iscfil3 - Metamath Proof Explorer

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Theorem iscfil3 24789

Description: A filter is Cauchy iff it contains a ball of any chosen size. (Contributed by Mario Carneiro, 15-Oct-2015.)

**Assertion**
Ref	Expression
iscfil3	⊢ (𝐷 ∈ (∞Met‘𝑋) → (𝐹 ∈ (CauFil‘𝐷) ↔ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)))

Distinct variable groups: 𝑥,𝑟,𝐹 𝑋,𝑟,𝑥 𝐷,𝑟,𝑥

Proof of Theorem iscfil3 Dummy variables 𝑢 𝑠 𝑣 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cfilfil 24783	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → 𝐹 ∈ (Fil‘𝑋))
2		cfil3i 24785	. . . . 5 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷) ∧ 𝑟 ∈ ℝ⁺) → ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)
3	2	3expa 1118	. . . 4 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) ∧ 𝑟 ∈ ℝ⁺) → ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)
4	3	ralrimiva 3146	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)
5	1, 4	jca 512	. 2 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹))
6		simprl 769	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)) → 𝐹 ∈ (Fil‘𝑋))
7		rphalfcl 13000	. . . . . . . 8 ⊢ (𝑠 ∈ ℝ⁺ → (𝑠 / 2) ∈ ℝ⁺)
8	7	adantl 482	. . . . . . 7 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) → (𝑠 / 2) ∈ ℝ⁺)
9		oveq2 7416	. . . . . . . . . 10 ⊢ (𝑟 = (𝑠 / 2) → (𝑥(ball‘𝐷)𝑟) = (𝑥(ball‘𝐷)(𝑠 / 2)))
10	9	eleq1d 2818	. . . . . . . . 9 ⊢ (𝑟 = (𝑠 / 2) → ((𝑥(ball‘𝐷)𝑟) ∈ 𝐹 ↔ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹))
11	10	rexbidv 3178	. . . . . . . 8 ⊢ (𝑟 = (𝑠 / 2) → (∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹 ↔ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹))
12	11	rspcv 3608	. . . . . . 7 ⊢ ((𝑠 / 2) ∈ ℝ⁺ → (∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹 → ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹))
13	8, 12	syl 17	. . . . . 6 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) → (∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹 → ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹))
14		simprr 771	. . . . . . . 8 ⊢ ((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) → (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)
15		simp-4l 781	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝐷 ∈ (∞Met‘𝑋))
16		simplrl 775	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑥 ∈ 𝑋)
17		simpllr 774	. . . . . . . . . . . . 13 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑠 ∈ ℝ⁺)
18	17	rpred 13015	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑠 ∈ ℝ)
19		simprl 769	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))
20		blhalf 23910	. . . . . . . . . . . 12 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋) ∧ (𝑠 ∈ ℝ ∧ 𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → (𝑥(ball‘𝐷)(𝑠 / 2)) ⊆ (𝑢(ball‘𝐷)𝑠))
21	15, 16, 18, 19, 20	syl22anc 837	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → (𝑥(ball‘𝐷)(𝑠 / 2)) ⊆ (𝑢(ball‘𝐷)𝑠))
22		simprr 771	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))
23	21, 22	sseldd 3983	. . . . . . . . . 10 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑣 ∈ (𝑢(ball‘𝐷)𝑠))
24	17	rpxrd 13016	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑠 ∈ ℝ^*)
25	17, 7	syl 17	. . . . . . . . . . . . . 14 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → (𝑠 / 2) ∈ ℝ⁺)
26	25	rpxrd 13016	. . . . . . . . . . . . 13 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → (𝑠 / 2) ∈ ℝ^*)
27		blssm 23923	. . . . . . . . . . . . 13 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ (𝑠 / 2) ∈ ℝ^*) → (𝑥(ball‘𝐷)(𝑠 / 2)) ⊆ 𝑋)
28	15, 16, 26, 27	syl3anc 1371	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → (𝑥(ball‘𝐷)(𝑠 / 2)) ⊆ 𝑋)
29	28, 19	sseldd 3983	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑢 ∈ 𝑋)
30	28, 22	sseldd 3983	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → 𝑣 ∈ 𝑋)
31		elbl2 23895	. . . . . . . . . . 11 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑠 ∈ ℝ^*) ∧ (𝑢 ∈ 𝑋 ∧ 𝑣 ∈ 𝑋)) → (𝑣 ∈ (𝑢(ball‘𝐷)𝑠) ↔ (𝑢𝐷𝑣) < 𝑠))
32	15, 24, 29, 30, 31	syl22anc 837	. . . . . . . . . 10 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → (𝑣 ∈ (𝑢(ball‘𝐷)𝑠) ↔ (𝑢𝐷𝑣) < 𝑠))
33	23, 32	mpbid 231	. . . . . . . . 9 ⊢ (((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) ∧ (𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)) ∧ 𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2)))) → (𝑢𝐷𝑣) < 𝑠)
34	33	ralrimivva 3200	. . . . . . . 8 ⊢ ((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) → ∀𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))∀𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))(𝑢𝐷𝑣) < 𝑠)
35		raleq 3322	. . . . . . . . . 10 ⊢ (𝑦 = (𝑥(ball‘𝐷)(𝑠 / 2)) → (∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠 ↔ ∀𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))(𝑢𝐷𝑣) < 𝑠))
36	35	raleqbi1dv 3333	. . . . . . . . 9 ⊢ (𝑦 = (𝑥(ball‘𝐷)(𝑠 / 2)) → (∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠 ↔ ∀𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))∀𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))(𝑢𝐷𝑣) < 𝑠))
37	36	rspcev 3612	. . . . . . . 8 ⊢ (((𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹 ∧ ∀𝑢 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))∀𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))(𝑢𝐷𝑣) < 𝑠) → ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠)
38	14, 34, 37	syl2anc 584	. . . . . . 7 ⊢ ((((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) ∧ (𝑥 ∈ 𝑋 ∧ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹)) → ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠)
39	38	rexlimdvaa 3156	. . . . . 6 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) → (∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹 → ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠))
40	13, 39	syld 47	. . . . 5 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) → (∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹 → ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠))
41	40	ralrimdva 3154	. . . 4 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) → (∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹 → ∀𝑠 ∈ ℝ⁺ ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠))
42	41	impr 455	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)) → ∀𝑠 ∈ ℝ⁺ ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠)
43		iscfil2 24782	. . . 4 ⊢ (𝐷 ∈ (∞Met‘𝑋) → (𝐹 ∈ (CauFil‘𝐷) ↔ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑠 ∈ ℝ⁺ ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠)))
44	43	adantr 481	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)) → (𝐹 ∈ (CauFil‘𝐷) ↔ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑠 ∈ ℝ⁺ ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠)))
45	6, 42, 44	mpbir2and 711	. 2 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)) → 𝐹 ∈ (CauFil‘𝐷))
46	5, 45	impbida 799	1 ⊢ (𝐷 ∈ (∞Met‘𝑋) → (𝐹 ∈ (CauFil‘𝐷) ↔ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ∀wral 3061 ∃wrex 3070 ⊆ wss 3948 class class class wbr 5148 ‘cfv 6543 (class class class)co 7408 ℝcr 11108 ℝ^*cxr 11246 < clt 11247 / cdiv 11870 2c2 12266 ℝ⁺crp 12973 ∞Metcxmet 20928 ballcbl 20930 Filcfil 23348 CauFilccfil 24768

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-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

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-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5574 df-po 5588 df-so 5589 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-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-1st 7974 df-2nd 7975 df-er 8702 df-map 8821 df-en 8939 df-dom 8940 df-sdom 8941 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-2 12274 df-rp 12974 df-xneg 13091 df-xadd 13092 df-xmul 13093 df-ico 13329 df-psmet 20935 df-xmet 20936 df-bl 20938 df-fbas 20940 df-fil 23349 df-cfil 24771

This theorem is referenced by: equivcfil 24815 flimcfil 24830

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