊢ Ⅎ𝑥(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑦)) ∈ dom ⇝
21		fveq2 6878	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → ((𝐹‘𝑚)‘𝑥) = ((𝐹‘𝑚)‘𝑦))
22	21	mpteq2dv 5243	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) = (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑦)))
23	22	eleq1d 2817	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → ((𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝ ↔ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑦)) ∈ dom ⇝ ))
24	13, 14, 15, 20, 23	cbvrabw 3467	. . . . . . 7 ⊢ {𝑥 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) ∣ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝ } = {𝑦 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) ∣ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑦)) ∈ dom ⇝ }
25		ssrab2 4073	. . . . . . 7 ⊢ {𝑦 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) ∣ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑦)) ∈ dom ⇝ } ⊆ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
26	24, 25	eqsstri 4012	. . . . . 6 ⊢ {𝑥 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) ∣ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝ } ⊆ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
27	5, 26	eqsstri 4012	. . . . 5 ⊢ 𝐷 ⊆ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
28		fnlimabslt.x	. . . . 5 ⊢ (𝜑 → 𝑋 ∈ 𝐷)
29	27, 28	sselid 3976	. . . 4 ⊢ (𝜑 → 𝑋 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚))
30	1, 2, 3, 4, 29	allbutfifvre 44164	. . 3 ⊢ (𝜑 → ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐹‘𝑚)‘𝑋) ∈ ℝ)
31		nfv 1917	. . . . . 6 ⊢ Ⅎ𝑗𝜑
32		nfcv 2902	. . . . . 6 ⊢ Ⅎ𝑗(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑋))
33		fnlimabslt.m	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℤ)
34		fnlimabslt.g	. . . . . . 7 ⊢ 𝐺 = (𝑥 ∈ 𝐷 ↦ ( ⇝ ‘(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥))))
35	8, 5, 34, 28	fnlimcnv 44156	. . . . . 6 ⊢ (𝜑 → (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑋)) ⇝ (𝐺‘𝑋))
36		nfcv 2902	. . . . . . . 8 ⊢ Ⅎ𝑙((𝐹‘𝑚)‘𝑋)
37		fnlimabslt.f	. . . . . . . . . 10 ⊢ Ⅎ𝑚𝐹
38		nfcv 2902	. . . . . . . . . 10 ⊢ Ⅎ𝑚𝑙
39	37, 38	nffv 6888	. . . . . . . . 9 ⊢ Ⅎ𝑚(𝐹‘𝑙)
40		nfcv 2902	. . . . . . . . 9 ⊢ Ⅎ𝑚𝑋
41	39, 40	nffv 6888	. . . . . . . 8 ⊢ Ⅎ𝑚((𝐹‘𝑙)‘𝑋)
42		fveq2 6878	. . . . . . . . 9 ⊢ (𝑚 = 𝑙 → (𝐹‘𝑚) = (𝐹‘𝑙))
43	42	fveq1d 6880	. . . . . . . 8 ⊢ (𝑚 = 𝑙 → ((𝐹‘𝑚)‘𝑋) = ((𝐹‘𝑙)‘𝑋))
44	36, 41, 43	cbvmpt 5252	. . . . . . 7 ⊢ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑋)) = (𝑙 ∈ 𝑍 ↦ ((𝐹‘𝑙)‘𝑋))
45		fveq2 6878	. . . . . . . 8 ⊢ (𝑙 = 𝑗 → (𝐹‘𝑙) = (𝐹‘𝑗))
46	45	fveq1d 6880	. . . . . . 7 ⊢ (𝑙 = 𝑗 → ((𝐹‘𝑙)‘𝑋) = ((𝐹‘𝑗)‘𝑋))
47		simpr 485	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑗 ∈ 𝑍)
48		fvexd 6893	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ((𝐹‘𝑗)‘𝑋) ∈ V)
49	44, 46, 47, 48	fvmptd3 7007	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ((𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑋))‘𝑗) = ((𝐹‘𝑗)‘𝑋))
50		fnlimabslt.y	. . . . . 6 ⊢ (𝜑 → 𝑌 ∈ ℝ⁺)
51	31, 32, 2, 33, 35, 49, 50	climd 44161	. . . . 5 ⊢ (𝜑 → ∃𝑛 ∈ 𝑍 ∀𝑗 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑗)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
52		nfv 1917	. . . . . . 7 ⊢ Ⅎ𝑗(((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌)
53		nfcv 2902	. . . . . . . . . . 11 ⊢ Ⅎ𝑚𝑗
54	37, 53	nffv 6888	. . . . . . . . . 10 ⊢ Ⅎ𝑚(𝐹‘𝑗)
55	54, 40	nffv 6888	. . . . . . . . 9 ⊢ Ⅎ𝑚((𝐹‘𝑗)‘𝑋)
56		nfcv 2902	. . . . . . . . 9 ⊢ Ⅎ𝑚ℂ
57	55, 56	nfel 2916	. . . . . . . 8 ⊢ Ⅎ𝑚((𝐹‘𝑗)‘𝑋) ∈ ℂ
58		nfcv 2902	. . . . . . . . . 10 ⊢ Ⅎ𝑚abs
59		nfcv 2902	. . . . . . . . . . 11 ⊢ Ⅎ𝑚 −
60		nfmpt1 5249	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑚(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥))
61		nfcv 2902	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑚dom ⇝
62	60, 61	nfel 2916	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑚(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝
63		nfcv 2902	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑚𝑍
64		nfii1 5025	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑚∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
65	63, 64	nfiun 5020	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑚∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚)
66	62, 65	nfrabw 3468	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑚{𝑥 ∈ ∪ 𝑛 ∈ 𝑍 ∩ 𝑚 ∈ (ℤ_≥‘𝑛)dom (𝐹‘𝑚) ∣ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)) ∈ dom ⇝ }
67	5, 66	nfcxfr 2900	. . . . . . . . . . . . . 14 ⊢ Ⅎ𝑚𝐷
68		nfcv 2902	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑚 ⇝
69	68, 60	nffv 6888	. . . . . . . . . . . . . 14 ⊢ Ⅎ𝑚( ⇝ ‘(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥)))
70	67, 69	nfmpt 5248	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑚(𝑥 ∈ 𝐷 ↦ ( ⇝ ‘(𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚)‘𝑥))))
71	34, 70	nfcxfr 2900	. . . . . . . . . . . 12 ⊢ Ⅎ𝑚𝐺
72	71, 40	nffv 6888	. . . . . . . . . . 11 ⊢ Ⅎ𝑚(𝐺‘𝑋)
73	55, 59, 72	nfov 7423	. . . . . . . . . 10 ⊢ Ⅎ𝑚(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))
74	58, 73	nffv 6888	. . . . . . . . 9 ⊢ Ⅎ𝑚(abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋)))
75		nfcv 2902	. . . . . . . . 9 ⊢ Ⅎ𝑚 <
76		nfcv 2902	. . . . . . . . 9 ⊢ Ⅎ𝑚𝑌
77	74, 75, 76	nfbr 5188	. . . . . . . 8 ⊢ Ⅎ𝑚(abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))) < 𝑌
78	57, 77	nfan 1902	. . . . . . 7 ⊢ Ⅎ𝑚(((𝐹‘𝑗)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))) < 𝑌)
79		fveq2 6878	. . . . . . . . . 10 ⊢ (𝑚 = 𝑗 → (𝐹‘𝑚) = (𝐹‘𝑗))
80	79	fveq1d 6880	. . . . . . . . 9 ⊢ (𝑚 = 𝑗 → ((𝐹‘𝑚)‘𝑋) = ((𝐹‘𝑗)‘𝑋))
81	80	eleq1d 2817	. . . . . . . 8 ⊢ (𝑚 = 𝑗 → (((𝐹‘𝑚)‘𝑋) ∈ ℂ ↔ ((𝐹‘𝑗)‘𝑋) ∈ ℂ))
82	80	fvoveq1d 7415	. . . . . . . . 9 ⊢ (𝑚 = 𝑗 → (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) = (abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))))
83	82	breq1d 5151	. . . . . . . 8 ⊢ (𝑚 = 𝑗 → ((abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌 ↔ (abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
84	81, 83	anbi12d 631	. . . . . . 7 ⊢ (𝑚 = 𝑗 → ((((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) ↔ (((𝐹‘𝑗)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))) < 𝑌)))
85	52, 78, 84	cbvralw 3302	. . . . . 6 ⊢ (∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) ↔ ∀𝑗 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑗)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
86	85	rexbii 3093	. . . . 5 ⊢ (∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) ↔ ∃𝑛 ∈ 𝑍 ∀𝑗 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑗)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑗)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
87	51, 86	sylibr 233	. . . 4 ⊢ (𝜑 → ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
88		nfv 1917	. . . . . . 7 ⊢ Ⅎ𝑚 𝑛 ∈ 𝑍
89	1, 88	nfan 1902	. . . . . 6 ⊢ Ⅎ𝑚(𝜑 ∧ 𝑛 ∈ 𝑍)
90		simpr 485	. . . . . . 7 ⊢ ((((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) → (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌)
91	90	a1i 11	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘𝑛)) → ((((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) → (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
92	89, 91	ralimdaa 3256	. . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) → ∀𝑚 ∈ (ℤ_≥‘𝑛)(abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
93	92	reximdva 3167	. . . 4 ⊢ (𝜑 → (∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℂ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) → ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
94	87, 93	mpd 15	. . 3 ⊢ (𝜑 → ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌)
95	30, 94	jca 512	. 2 ⊢ (𝜑 → (∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐹‘𝑚)‘𝑋) ∈ ℝ ∧ ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
96	2	rexanuz2 15278	. 2 ⊢ (∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℝ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌) ↔ (∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐹‘𝑚)‘𝑋) ∈ ℝ ∧ ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))
97	95, 96	sylibr 233	1 ⊢ (𝜑 → ∃𝑛 ∈ 𝑍 ∀𝑚 ∈ (ℤ_≥‘𝑛)(((𝐹‘𝑚)‘𝑋) ∈ ℝ ∧ (abs‘(((𝐹‘𝑚)‘𝑋) − (𝐺‘𝑋))) < 𝑌))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 Ⅎwnf 1785 ∈ wcel 2106 Ⅎwnfc 2882 ∀wral 3060 ∃wrex 3069 {crab 3431 Vcvv 3473 ∪ ciun 4990 ∩ ciin 4991 class class class wbr 5141 ↦ cmpt 5224 dom cdm 5669 ⟶wf 6528 ‘cfv 6532 (class class class)co 7393 ℂcc 11090 ℝcr 11091 < clt 11230 − cmin 11426 ℤcz 12540 ℤ_≥cuz 12804 ℝ⁺crp 12956 abscabs 15163 ⇝ cli 15410

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 2702 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7708 ax-cnex 11148 ax-resscn 11149 ax-1cn 11150 ax-icn 11151 ax-addcl 11152 ax-addrcl 11153 ax-mulcl 11154 ax-mulrcl 11155 ax-mulcom 11156 ax-addass 11157 ax-mulass 11158 ax-distr 11159 ax-i2m1 11160 ax-1ne0 11161 ax-1rid 11162 ax-rnegex 11163 ax-rrecex 11164 ax-cnre 11165 ax-pre-lttri 11166 ax-pre-lttrn 11167 ax-pre-ltadd 11168 ax-pre-mulgt0 11169 ax-pre-sup 11170

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 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3375 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3963 df-nul 4319 df-if 4523 df-pw 4598 df-sn 4623 df-pr 4625 df-op 4629 df-uni 4902 df-iun 4992 df-iin 4993 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6289 df-ord 6356 df-on 6357 df-lim 6358 df-suc 6359 df-iota 6484 df-fun 6534 df-fn 6535 df-f 6536 df-f1 6537 df-fo 6538 df-f1o 6539 df-fv 6540 df-riota 7349 df-ov 7396 df-oprab 7397 df-mpo 7398 df-om 7839 df-2nd 7958 df-frecs 8248 df-wrecs 8279 df-recs 8353 df-rdg 8392 df-er 8686 df-en 8923 df-dom 8924 df-sdom 8925 df-sup 9419 df-pnf 11232 df-mnf 11233 df-xr 11234 df-ltxr 11235 df-le 11236 df-sub 11428 df-neg 11429 df-div 11854 df-nn 12195 df-2 12257 df-3 12258 df-n0 12455 df-z 12541 df-uz 12805 df-rp 12957 df-seq 13949 df-exp 14010 df-cj 15028 df-re 15029 df-im 15030 df-sqrt 15164 df-abs 15165 df-clim 15414

This theorem is referenced by: smflimlem4 45263

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