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Theorem iscmet3lem2 25040

Description: Lemma for iscmet3 25041. (Contributed by Mario Carneiro, 15-Oct-2015.)

**Hypotheses**
Ref	Expression
iscmet3.1	⊢ 𝑍 = (ℤ_≥‘𝑀)
iscmet3.2	⊢ 𝐽 = (MetOpen‘𝐷)
iscmet3.3	⊢ (𝜑 → 𝑀 ∈ ℤ)
iscmet3.4	⊢ (𝜑 → 𝐷 ∈ (Met‘𝑋))
iscmet3.6	⊢ (𝜑 → 𝐹:𝑍⟶𝑋)
iscmet3.9	⊢ (𝜑 → ∀𝑘 ∈ ℤ ∀𝑢 ∈ (𝑆‘𝑘)∀𝑣 ∈ (𝑆‘𝑘)(𝑢𝐷𝑣) < ((1 / 2)↑𝑘))
iscmet3.10	⊢ (𝜑 → ∀𝑘 ∈ 𝑍 ∀𝑛 ∈ (𝑀...𝑘)(𝐹‘𝑘) ∈ (𝑆‘𝑛))
iscmet3.7	⊢ (𝜑 → 𝐺 ∈ (Fil‘𝑋))
iscmet3.8	⊢ (𝜑 → 𝑆:ℤ⟶𝐺)
iscmet3.5	⊢ (𝜑 → 𝐹 ∈ dom (⇝_𝑡‘𝐽))

**Assertion**
Ref	Expression
iscmet3lem2	⊢ (𝜑 → (𝐽 fLim 𝐺) ≠ ∅)

Distinct variable groups: 𝑘,𝑛,𝑢,𝑣,𝐷 𝑘,𝐺 𝑘,𝐹,𝑛,𝑢,𝑣 𝑘,𝑋,𝑛 𝑘,𝐽,𝑛 𝑆,𝑘,𝑛,𝑢,𝑣 𝑘,𝑍,𝑛 𝑘,𝑀,𝑛 𝜑,𝑘,𝑛 Allowed substitution hints: 𝜑(𝑣,𝑢) 𝐺(𝑣,𝑢,𝑛) 𝐽(𝑣,𝑢) 𝑀(𝑣,𝑢) 𝑋(𝑣,𝑢) 𝑍(𝑣,𝑢)

Proof of Theorem iscmet3lem2 Dummy variables 𝑗 𝑟 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		iscmet3.5	. . 3 ⊢ (𝜑 → 𝐹 ∈ dom (⇝_𝑡‘𝐽))
2		eldmg 5897	. . . 4 ⊢ (𝐹 ∈ dom (⇝_𝑡‘𝐽) → (𝐹 ∈ dom (⇝_𝑡‘𝐽) ↔ ∃𝑥 𝐹(⇝_𝑡‘𝐽)𝑥))
3	2	ibi 266	. . 3 ⊢ (𝐹 ∈ dom (⇝_𝑡‘𝐽) → ∃𝑥 𝐹(⇝_𝑡‘𝐽)𝑥)
4	1, 3	syl 17	. 2 ⊢ (𝜑 → ∃𝑥 𝐹(⇝_𝑡‘𝐽)𝑥)
5		iscmet3.4	. . . . . . 7 ⊢ (𝜑 → 𝐷 ∈ (Met‘𝑋))
6		metxmet 24060	. . . . . . 7 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐷 ∈ (∞Met‘𝑋))
7	5, 6	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐷 ∈ (∞Met‘𝑋))
8		iscmet3.2	. . . . . . 7 ⊢ 𝐽 = (MetOpen‘𝐷)
9	8	mopntopon 24165	. . . . . 6 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐽 ∈ (TopOn‘𝑋))
10	7, 9	syl 17	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
11		lmcl 23021	. . . . 5 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → 𝑥 ∈ 𝑋)
12	10, 11	sylan 578	. . . 4 ⊢ ((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → 𝑥 ∈ 𝑋)
13	7	adantr 479	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → 𝐷 ∈ (∞Met‘𝑋))
14	8	mopni2 24222	. . . . . . . 8 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑦 ∈ 𝐽 ∧ 𝑥 ∈ 𝑦) → ∃𝑟 ∈ ℝ⁺ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)
15	14	3expia 1119	. . . . . . 7 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑦 ∈ 𝐽) → (𝑥 ∈ 𝑦 → ∃𝑟 ∈ ℝ⁺ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦))
16	13, 15	sylan 578	. . . . . 6 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) → (𝑥 ∈ 𝑦 → ∃𝑟 ∈ ℝ⁺ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦))
17		iscmet3.7	. . . . . . . . 9 ⊢ (𝜑 → 𝐺 ∈ (Fil‘𝑋))
18	17	ad3antrrr 726	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)) → 𝐺 ∈ (Fil‘𝑋))
19		iscmet3.3	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑀 ∈ ℤ)
20	19	ad2antrr 722	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → 𝑀 ∈ ℤ)
21		rphalfcl 13005	. . . . . . . . . . . 12 ⊢ (𝑟 ∈ ℝ⁺ → (𝑟 / 2) ∈ ℝ⁺)
22	21	adantl 480	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → (𝑟 / 2) ∈ ℝ⁺)
23		iscmet3.1	. . . . . . . . . . . 12 ⊢ 𝑍 = (ℤ_≥‘𝑀)
24	23	iscmet3lem3 25038	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℤ ∧ (𝑟 / 2) ∈ ℝ⁺) → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)((1 / 2)↑𝑘) < (𝑟 / 2))
25	20, 22, 24	syl2anc 582	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)((1 / 2)↑𝑘) < (𝑟 / 2))
26	13	adantr 479	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → 𝐷 ∈ (∞Met‘𝑋))
27	12	adantr 479	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → 𝑥 ∈ 𝑋)
28		blcntr 24139	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ (𝑟 / 2) ∈ ℝ⁺) → 𝑥 ∈ (𝑥(ball‘𝐷)(𝑟 / 2)))
29	26, 27, 22, 28	syl3anc 1369	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → 𝑥 ∈ (𝑥(ball‘𝐷)(𝑟 / 2)))
30		simplr 765	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → 𝐹(⇝_𝑡‘𝐽)𝑥)
31	22	rpxrd 13021	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → (𝑟 / 2) ∈ ℝ^*)
32	8	blopn 24229	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ (𝑟 / 2) ∈ ℝ^*) → (𝑥(ball‘𝐷)(𝑟 / 2)) ∈ 𝐽)
33	26, 27, 31, 32	syl3anc 1369	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → (𝑥(ball‘𝐷)(𝑟 / 2)) ∈ 𝐽)
34	23, 29, 20, 30, 33	lmcvg 22986	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2)))
35	23	rexanuz2 15300	. . . . . . . . . . 11 ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))) ↔ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)((1 / 2)↑𝑘) < (𝑟 / 2) ∧ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))
36	23	r19.2uz 15302	. . . . . . . . . . . 12 ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))) → ∃𝑘 ∈ 𝑍 (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))
37	17	ad3antrrr 726	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → 𝐺 ∈ (Fil‘𝑋))
38		iscmet3.8	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑆:ℤ⟶𝐺)
39	38	ad3antrrr 726	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → 𝑆:ℤ⟶𝐺)
40		eluzelz 12836	. . . . . . . . . . . . . . . . 17 ⊢ (𝑘 ∈ (ℤ_≥‘𝑀) → 𝑘 ∈ ℤ)
41	40, 23	eleq2s 2849	. . . . . . . . . . . . . . . 16 ⊢ (𝑘 ∈ 𝑍 → 𝑘 ∈ ℤ)
42	41	ad2antrl 724	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → 𝑘 ∈ ℤ)
43		ffvelcdm 7082	. . . . . . . . . . . . . . 15 ⊢ ((𝑆:ℤ⟶𝐺 ∧ 𝑘 ∈ ℤ) → (𝑆‘𝑘) ∈ 𝐺)
44	39, 42, 43	syl2anc 582	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → (𝑆‘𝑘) ∈ 𝐺)
45		rpxr 12987	. . . . . . . . . . . . . . . . 17 ⊢ (𝑟 ∈ ℝ⁺ → 𝑟 ∈ ℝ^*)
46	45	adantl 480	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → 𝑟 ∈ ℝ^*)
47		blssm 24144	. . . . . . . . . . . . . . . 16 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑟 ∈ ℝ^*) → (𝑥(ball‘𝐷)𝑟) ⊆ 𝑋)
48	26, 27, 46, 47	syl3anc 1369	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → (𝑥(ball‘𝐷)𝑟) ⊆ 𝑋)
49	48	adantr 479	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → (𝑥(ball‘𝐷)𝑟) ⊆ 𝑋)
50	41	adantl 480	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → 𝑘 ∈ ℤ)
51		1rp 12982	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ 1 ∈ ℝ⁺
52		rphalfcl 13005	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (1 ∈ ℝ⁺ → (1 / 2) ∈ ℝ⁺)
53	51, 52	ax-mp 5	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (1 / 2) ∈ ℝ⁺
54		rpexpcl 14050	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((1 / 2) ∈ ℝ⁺ ∧ 𝑘 ∈ ℤ) → ((1 / 2)↑𝑘) ∈ ℝ⁺)
55	53, 54	mpan 686	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑘 ∈ ℤ → ((1 / 2)↑𝑘) ∈ ℝ⁺)
56	50, 55	syl 17	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → ((1 / 2)↑𝑘) ∈ ℝ⁺)
57	56	rpred 13020	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → ((1 / 2)↑𝑘) ∈ ℝ)
58	22	adantr 479	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (𝑟 / 2) ∈ ℝ⁺)
59	58	rpred 13020	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (𝑟 / 2) ∈ ℝ)
60		ltle 11306	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((1 / 2)↑𝑘) ∈ ℝ ∧ (𝑟 / 2) ∈ ℝ) → (((1 / 2)↑𝑘) < (𝑟 / 2) → ((1 / 2)↑𝑘) ≤ (𝑟 / 2)))
61	57, 59, 60	syl2anc 582	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (((1 / 2)↑𝑘) < (𝑟 / 2) → ((1 / 2)↑𝑘) ≤ (𝑟 / 2)))
62		fveq2 6890	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑛 = 𝑘 → (𝑆‘𝑛) = (𝑆‘𝑘))
63	62	eleq2d 2817	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑛 = 𝑘 → ((𝐹‘𝑘) ∈ (𝑆‘𝑛) ↔ (𝐹‘𝑘) ∈ (𝑆‘𝑘)))
64		iscmet3.10	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝜑 → ∀𝑘 ∈ 𝑍 ∀𝑛 ∈ (𝑀...𝑘)(𝐹‘𝑘) ∈ (𝑆‘𝑛))
65	64	r19.21bi 3246	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ∀𝑛 ∈ (𝑀...𝑘)(𝐹‘𝑘) ∈ (𝑆‘𝑛))
66		eluzfz2 13513	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝑘 ∈ (ℤ_≥‘𝑀) → 𝑘 ∈ (𝑀...𝑘))
67	66, 23	eleq2s 2849	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑘 ∈ 𝑍 → 𝑘 ∈ (𝑀...𝑘))
68	67	adantl 480	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝑘 ∈ (𝑀...𝑘))
69	63, 65, 68	rspcdva 3612	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ (𝑆‘𝑘))
70	69	adantr 479	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → (𝐹‘𝑘) ∈ (𝑆‘𝑘))
71		simpr 483	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → 𝑦 ∈ (𝑆‘𝑘))
72		iscmet3.9	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝜑 → ∀𝑘 ∈ ℤ ∀𝑢 ∈ (𝑆‘𝑘)∀𝑣 ∈ (𝑆‘𝑘)(𝑢𝐷𝑣) < ((1 / 2)↑𝑘))
73	72	ad2antrr 722	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → ∀𝑘 ∈ ℤ ∀𝑢 ∈ (𝑆‘𝑘)∀𝑣 ∈ (𝑆‘𝑘)(𝑢𝐷𝑣) < ((1 / 2)↑𝑘))
74	41	ad2antlr 723	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → 𝑘 ∈ ℤ)
75		rsp 3242	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (∀𝑘 ∈ ℤ ∀𝑢 ∈ (𝑆‘𝑘)∀𝑣 ∈ (𝑆‘𝑘)(𝑢𝐷𝑣) < ((1 / 2)↑𝑘) → (𝑘 ∈ ℤ → ∀𝑢 ∈ (𝑆‘𝑘)∀𝑣 ∈ (𝑆‘𝑘)(𝑢𝐷𝑣) < ((1 / 2)↑𝑘)))
76	73, 74, 75	sylc 65	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → ∀𝑢 ∈ (𝑆‘𝑘)∀𝑣 ∈ (𝑆‘𝑘)(𝑢𝐷𝑣) < ((1 / 2)↑𝑘))
77		oveq1 7418	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑢 = (𝐹‘𝑘) → (𝑢𝐷𝑣) = ((𝐹‘𝑘)𝐷𝑣))
78	77	breq1d 5157	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑢 = (𝐹‘𝑘) → ((𝑢𝐷𝑣) < ((1 / 2)↑𝑘) ↔ ((𝐹‘𝑘)𝐷𝑣) < ((1 / 2)↑𝑘)))
79		oveq2 7419	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑣 = 𝑦 → ((𝐹‘𝑘)𝐷𝑣) = ((𝐹‘𝑘)𝐷𝑦))
80	79	breq1d 5157	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑣 = 𝑦 → (((𝐹‘𝑘)𝐷𝑣) < ((1 / 2)↑𝑘) ↔ ((𝐹‘𝑘)𝐷𝑦) < ((1 / 2)↑𝑘)))
81	78, 80	rspc2va 3622	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((𝐹‘𝑘) ∈ (𝑆‘𝑘) ∧ 𝑦 ∈ (𝑆‘𝑘)) ∧ ∀𝑢 ∈ (𝑆‘𝑘)∀𝑣 ∈ (𝑆‘𝑘)(𝑢𝐷𝑣) < ((1 / 2)↑𝑘)) → ((𝐹‘𝑘)𝐷𝑦) < ((1 / 2)↑𝑘))
82	70, 71, 76, 81	syl21anc 834	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → ((𝐹‘𝑘)𝐷𝑦) < ((1 / 2)↑𝑘))
83	7	ad2antrr 722	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → 𝐷 ∈ (∞Met‘𝑋))
84	41, 55	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑘 ∈ 𝑍 → ((1 / 2)↑𝑘) ∈ ℝ⁺)
85	84	rpxrd 13021	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑘 ∈ 𝑍 → ((1 / 2)↑𝑘) ∈ ℝ^*)
86	85	ad2antlr 723	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → ((1 / 2)↑𝑘) ∈ ℝ^*)
87		iscmet3.6	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝜑 → 𝐹:𝑍⟶𝑋)
88	87	ffvelcdmda 7085	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ 𝑋)
89	88	adantr 479	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → (𝐹‘𝑘) ∈ 𝑋)
90	17	adantr 479	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐺 ∈ (Fil‘𝑋))
91	38, 41, 43	syl2an 594	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑆‘𝑘) ∈ 𝐺)
92		filelss 23576	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝐺 ∈ (Fil‘𝑋) ∧ (𝑆‘𝑘) ∈ 𝐺) → (𝑆‘𝑘) ⊆ 𝑋)
93	90, 91, 92	syl2anc 582	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑆‘𝑘) ⊆ 𝑋)
94	93	sselda 3981	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → 𝑦 ∈ 𝑋)
95		elbl2 24116	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ ((1 / 2)↑𝑘) ∈ ℝ^*) ∧ ((𝐹‘𝑘) ∈ 𝑋 ∧ 𝑦 ∈ 𝑋)) → (𝑦 ∈ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)) ↔ ((𝐹‘𝑘)𝐷𝑦) < ((1 / 2)↑𝑘)))
96	83, 86, 89, 94, 95	syl22anc 835	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → (𝑦 ∈ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)) ↔ ((𝐹‘𝑘)𝐷𝑦) < ((1 / 2)↑𝑘)))
97	82, 96	mpbird 256	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑦 ∈ (𝑆‘𝑘)) → 𝑦 ∈ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)))
98	97	ex 411	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑦 ∈ (𝑆‘𝑘) → 𝑦 ∈ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘))))
99	98	ssrdv 3987	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)))
100	99	ad4ant14 748	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)))
101	26	adantr 479	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → 𝐷 ∈ (∞Met‘𝑋))
102	87	ad2antrr 722	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → 𝐹:𝑍⟶𝑋)
103	102	ffvelcdmda 7085	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ 𝑋)
104	56	rpxrd 13021	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → ((1 / 2)↑𝑘) ∈ ℝ^*)
105	31	adantr 479	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (𝑟 / 2) ∈ ℝ^*)
106		ssbl 24149	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹‘𝑘) ∈ 𝑋) ∧ (((1 / 2)↑𝑘) ∈ ℝ^* ∧ (𝑟 / 2) ∈ ℝ^*) ∧ ((1 / 2)↑𝑘) ≤ (𝑟 / 2)) → ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)))
107	106	3expia 1119	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹‘𝑘) ∈ 𝑋) ∧ (((1 / 2)↑𝑘) ∈ ℝ^* ∧ (𝑟 / 2) ∈ ℝ^*)) → (((1 / 2)↑𝑘) ≤ (𝑟 / 2) → ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))))
108	101, 103, 104, 105, 107	syl22anc 835	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (((1 / 2)↑𝑘) ≤ (𝑟 / 2) → ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))))
109		sstr 3989	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)) ∧ ((𝐹‘𝑘)(ball‘𝐷)((1 / 2)↑𝑘)) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))) → (𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)))
110	100, 108, 109	syl6an 680	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (((1 / 2)↑𝑘) ≤ (𝑟 / 2) → (𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))))
111	61, 110	syld 47	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (((1 / 2)↑𝑘) < (𝑟 / 2) → (𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))))
112	111	adantrd 490	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → ((((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))) → (𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))))
113	112	impr 453	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → (𝑆‘𝑘) ⊆ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)))
114	27	adantr 479	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → 𝑥 ∈ 𝑋)
115		blcom 24120	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ (𝑟 / 2) ∈ ℝ^*) ∧ (𝑥 ∈ 𝑋 ∧ (𝐹‘𝑘) ∈ 𝑋)) → ((𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2)) ↔ 𝑥 ∈ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))))
116	101, 105, 114, 103, 115	syl22anc 835	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → ((𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2)) ↔ 𝑥 ∈ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2))))
117		rpre 12986	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑟 ∈ ℝ⁺ → 𝑟 ∈ ℝ)
118	117	ad2antlr 723	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → 𝑟 ∈ ℝ)
119		blhalf 24131	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹‘𝑘) ∈ 𝑋) ∧ (𝑟 ∈ ℝ ∧ 𝑥 ∈ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)))) → ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) ⊆ (𝑥(ball‘𝐷)𝑟))
120	119	expr 455	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹‘𝑘) ∈ 𝑋) ∧ 𝑟 ∈ ℝ) → (𝑥 ∈ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) → ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) ⊆ (𝑥(ball‘𝐷)𝑟)))
121	101, 103, 118, 120	syl21anc 834	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → (𝑥 ∈ ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) → ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) ⊆ (𝑥(ball‘𝐷)𝑟)))
122	116, 121	sylbid 239	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → ((𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2)) → ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) ⊆ (𝑥(ball‘𝐷)𝑟)))
123	122	adantld 489	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ 𝑘 ∈ 𝑍) → ((((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))) → ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) ⊆ (𝑥(ball‘𝐷)𝑟)))
124	123	impr 453	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → ((𝐹‘𝑘)(ball‘𝐷)(𝑟 / 2)) ⊆ (𝑥(ball‘𝐷)𝑟))
125	113, 124	sstrd 3991	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → (𝑆‘𝑘) ⊆ (𝑥(ball‘𝐷)𝑟))
126		filss 23577	. . . . . . . . . . . . . 14 ⊢ ((𝐺 ∈ (Fil‘𝑋) ∧ ((𝑆‘𝑘) ∈ 𝐺 ∧ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑋 ∧ (𝑆‘𝑘) ⊆ (𝑥(ball‘𝐷)𝑟))) → (𝑥(ball‘𝐷)𝑟) ∈ 𝐺)
127	37, 44, 49, 125, 126	syl13anc 1370	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) ∧ (𝑘 ∈ 𝑍 ∧ (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))))) → (𝑥(ball‘𝐷)𝑟) ∈ 𝐺)
128	127	rexlimdvaa 3154	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → (∃𝑘 ∈ 𝑍 (((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))) → (𝑥(ball‘𝐷)𝑟) ∈ 𝐺))
129	36, 128	syl5 34	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(((1 / 2)↑𝑘) < (𝑟 / 2) ∧ (𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))) → (𝑥(ball‘𝐷)𝑟) ∈ 𝐺))
130	35, 129	biimtrrid 242	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → ((∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)((1 / 2)↑𝑘) < (𝑟 / 2) ∧ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝐹‘𝑘) ∈ (𝑥(ball‘𝐷)(𝑟 / 2))) → (𝑥(ball‘𝐷)𝑟) ∈ 𝐺))
131	25, 34, 130	mp2and 695	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑟 ∈ ℝ⁺) → (𝑥(ball‘𝐷)𝑟) ∈ 𝐺)
132	131	ad2ant2r 743	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)) → (𝑥(ball‘𝐷)𝑟) ∈ 𝐺)
133	10	adantr 479	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → 𝐽 ∈ (TopOn‘𝑋))
134		toponss 22649	. . . . . . . . . 10 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑦 ∈ 𝐽) → 𝑦 ⊆ 𝑋)
135	133, 134	sylan 578	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) → 𝑦 ⊆ 𝑋)
136	135	adantr 479	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)) → 𝑦 ⊆ 𝑋)
137		simprr 769	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)) → (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)
138		filss 23577	. . . . . . . 8 ⊢ ((𝐺 ∈ (Fil‘𝑋) ∧ ((𝑥(ball‘𝐷)𝑟) ∈ 𝐺 ∧ 𝑦 ⊆ 𝑋 ∧ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)) → 𝑦 ∈ 𝐺)
139	18, 132, 136, 137, 138	syl13anc 1370	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦)) → 𝑦 ∈ 𝐺)
140	139	rexlimdvaa 3154	. . . . . 6 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) → (∃𝑟 ∈ ℝ⁺ (𝑥(ball‘𝐷)𝑟) ⊆ 𝑦 → 𝑦 ∈ 𝐺))
141	16, 140	syld 47	. . . . 5 ⊢ (((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) ∧ 𝑦 ∈ 𝐽) → (𝑥 ∈ 𝑦 → 𝑦 ∈ 𝐺))
142	141	ralrimiva 3144	. . . 4 ⊢ ((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → ∀𝑦 ∈ 𝐽 (𝑥 ∈ 𝑦 → 𝑦 ∈ 𝐺))
143		flimopn 23699	. . . . . 6 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐺 ∈ (Fil‘𝑋)) → (𝑥 ∈ (𝐽 fLim 𝐺) ↔ (𝑥 ∈ 𝑋 ∧ ∀𝑦 ∈ 𝐽 (𝑥 ∈ 𝑦 → 𝑦 ∈ 𝐺))))
144	10, 17, 143	syl2anc 582	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ (𝐽 fLim 𝐺) ↔ (𝑥 ∈ 𝑋 ∧ ∀𝑦 ∈ 𝐽 (𝑥 ∈ 𝑦 → 𝑦 ∈ 𝐺))))
145	144	adantr 479	. . . 4 ⊢ ((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → (𝑥 ∈ (𝐽 fLim 𝐺) ↔ (𝑥 ∈ 𝑋 ∧ ∀𝑦 ∈ 𝐽 (𝑥 ∈ 𝑦 → 𝑦 ∈ 𝐺))))
146	12, 142, 145	mpbir2and 709	. . 3 ⊢ ((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → 𝑥 ∈ (𝐽 fLim 𝐺))
147	146	ne0d 4334	. 2 ⊢ ((𝜑 ∧ 𝐹(⇝_𝑡‘𝐽)𝑥) → (𝐽 fLim 𝐺) ≠ ∅)
148	4, 147	exlimddv 1936	1 ⊢ (𝜑 → (𝐽 fLim 𝐺) ≠ ∅)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 = wceq 1539 ∃wex 1779 ∈ wcel 2104 ≠ wne 2938 ∀wral 3059 ∃wrex 3068 ⊆ wss 3947 ∅c0 4321 class class class wbr 5147 dom cdm 5675 ⟶wf 6538 ‘cfv 6542 (class class class)co 7411 ℝcr 11111 1c1 11113 ℝ^*cxr 11251 < clt 11252 ≤ cle 11253 / cdiv 11875 2c2 12271 ℤcz 12562 ℤ_≥cuz 12826 ℝ⁺crp 12978 ...cfz 13488 ↑cexp 14031 ∞Metcxmet 21129 Metcmet 21130 ballcbl 21131 MetOpencmopn 21134 TopOnctopon 22632 ⇝_𝑡clm 22950 Filcfil 23569 fLim cflim 23658

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 ax-pre-sup 11190

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 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-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-er 8705 df-map 8824 df-pm 8825 df-en 8942 df-dom 8943 df-sdom 8944 df-sup 9439 df-inf 9440 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-div 11876 df-nn 12217 df-2 12279 df-3 12280 df-n0 12477 df-z 12563 df-uz 12827 df-q 12937 df-rp 12979 df-xneg 13096 df-xadd 13097 df-xmul 13098 df-fz 13489 df-fl 13761 df-seq 13971 df-exp 14032 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-clim 15436 df-rlim 15437 df-topgen 17393 df-psmet 21136 df-xmet 21137 df-met 21138 df-bl 21139 df-mopn 21140 df-fbas 21141 df-top 22616 df-topon 22633 df-bases 22669 df-ntr 22744 df-nei 22822 df-lm 22953 df-fil 23570 df-flim 23663

This theorem is referenced by: iscmet3 25041

W3C validator