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Theorem rlimcnp 26467

Description: Relate a limit of a real-valued sequence at infinity to the continuity of the function 𝑆(𝑦) = 𝑅(1 / 𝑦) at zero. (Contributed by Mario Carneiro, 1-Mar-2015.)

**Hypotheses**
Ref	Expression
rlimcnp.a	⊢ (𝜑 → 𝐴 ⊆ (0[,)+∞))
rlimcnp.0	⊢ (𝜑 → 0 ∈ 𝐴)
rlimcnp.b	⊢ (𝜑 → 𝐵 ⊆ ℝ⁺)
rlimcnp.r	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑅 ∈ ℂ)
rlimcnp.d	⊢ ((𝜑 ∧ 𝑥 ∈ ℝ⁺) → (𝑥 ∈ 𝐴 ↔ (1 / 𝑥) ∈ 𝐵))
rlimcnp.c	⊢ (𝑥 = 0 → 𝑅 = 𝐶)
rlimcnp.s	⊢ (𝑥 = (1 / 𝑦) → 𝑅 = 𝑆)
rlimcnp.j	⊢ 𝐽 = (TopOpen‘ℂ_fld)
rlimcnp.k	⊢ 𝐾 = (𝐽 ↾_t 𝐴)

**Assertion**
Ref	Expression
rlimcnp	⊢ (𝜑 → ((𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶 ↔ (𝑥 ∈ 𝐴 ↦ 𝑅) ∈ ((𝐾 CnP 𝐽)‘0)))

Distinct variable groups: 𝑥,𝑦,𝐴 𝑥,𝐵,𝑦 𝑥,𝐶,𝑦 𝜑,𝑥,𝑦 𝑦,𝑅 𝑥,𝑆 Allowed substitution hints: 𝑅(𝑥) 𝑆(𝑦) 𝐽(𝑥,𝑦) 𝐾(𝑥,𝑦)

Proof of Theorem rlimcnp Dummy variables 𝑤 𝑟 𝑧 𝑡 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		rpreccl 12999	. . . . . . . . 9 ⊢ (𝑟 ∈ ℝ⁺ → (1 / 𝑟) ∈ ℝ⁺)
2	1	adantl 482	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑟 ∈ ℝ⁺) → (1 / 𝑟) ∈ ℝ⁺)
3		rpreccl 12999	. . . . . . . . 9 ⊢ (𝑡 ∈ ℝ⁺ → (1 / 𝑡) ∈ ℝ⁺)
4		rpcnne0 12991	. . . . . . . . . . . 12 ⊢ (𝑡 ∈ ℝ⁺ → (𝑡 ∈ ℂ ∧ 𝑡 ≠ 0))
5	4	adantl 482	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑡 ∈ ℝ⁺) → (𝑡 ∈ ℂ ∧ 𝑡 ≠ 0))
6		recrec 11910	. . . . . . . . . . 11 ⊢ ((𝑡 ∈ ℂ ∧ 𝑡 ≠ 0) → (1 / (1 / 𝑡)) = 𝑡)
7	5, 6	syl 17	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑡 ∈ ℝ⁺) → (1 / (1 / 𝑡)) = 𝑡)
8	7	eqcomd 2738	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑡 ∈ ℝ⁺) → 𝑡 = (1 / (1 / 𝑡)))
9		oveq2 7416	. . . . . . . . . 10 ⊢ (𝑟 = (1 / 𝑡) → (1 / 𝑟) = (1 / (1 / 𝑡)))
10	9	rspceeqv 3633	. . . . . . . . 9 ⊢ (((1 / 𝑡) ∈ ℝ⁺ ∧ 𝑡 = (1 / (1 / 𝑡))) → ∃𝑟 ∈ ℝ⁺ 𝑡 = (1 / 𝑟))
11	3, 8, 10	syl2an2 684	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑡 ∈ ℝ⁺) → ∃𝑟 ∈ ℝ⁺ 𝑡 = (1 / 𝑟))
12		simpr 485	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑡 = (1 / 𝑟)) → 𝑡 = (1 / 𝑟))
13	12	breq1d 5158	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑡 = (1 / 𝑟)) → (𝑡 < 𝑦 ↔ (1 / 𝑟) < 𝑦))
14	13	imbi1d 341	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑡 = (1 / 𝑟)) → ((𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
15	14	ralbidv 3177	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑡 = (1 / 𝑟)) → (∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
16	2, 11, 15	rexxfrd 5407	. . . . . . 7 ⊢ (𝜑 → (∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∃𝑟 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
17	16	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ ℝ⁺) → (∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∃𝑟 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
18		simplr 767	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → 𝑟 ∈ ℝ⁺)
19		rlimcnp.b	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐵 ⊆ ℝ⁺)
20	19	sselda 3982	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ ℝ⁺)
21	20	adantlr 713	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ ℝ⁺)
22		elrp 12975	. . . . . . . . . . . . . 14 ⊢ (𝑟 ∈ ℝ⁺ ↔ (𝑟 ∈ ℝ ∧ 0 < 𝑟))
23		elrp 12975	. . . . . . . . . . . . . 14 ⊢ (𝑦 ∈ ℝ⁺ ↔ (𝑦 ∈ ℝ ∧ 0 < 𝑦))
24		ltrec1 12100	. . . . . . . . . . . . . 14 ⊢ (((𝑟 ∈ ℝ ∧ 0 < 𝑟) ∧ (𝑦 ∈ ℝ ∧ 0 < 𝑦)) → ((1 / 𝑟) < 𝑦 ↔ (1 / 𝑦) < 𝑟))
25	22, 23, 24	syl2anb 598	. . . . . . . . . . . . 13 ⊢ ((𝑟 ∈ ℝ⁺ ∧ 𝑦 ∈ ℝ⁺) → ((1 / 𝑟) < 𝑦 ↔ (1 / 𝑦) < 𝑟))
26	18, 21, 25	syl2anc 584	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → ((1 / 𝑟) < 𝑦 ↔ (1 / 𝑦) < 𝑟))
27	26	imbi1d 341	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → (((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ((1 / 𝑦) < 𝑟 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
28	27	ralbidva 3175	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑟 ∈ ℝ⁺) → (∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∀𝑦 ∈ 𝐵 ((1 / 𝑦) < 𝑟 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
29	28	adantlr 713	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∀𝑦 ∈ 𝐵 ((1 / 𝑦) < 𝑟 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
30		rpcn 12983	. . . . . . . . . . . . . . . 16 ⊢ (𝑦 ∈ ℝ⁺ → 𝑦 ∈ ℂ)
31		rpne0 12989	. . . . . . . . . . . . . . . 16 ⊢ (𝑦 ∈ ℝ⁺ → 𝑦 ≠ 0)
32	30, 31	recrecd 11986	. . . . . . . . . . . . . . 15 ⊢ (𝑦 ∈ ℝ⁺ → (1 / (1 / 𝑦)) = 𝑦)
33	20, 32	syl 17	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → (1 / (1 / 𝑦)) = 𝑦)
34		simpr 485	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ 𝐵)
35	33, 34	eqeltrd 2833	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → (1 / (1 / 𝑦)) ∈ 𝐵)
36		eleq1 2821	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = (1 / 𝑦) → (𝑥 ∈ 𝐴 ↔ (1 / 𝑦) ∈ 𝐴))
37		oveq2 7416	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = (1 / 𝑦) → (1 / 𝑥) = (1 / (1 / 𝑦)))
38	37	eleq1d 2818	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = (1 / 𝑦) → ((1 / 𝑥) ∈ 𝐵 ↔ (1 / (1 / 𝑦)) ∈ 𝐵))
39	36, 38	bibi12d 345	. . . . . . . . . . . . . 14 ⊢ (𝑥 = (1 / 𝑦) → ((𝑥 ∈ 𝐴 ↔ (1 / 𝑥) ∈ 𝐵) ↔ ((1 / 𝑦) ∈ 𝐴 ↔ (1 / (1 / 𝑦)) ∈ 𝐵)))
40		rlimcnp.d	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ⁺) → (𝑥 ∈ 𝐴 ↔ (1 / 𝑥) ∈ 𝐵))
41	40	ralrimiva 3146	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ∀𝑥 ∈ ℝ⁺ (𝑥 ∈ 𝐴 ↔ (1 / 𝑥) ∈ 𝐵))
42	41	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → ∀𝑥 ∈ ℝ⁺ (𝑥 ∈ 𝐴 ↔ (1 / 𝑥) ∈ 𝐵))
43	20	rpreccld 13025	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → (1 / 𝑦) ∈ ℝ⁺)
44	39, 42, 43	rspcdva 3613	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → ((1 / 𝑦) ∈ 𝐴 ↔ (1 / (1 / 𝑦)) ∈ 𝐵))
45	35, 44	mpbird 256	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → (1 / 𝑦) ∈ 𝐴)
46	43	rpne0d 13020	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → (1 / 𝑦) ≠ 0)
47		eldifsn 4790	. . . . . . . . . . . 12 ⊢ ((1 / 𝑦) ∈ (𝐴 ∖ {0}) ↔ ((1 / 𝑦) ∈ 𝐴 ∧ (1 / 𝑦) ≠ 0))
48	45, 46, 47	sylanbrc 583	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → (1 / 𝑦) ∈ (𝐴 ∖ {0}))
49		eldifi 4126	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ (𝐴 ∖ {0}) → 𝑥 ∈ 𝐴)
50	49	adantl 482	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 𝑥 ∈ 𝐴)
51		rge0ssre 13432	. . . . . . . . . . . . . . . 16 ⊢ (0[,)+∞) ⊆ ℝ
52		rlimcnp.a	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → 𝐴 ⊆ (0[,)+∞))
53	52	ssdifssd 4142	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (𝐴 ∖ {0}) ⊆ (0[,)+∞))
54	53	sselda 3982	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 𝑥 ∈ (0[,)+∞))
55	51, 54	sselid 3980	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 𝑥 ∈ ℝ)
56		0re 11215	. . . . . . . . . . . . . . . . . . 19 ⊢ 0 ∈ ℝ
57		pnfxr 11267	. . . . . . . . . . . . . . . . . . 19 ⊢ +∞ ∈ ℝ^*
58		elico2 13387	. . . . . . . . . . . . . . . . . . 19 ⊢ ((0 ∈ ℝ ∧ +∞ ∈ ℝ^*) → (𝑥 ∈ (0[,)+∞) ↔ (𝑥 ∈ ℝ ∧ 0 ≤ 𝑥 ∧ 𝑥 < +∞)))
59	56, 57, 58	mp2an 690	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 ∈ (0[,)+∞) ↔ (𝑥 ∈ ℝ ∧ 0 ≤ 𝑥 ∧ 𝑥 < +∞))
60	59	simp2bi 1146	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 ∈ (0[,)+∞) → 0 ≤ 𝑥)
61	54, 60	syl 17	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 0 ≤ 𝑥)
62		eldifsni 4793	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 ∈ (𝐴 ∖ {0}) → 𝑥 ≠ 0)
63	62	adantl 482	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 𝑥 ≠ 0)
64	55, 61, 63	ne0gt0d 11350	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 0 < 𝑥)
65	55, 64	elrpd 13012	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 𝑥 ∈ ℝ⁺)
66	65, 40	syldan 591	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → (𝑥 ∈ 𝐴 ↔ (1 / 𝑥) ∈ 𝐵))
67	50, 66	mpbid 231	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → (1 / 𝑥) ∈ 𝐵)
68		rpcn 12983	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ℝ⁺ → 𝑥 ∈ ℂ)
69		rpne0 12989	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ℝ⁺ → 𝑥 ≠ 0)
70	68, 69	recrecd 11986	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ℝ⁺ → (1 / (1 / 𝑥)) = 𝑥)
71	65, 70	syl 17	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → (1 / (1 / 𝑥)) = 𝑥)
72	71	eqcomd 2738	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → 𝑥 = (1 / (1 / 𝑥)))
73		oveq2 7416	. . . . . . . . . . . . 13 ⊢ (𝑦 = (1 / 𝑥) → (1 / 𝑦) = (1 / (1 / 𝑥)))
74	73	rspceeqv 3633	. . . . . . . . . . . 12 ⊢ (((1 / 𝑥) ∈ 𝐵 ∧ 𝑥 = (1 / (1 / 𝑥))) → ∃𝑦 ∈ 𝐵 𝑥 = (1 / 𝑦))
75	67, 72, 74	syl2anc 584	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴 ∖ {0})) → ∃𝑦 ∈ 𝐵 𝑥 = (1 / 𝑦))
76		breq1 5151	. . . . . . . . . . . . 13 ⊢ (𝑥 = (1 / 𝑦) → (𝑥 < 𝑟 ↔ (1 / 𝑦) < 𝑟))
77		rlimcnp.s	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = (1 / 𝑦) → 𝑅 = 𝑆)
78	77	fvoveq1d 7430	. . . . . . . . . . . . . 14 ⊢ (𝑥 = (1 / 𝑦) → (abs‘(𝑅 − 𝐶)) = (abs‘(𝑆 − 𝐶)))
79	78	breq1d 5158	. . . . . . . . . . . . 13 ⊢ (𝑥 = (1 / 𝑦) → ((abs‘(𝑅 − 𝐶)) < 𝑧 ↔ (abs‘(𝑆 − 𝐶)) < 𝑧))
80	76, 79	imbi12d 344	. . . . . . . . . . . 12 ⊢ (𝑥 = (1 / 𝑦) → ((𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ ((1 / 𝑦) < 𝑟 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
81	80	adantl 482	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 = (1 / 𝑦)) → ((𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ ((1 / 𝑦) < 𝑟 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
82	48, 75, 81	ralxfrd 5406	. . . . . . . . . 10 ⊢ (𝜑 → (∀𝑥 ∈ (𝐴 ∖ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ ∀𝑦 ∈ 𝐵 ((1 / 𝑦) < 𝑟 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
83	82	ad2antrr 724	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (∀𝑥 ∈ (𝐴 ∖ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ ∀𝑦 ∈ 𝐵 ((1 / 𝑦) < 𝑟 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
84	29, 83	bitr4d 281	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∀𝑥 ∈ (𝐴 ∖ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
85		elsni 4645	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 ∈ {0} → 𝑥 = 0)
86	85	adantl 482	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → 𝑥 = 0)
87		rlimcnp.c	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 0 → 𝑅 = 𝐶)
88	86, 87	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → 𝑅 = 𝐶)
89	88	oveq1d 7423	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → (𝑅 − 𝐶) = (𝐶 − 𝐶))
90	87	eleq1d 2818	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 = 0 → (𝑅 ∈ ℂ ↔ 𝐶 ∈ ℂ))
91		rlimcnp.r	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑅 ∈ ℂ)
92	91	ralrimiva 3146	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝑅 ∈ ℂ)
93		rlimcnp.0	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 0 ∈ 𝐴)
94	90, 92, 93	rspcdva 3613	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → 𝐶 ∈ ℂ)
95	94	subidd 11558	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (𝐶 − 𝐶) = 0)
96	95	ad2antrr 724	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → (𝐶 − 𝐶) = 0)
97	89, 96	eqtrd 2772	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → (𝑅 − 𝐶) = 0)
98	97	abs00bd 15237	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → (abs‘(𝑅 − 𝐶)) = 0)
99		rpgt0 12985	. . . . . . . . . . . . . . 15 ⊢ (𝑧 ∈ ℝ⁺ → 0 < 𝑧)
100	99	ad2antlr 725	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → 0 < 𝑧)
101	98, 100	eqbrtrd 5170	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → (abs‘(𝑅 − 𝐶)) < 𝑧)
102	101	a1d 25	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑥 ∈ {0}) → (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧))
103	102	ralrimiva 3146	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑧 ∈ ℝ⁺) → ∀𝑥 ∈ {0} (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧))
104	103	adantr 481	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → ∀𝑥 ∈ {0} (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧))
105	104	biantrud 532	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (∀𝑥 ∈ (𝐴 ∖ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ (∀𝑥 ∈ (𝐴 ∖ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ∧ ∀𝑥 ∈ {0} (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧))))
106		ralunb 4191	. . . . . . . . 9 ⊢ (∀𝑥 ∈ ((𝐴 ∖ {0}) ∪ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ (∀𝑥 ∈ (𝐴 ∖ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ∧ ∀𝑥 ∈ {0} (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
107	105, 106	bitr4di 288	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (∀𝑥 ∈ (𝐴 ∖ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ ∀𝑥 ∈ ((𝐴 ∖ {0}) ∪ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
108		undif1 4475	. . . . . . . . . 10 ⊢ ((𝐴 ∖ {0}) ∪ {0}) = (𝐴 ∪ {0})
109	93	ad2antrr 724	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → 0 ∈ 𝐴)
110	109	snssd 4812	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → {0} ⊆ 𝐴)
111		ssequn2 4183	. . . . . . . . . . 11 ⊢ ({0} ⊆ 𝐴 ↔ (𝐴 ∪ {0}) = 𝐴)
112	110, 111	sylib 217	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (𝐴 ∪ {0}) = 𝐴)
113	108, 112	eqtrid 2784	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → ((𝐴 ∖ {0}) ∪ {0}) = 𝐴)
114	113	raleqdv 3325	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (∀𝑥 ∈ ((𝐴 ∖ {0}) ∪ {0})(𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧) ↔ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
115	84, 107, 114	3bitrd 304	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑧 ∈ ℝ⁺) ∧ 𝑟 ∈ ℝ⁺) → (∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
116	115	rexbidva 3176	. . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ ℝ⁺) → (∃𝑟 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 ((1 / 𝑟) < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∃𝑟 ∈ ℝ⁺ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
117	17, 116	bitrd 278	. . . . 5 ⊢ ((𝜑 ∧ 𝑧 ∈ ℝ⁺) → (∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∃𝑟 ∈ ℝ⁺ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
118	117	ralbidva 3175	. . . 4 ⊢ (𝜑 → (∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
119		nfv 1917	. . . . . . . . 9 ⊢ Ⅎ𝑥(𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟
120		nffvmpt1 6902	. . . . . . . . . . 11 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)
121		nfcv 2903	. . . . . . . . . . 11 ⊢ Ⅎ𝑥(abs ∘ − )
122		nffvmpt1 6902	. . . . . . . . . . 11 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)
123	120, 121, 122	nfov 7438	. . . . . . . . . 10 ⊢ Ⅎ𝑥(((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0))
124		nfcv 2903	. . . . . . . . . 10 ⊢ Ⅎ𝑥 <
125		nfcv 2903	. . . . . . . . . 10 ⊢ Ⅎ𝑥𝑧
126	123, 124, 125	nfbr 5195	. . . . . . . . 9 ⊢ Ⅎ𝑥(((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧
127	119, 126	nfim 1899	. . . . . . . 8 ⊢ Ⅎ𝑥((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧)
128		nfv 1917	. . . . . . . 8 ⊢ Ⅎ𝑤((𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧)
129		oveq1 7415	. . . . . . . . . 10 ⊢ (𝑤 = 𝑥 → (𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) = (𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0))
130	129	breq1d 5158	. . . . . . . . 9 ⊢ (𝑤 = 𝑥 → ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 ↔ (𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟))
131		fveq2 6891	. . . . . . . . . . 11 ⊢ (𝑤 = 𝑥 → ((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤) = ((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥))
132	131	oveq1d 7423	. . . . . . . . . 10 ⊢ (𝑤 = 𝑥 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) = (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)))
133	132	breq1d 5158	. . . . . . . . 9 ⊢ (𝑤 = 𝑥 → ((((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧 ↔ (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧))
134	130, 133	imbi12d 344	. . . . . . . 8 ⊢ (𝑤 = 𝑥 → (((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ ((𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧)))
135	127, 128, 134	cbvralw 3303	. . . . . . 7 ⊢ (∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ ∀𝑥 ∈ 𝐴 ((𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧))
136		simpr 485	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴)
137	93	adantr 481	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 0 ∈ 𝐴)
138	136, 137	ovresd 7573	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) = (𝑥(abs ∘ − )0))
139	52, 51	sstrdi 3994	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐴 ⊆ ℝ)
140		ax-resscn 11166	. . . . . . . . . . . . . . 15 ⊢ ℝ ⊆ ℂ
141	139, 140	sstrdi 3994	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝐴 ⊆ ℂ)
142	141	sselda 3982	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℂ)
143		0cnd 11206	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 0 ∈ ℂ)
144		eqid 2732	. . . . . . . . . . . . . 14 ⊢ (abs ∘ − ) = (abs ∘ − )
145	144	cnmetdval 24286	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ 0 ∈ ℂ) → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0)))
146	142, 143, 145	syl2anc 584	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0)))
147	142	subid1d 11559	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑥 − 0) = 𝑥)
148	147	fveq2d 6895	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (abs‘(𝑥 − 0)) = (abs‘𝑥))
149	138, 146, 148	3eqtrd 2776	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) = (abs‘𝑥))
150	139	sselda 3982	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ)
151	52	sselda 3982	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ (0[,)+∞))
152	151, 60	syl 17	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 0 ≤ 𝑥)
153	150, 152	absidd 15368	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (abs‘𝑥) = 𝑥)
154	149, 153	eqtrd 2772	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) = 𝑥)
155	154	breq1d 5158	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 ↔ 𝑥 < 𝑟))
156		eqid 2732	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ 𝐴 ↦ 𝑅) = (𝑥 ∈ 𝐴 ↦ 𝑅)
157	156	fvmpt2 7009	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑅 ∈ ℂ) → ((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥) = 𝑅)
158	136, 91, 157	syl2anc 584	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥) = 𝑅)
159	94	adantr 481	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ ℂ)
160	156, 87, 137, 159	fvmptd3 7021	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ 𝑅)‘0) = 𝐶)
161	158, 160	oveq12d 7426	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) = (𝑅(abs ∘ − )𝐶))
162	144	cnmetdval 24286	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝑅(abs ∘ − )𝐶) = (abs‘(𝑅 − 𝐶)))
163	91, 159, 162	syl2anc 584	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑅(abs ∘ − )𝐶) = (abs‘(𝑅 − 𝐶)))
164	161, 163	eqtrd 2772	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) = (abs‘(𝑅 − 𝐶)))
165	164	breq1d 5158	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧 ↔ (abs‘(𝑅 − 𝐶)) < 𝑧))
166	155, 165	imbi12d 344	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (((𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
167	166	ralbidva 3175	. . . . . . 7 ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ((𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑥)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
168	135, 167	bitrid 282	. . . . . 6 ⊢ (𝜑 → (∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
169	168	rexbidv 3178	. . . . 5 ⊢ (𝜑 → (∃𝑟 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ ∃𝑟 ∈ ℝ⁺ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
170	169	ralbidv 3177	. . . 4 ⊢ (𝜑 → (∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ ∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑥 ∈ 𝐴 (𝑥 < 𝑟 → (abs‘(𝑅 − 𝐶)) < 𝑧)))
171	91	fmpttd 7114	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑅):𝐴⟶ℂ)
172	171	biantrurd 533	. . . 4 ⊢ (𝜑 → (∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧) ↔ ((𝑥 ∈ 𝐴 ↦ 𝑅):𝐴⟶ℂ ∧ ∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧))))
173	118, 170, 172	3bitr2d 306	. . 3 ⊢ (𝜑 → (∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) ↔ ((𝑥 ∈ 𝐴 ↦ 𝑅):𝐴⟶ℂ ∧ ∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧))))
174	77	eleq1d 2818	. . . . . . . 8 ⊢ (𝑥 = (1 / 𝑦) → (𝑅 ∈ ℂ ↔ 𝑆 ∈ ℂ))
175	92	adantr 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → ∀𝑥 ∈ 𝐴 𝑅 ∈ ℂ)
176	174, 175, 45	rspcdva 3613	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑆 ∈ ℂ)
177	176	ralrimiva 3146	. . . . . 6 ⊢ (𝜑 → ∀𝑦 ∈ 𝐵 𝑆 ∈ ℂ)
178		rpssre 12980	. . . . . . 7 ⊢ ℝ⁺ ⊆ ℝ
179	19, 178	sstrdi 3994	. . . . . 6 ⊢ (𝜑 → 𝐵 ⊆ ℝ)
180		1red 11214	. . . . . 6 ⊢ (𝜑 → 1 ∈ ℝ)
181	177, 179, 94, 180	rlim3 15441	. . . . 5 ⊢ (𝜑 → ((𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶 ↔ ∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ (1[,)+∞)∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
182		0xr 11260	. . . . . . . . . 10 ⊢ 0 ∈ ℝ^*
183		0lt1 11735	. . . . . . . . . 10 ⊢ 0 < 1
184		df-ioo 13327	. . . . . . . . . . 11 ⊢ (,) = (𝑥 ∈ ℝ^, 𝑦 ∈ ℝ^ ↦ {𝑧 ∈ ℝ^* ∣ (𝑥 < 𝑧 ∧ 𝑧 < 𝑦)})
185		df-ico 13329	. . . . . . . . . . 11 ⊢ [,) = (𝑥 ∈ ℝ^, 𝑦 ∈ ℝ^ ↦ {𝑧 ∈ ℝ^* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)})
186		xrltletr 13135	. . . . . . . . . . 11 ⊢ ((0 ∈ ℝ^* ∧ 1 ∈ ℝ^* ∧ 𝑤 ∈ ℝ^*) → ((0 < 1 ∧ 1 ≤ 𝑤) → 0 < 𝑤))
187	184, 185, 186	ixxss1 13341	. . . . . . . . . 10 ⊢ ((0 ∈ ℝ^* ∧ 0 < 1) → (1[,)+∞) ⊆ (0(,)+∞))
188	182, 183, 187	mp2an 690	. . . . . . . . 9 ⊢ (1[,)+∞) ⊆ (0(,)+∞)
189		ioorp 13401	. . . . . . . . 9 ⊢ (0(,)+∞) = ℝ⁺
190	188, 189	sseqtri 4018	. . . . . . . 8 ⊢ (1[,)+∞) ⊆ ℝ⁺
191		ssrexv 4051	. . . . . . . 8 ⊢ ((1[,)+∞) ⊆ ℝ⁺ → (∃𝑡 ∈ (1[,)+∞)∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
192	190, 191	ax-mp 5	. . . . . . 7 ⊢ (∃𝑡 ∈ (1[,)+∞)∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧))
193		simplr 767	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑡 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → 𝑡 ∈ ℝ⁺)
194	178, 193	sselid 3980	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑡 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → 𝑡 ∈ ℝ)
195	179	adantr 481	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑡 ∈ ℝ⁺) → 𝐵 ⊆ ℝ)
196	195	sselda 3982	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑡 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ ℝ)
197		ltle 11301	. . . . . . . . . . 11 ⊢ ((𝑡 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑡 < 𝑦 → 𝑡 ≤ 𝑦))
198	194, 196, 197	syl2anc 584	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑡 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → (𝑡 < 𝑦 → 𝑡 ≤ 𝑦))
199	198	imim1d 82	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑡 ∈ ℝ⁺) ∧ 𝑦 ∈ 𝐵) → ((𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
200	199	ralimdva 3167	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑡 ∈ ℝ⁺) → (∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
201	200	reximdva 3168	. . . . . . 7 ⊢ (𝜑 → (∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
202	192, 201	syl5 34	. . . . . 6 ⊢ (𝜑 → (∃𝑡 ∈ (1[,)+∞)∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
203	202	ralimdv 3169	. . . . 5 ⊢ (𝜑 → (∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ (1[,)+∞)∀𝑦 ∈ 𝐵 (𝑡 ≤ 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
204	181, 203	sylbid 239	. . . 4 ⊢ (𝜑 → ((𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶 → ∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
205		ssrexv 4051	. . . . . . 7 ⊢ (ℝ⁺ ⊆ ℝ → (∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∃𝑡 ∈ ℝ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
206	178, 205	ax-mp 5	. . . . . 6 ⊢ (∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∃𝑡 ∈ ℝ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧))
207	206	ralimi 3083	. . . . 5 ⊢ (∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → ∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧))
208	177, 179, 94	rlim2lt 15440	. . . . 5 ⊢ (𝜑 → ((𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶 ↔ ∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
209	207, 208	imbitrrid 245	. . . 4 ⊢ (𝜑 → (∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧) → (𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶))
210	204, 209	impbid 211	. . 3 ⊢ (𝜑 → ((𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶 ↔ ∀𝑧 ∈ ℝ⁺ ∃𝑡 ∈ ℝ⁺ ∀𝑦 ∈ 𝐵 (𝑡 < 𝑦 → (abs‘(𝑆 − 𝐶)) < 𝑧)))
211		cnxmet 24288	. . . . 5 ⊢ (abs ∘ − ) ∈ (∞Met‘ℂ)
212		xmetres2 23866	. . . . 5 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝐴 ⊆ ℂ) → ((abs ∘ − ) ↾ (𝐴 × 𝐴)) ∈ (∞Met‘𝐴))
213	211, 141, 212	sylancr 587	. . . 4 ⊢ (𝜑 → ((abs ∘ − ) ↾ (𝐴 × 𝐴)) ∈ (∞Met‘𝐴))
214	211	a1i 11	. . . 4 ⊢ (𝜑 → (abs ∘ − ) ∈ (∞Met‘ℂ))
215		eqid 2732	. . . . 5 ⊢ (MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))) = (MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴)))
216		rlimcnp.j	. . . . . 6 ⊢ 𝐽 = (TopOpen‘ℂ_fld)
217	216	cnfldtopn 24297	. . . . 5 ⊢ 𝐽 = (MetOpen‘(abs ∘ − ))
218	215, 217	metcnp2 24050	. . . 4 ⊢ ((((abs ∘ − ) ↾ (𝐴 × 𝐴)) ∈ (∞Met‘𝐴) ∧ (abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 0 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (((MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))) CnP 𝐽)‘0) ↔ ((𝑥 ∈ 𝐴 ↦ 𝑅):𝐴⟶ℂ ∧ ∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧))))
219	213, 214, 93, 218	syl3anc 1371	. . 3 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (((MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))) CnP 𝐽)‘0) ↔ ((𝑥 ∈ 𝐴 ↦ 𝑅):𝐴⟶ℂ ∧ ∀𝑧 ∈ ℝ⁺ ∃𝑟 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑤((abs ∘ − ) ↾ (𝐴 × 𝐴))0) < 𝑟 → (((𝑥 ∈ 𝐴 ↦ 𝑅)‘𝑤)(abs ∘ − )((𝑥 ∈ 𝐴 ↦ 𝑅)‘0)) < 𝑧))))
220	173, 210, 219	3bitr4d 310	. 2 ⊢ (𝜑 → ((𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶 ↔ (𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (((MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))) CnP 𝐽)‘0)))
221		rlimcnp.k	. . . . . 6 ⊢ 𝐾 = (𝐽 ↾_t 𝐴)
222		eqid 2732	. . . . . . . 8 ⊢ ((abs ∘ − ) ↾ (𝐴 × 𝐴)) = ((abs ∘ − ) ↾ (𝐴 × 𝐴))
223	222, 217, 215	metrest 24032	. . . . . . 7 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝐴 ⊆ ℂ) → (𝐽 ↾_t 𝐴) = (MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))))
224	211, 141, 223	sylancr 587	. . . . . 6 ⊢ (𝜑 → (𝐽 ↾_t 𝐴) = (MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))))
225	221, 224	eqtrid 2784	. . . . 5 ⊢ (𝜑 → 𝐾 = (MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))))
226	225	oveq1d 7423	. . . 4 ⊢ (𝜑 → (𝐾 CnP 𝐽) = ((MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))) CnP 𝐽))
227	226	fveq1d 6893	. . 3 ⊢ (𝜑 → ((𝐾 CnP 𝐽)‘0) = (((MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))) CnP 𝐽)‘0))
228	227	eleq2d 2819	. 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝑅) ∈ ((𝐾 CnP 𝐽)‘0) ↔ (𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (((MetOpen‘((abs ∘ − ) ↾ (𝐴 × 𝐴))) CnP 𝐽)‘0)))
229	220, 228	bitr4d 281	1 ⊢ (𝜑 → ((𝑦 ∈ 𝐵 ↦ 𝑆) ⇝_𝑟 𝐶 ↔ (𝑥 ∈ 𝐴 ↦ 𝑅) ∈ ((𝐾 CnP 𝐽)‘0)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1087 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∀wral 3061 ∃wrex 3070 ∖ cdif 3945 ∪ cun 3946 ⊆ wss 3948 {csn 4628 class class class wbr 5148 ↦ cmpt 5231 × cxp 5674 ↾ cres 5678 ∘ ccom 5680 ⟶wf 6539 ‘cfv 6543 (class class class)co 7408 ℂcc 11107 ℝcr 11108 0cc0 11109 1c1 11110 +∞cpnf 11244 ℝ^*cxr 11246 < clt 11247 ≤ cle 11248 − cmin 11443 / cdiv 11870 ℝ⁺crp 12973 (,)cioo 13323 [,)cico 13325 abscabs 15180 ⇝_𝑟 crli 15428 ↾_t crest 17365 TopOpenctopn 17366 ∞Metcxmet 20928 MetOpencmopn 20933 ℂ_fldccnfld 20943 CnP ccnp 22728

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 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187

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 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 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-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7855 df-1st 7974 df-2nd 7975 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-1o 8465 df-er 8702 df-map 8821 df-pm 8822 df-en 8939 df-dom 8940 df-sdom 8941 df-fin 8942 df-sup 9436 df-inf 9437 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-nn 12212 df-2 12274 df-3 12275 df-4 12276 df-5 12277 df-6 12278 df-7 12279 df-8 12280 df-9 12281 df-n0 12472 df-z 12558 df-dec 12677 df-uz 12822 df-q 12932 df-rp 12974 df-xneg 13091 df-xadd 13092 df-xmul 13093 df-ioo 13327 df-ico 13329 df-fz 13484 df-seq 13966 df-exp 14027 df-cj 15045 df-re 15046 df-im 15047 df-sqrt 15181 df-abs 15182 df-rlim 15432 df-struct 17079 df-slot 17114 df-ndx 17126 df-base 17144 df-plusg 17209 df-mulr 17210 df-starv 17211 df-tset 17215 df-ple 17216 df-ds 17218 df-unif 17219 df-rest 17367 df-topn 17368 df-topgen 17388 df-psmet 20935 df-xmet 20936 df-met 20937 df-bl 20938 df-mopn 20939 df-cnfld 20944 df-top 22395 df-topon 22412 df-bases 22448 df-cnp 22731

This theorem is referenced by: rlimcnp2 26468

W3C validator