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Theorem iscfil3 25152

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 25146	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → 𝐹 ∈ (Fil‘𝑋))
2		cfil3i 25148	. . . . 5 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷) ∧ 𝑟 ∈ ℝ⁺) → ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)
3	2	3expa 1115	. . . 4 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) ∧ 𝑟 ∈ ℝ⁺) → ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)
4	3	ralrimiva 3140	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)
5	1, 4	jca 511	. 2 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹))
6		simprl 768	. . 3 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)) → 𝐹 ∈ (Fil‘𝑋))
7		rphalfcl 13004	. . . . . . . 8 ⊢ (𝑠 ∈ ℝ⁺ → (𝑠 / 2) ∈ ℝ⁺)
8	7	adantl 481	. . . . . . 7 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (Fil‘𝑋)) ∧ 𝑠 ∈ ℝ⁺) → (𝑠 / 2) ∈ ℝ⁺)
9		oveq2 7412	. . . . . . . . . 10 ⊢ (𝑟 = (𝑠 / 2) → (𝑥(ball‘𝐷)𝑟) = (𝑥(ball‘𝐷)(𝑠 / 2)))
10	9	eleq1d 2812	. . . . . . . . 9 ⊢ (𝑟 = (𝑠 / 2) → ((𝑥(ball‘𝐷)𝑟) ∈ 𝐹 ↔ (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹))
11	10	rexbidv 3172	. . . . . . . 8 ⊢ (𝑟 = (𝑠 / 2) → (∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹 ↔ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)(𝑠 / 2)) ∈ 𝐹))
12	11	rspcv 3602	. . . . . . 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 770	. . . . . . . 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 780	. . . . . . . . . . . 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 774	. . . . . . . . . . . 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 773	. . . . . . . . . . . . 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 13019	. . . . . . . . . . . 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 768	. . . . . . . . . . . 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 24262	. . . . . . . . . . . 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 836	. . . . . . . . . . 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 770	. . . . . . . . . . 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 3978	. . . . . . . . . 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 13020	. . . . . . . . . . 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 13020	. . . . . . . . . . . . 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 24275	. . . . . . . . . . . . 13 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ (𝑠 / 2) ∈ ℝ^*) → (𝑥(ball‘𝐷)(𝑠 / 2)) ⊆ 𝑋)
28	15, 16, 26, 27	syl3anc 1368	. . . . . . . . . . . 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 3978	. . . . . . . . . . 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 3978	. . . . . . . . . . 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 24247	. . . . . . . . . . 11 ⊢ (((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑠 ∈ ℝ^*) ∧ (𝑢 ∈ 𝑋 ∧ 𝑣 ∈ 𝑋)) → (𝑣 ∈ (𝑢(ball‘𝐷)𝑠) ↔ (𝑢𝐷𝑣) < 𝑠))
32	15, 24, 29, 30, 31	syl22anc 836	. . . . . . . . . 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 3194	. . . . . . . 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 3316	. . . . . . . . . 10 ⊢ (𝑦 = (𝑥(ball‘𝐷)(𝑠 / 2)) → (∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠 ↔ ∀𝑣 ∈ (𝑥(ball‘𝐷)(𝑠 / 2))(𝑢𝐷𝑣) < 𝑠))
36	35	raleqbi1dv 3327	. . . . . . . . 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 3606	. . . . . . . 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 583	. . . . . . 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 3150	. . . . . 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 3148	. . . 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 454	. . 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 25145	. . . 4 ⊢ (𝐷 ∈ (∞Met‘𝑋) → (𝐹 ∈ (CauFil‘𝐷) ↔ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑠 ∈ ℝ⁺ ∃𝑦 ∈ 𝐹 ∀𝑢 ∈ 𝑦 ∀𝑣 ∈ 𝑦 (𝑢𝐷𝑣) < 𝑠)))
44	43	adantr 480	. . 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 710	. 2 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑟 ∈ ℝ⁺ ∃𝑥 ∈ 𝑋 (𝑥(ball‘𝐷)𝑟) ∈ 𝐹)) → 𝐹 ∈ (CauFil‘𝐷))
46	5, 45	impbida 798	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 395 = wceq 1533 ∈ wcel 2098 ∀wral 3055 ∃wrex 3064 ⊆ wss 3943 class class class wbr 5141 ‘cfv 6536 (class class class)co 7404 ℝcr 11108 ℝ^*cxr 11248 < clt 11249 / cdiv 11872 2c2 12268 ℝ⁺crp 12977 ∞Metcxmet 21221 ballcbl 21223 Filcfil 23700 CauFilccfil 25131

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 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 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-id 5567 df-po 5581 df-so 5582 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-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-1st 7971 df-2nd 7972 df-er 8702 df-map 8821 df-en 8939 df-dom 8940 df-sdom 8941 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-div 11873 df-2 12276 df-rp 12978 df-xneg 13095 df-xadd 13096 df-xmul 13097 df-ico 13333 df-psmet 21228 df-xmet 21229 df-bl 21231 df-fbas 21233 df-fil 23701 df-cfil 25134

This theorem is referenced by: equivcfil 25178 flimcfil 25193

W3C validator