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Theorem cncfmet 24424

Description: Relate complex function continuity to metric space continuity. (Contributed by Paul Chapman, 26-Nov-2007.) (Revised by Mario Carneiro, 7-Sep-2015.)

**Hypotheses**
Ref	Expression
cncfmet.1	⊢ 𝐶 = ((abs ∘ − ) ↾ (𝐴 × 𝐴))
cncfmet.2	⊢ 𝐷 = ((abs ∘ − ) ↾ (𝐵 × 𝐵))
cncfmet.3	⊢ 𝐽 = (MetOpen‘𝐶)
cncfmet.4	⊢ 𝐾 = (MetOpen‘𝐷)

**Assertion**
Ref	Expression
cncfmet	⊢ ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → (𝐴–cn→𝐵) = (𝐽 Cn 𝐾))

Proof of Theorem cncfmet Dummy variables 𝑤 𝑓 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simplll 773	. . . . . . . . . . . 12 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → 𝐴 ⊆ ℂ)
2		simprl 769	. . . . . . . . . . . 12 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → 𝑥 ∈ 𝐴)
3		simprr 771	. . . . . . . . . . . 12 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → 𝑤 ∈ 𝐴)
4		cncfmet.1	. . . . . . . . . . . . . . . 16 ⊢ 𝐶 = ((abs ∘ − ) ↾ (𝐴 × 𝐴))
5	4	oveqi 7421	. . . . . . . . . . . . . . 15 ⊢ (𝑥𝐶𝑤) = (𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))𝑤)
6		ovres 7572	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) → (𝑥((abs ∘ − ) ↾ (𝐴 × 𝐴))𝑤) = (𝑥(abs ∘ − )𝑤))
7	5, 6	eqtrid 2784	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) → (𝑥𝐶𝑤) = (𝑥(abs ∘ − )𝑤))
8	7	ad2ant2l 744	. . . . . . . . . . . . 13 ⊢ (((𝐴 ⊆ ℂ ∧ 𝑥 ∈ 𝐴) ∧ (𝐴 ⊆ ℂ ∧ 𝑤 ∈ 𝐴)) → (𝑥𝐶𝑤) = (𝑥(abs ∘ − )𝑤))
9		ssel2 3977	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ⊆ ℂ ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℂ)
10		ssel2 3977	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ⊆ ℂ ∧ 𝑤 ∈ 𝐴) → 𝑤 ∈ ℂ)
11		eqid 2732	. . . . . . . . . . . . . . 15 ⊢ (abs ∘ − ) = (abs ∘ − )
12	11	cnmetdval 24286	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ ℂ ∧ 𝑤 ∈ ℂ) → (𝑥(abs ∘ − )𝑤) = (abs‘(𝑥 − 𝑤)))
13	9, 10, 12	syl2an 596	. . . . . . . . . . . . 13 ⊢ (((𝐴 ⊆ ℂ ∧ 𝑥 ∈ 𝐴) ∧ (𝐴 ⊆ ℂ ∧ 𝑤 ∈ 𝐴)) → (𝑥(abs ∘ − )𝑤) = (abs‘(𝑥 − 𝑤)))
14	8, 13	eqtrd 2772	. . . . . . . . . . . 12 ⊢ (((𝐴 ⊆ ℂ ∧ 𝑥 ∈ 𝐴) ∧ (𝐴 ⊆ ℂ ∧ 𝑤 ∈ 𝐴)) → (𝑥𝐶𝑤) = (abs‘(𝑥 − 𝑤)))
15	1, 2, 1, 3, 14	syl22anc 837	. . . . . . . . . . 11 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → (𝑥𝐶𝑤) = (abs‘(𝑥 − 𝑤)))
16	15	breq1d 5158	. . . . . . . . . 10 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → ((𝑥𝐶𝑤) < 𝑧 ↔ (abs‘(𝑥 − 𝑤)) < 𝑧))
17		ffvelcdm 7083	. . . . . . . . . . . . . 14 ⊢ ((𝑓:𝐴⟶𝐵 ∧ 𝑥 ∈ 𝐴) → (𝑓‘𝑥) ∈ 𝐵)
18	17	ad2ant2lr 746	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → (𝑓‘𝑥) ∈ 𝐵)
19		ffvelcdm 7083	. . . . . . . . . . . . . 14 ⊢ ((𝑓:𝐴⟶𝐵 ∧ 𝑤 ∈ 𝐴) → (𝑓‘𝑤) ∈ 𝐵)
20	19	ad2ant2l 744	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → (𝑓‘𝑤) ∈ 𝐵)
21		cncfmet.2	. . . . . . . . . . . . . . 15 ⊢ 𝐷 = ((abs ∘ − ) ↾ (𝐵 × 𝐵))
22	21	oveqi 7421	. . . . . . . . . . . . . 14 ⊢ ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) = ((𝑓‘𝑥)((abs ∘ − ) ↾ (𝐵 × 𝐵))(𝑓‘𝑤))
23		ovres 7572	. . . . . . . . . . . . . 14 ⊢ (((𝑓‘𝑥) ∈ 𝐵 ∧ (𝑓‘𝑤) ∈ 𝐵) → ((𝑓‘𝑥)((abs ∘ − ) ↾ (𝐵 × 𝐵))(𝑓‘𝑤)) = ((𝑓‘𝑥)(abs ∘ − )(𝑓‘𝑤)))
24	22, 23	eqtrid 2784	. . . . . . . . . . . . 13 ⊢ (((𝑓‘𝑥) ∈ 𝐵 ∧ (𝑓‘𝑤) ∈ 𝐵) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) = ((𝑓‘𝑥)(abs ∘ − )(𝑓‘𝑤)))
25	18, 20, 24	syl2anc 584	. . . . . . . . . . . 12 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) = ((𝑓‘𝑥)(abs ∘ − )(𝑓‘𝑤)))
26		simpllr 774	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → 𝐵 ⊆ ℂ)
27	26, 18	sseldd 3983	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → (𝑓‘𝑥) ∈ ℂ)
28	26, 20	sseldd 3983	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → (𝑓‘𝑤) ∈ ℂ)
29	11	cnmetdval 24286	. . . . . . . . . . . . 13 ⊢ (((𝑓‘𝑥) ∈ ℂ ∧ (𝑓‘𝑤) ∈ ℂ) → ((𝑓‘𝑥)(abs ∘ − )(𝑓‘𝑤)) = (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))))
30	27, 28, 29	syl2anc 584	. . . . . . . . . . . 12 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → ((𝑓‘𝑥)(abs ∘ − )(𝑓‘𝑤)) = (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))))
31	25, 30	eqtrd 2772	. . . . . . . . . . 11 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) = (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))))
32	31	breq1d 5158	. . . . . . . . . 10 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → (((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦 ↔ (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦))
33	16, 32	imbi12d 344	. . . . . . . . 9 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ (𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴)) → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦)))
34	33	anassrs 468	. . . . . . . 8 ⊢ (((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑤 ∈ 𝐴) → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦)))
35	34	ralbidva 3175	. . . . . . 7 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ 𝑥 ∈ 𝐴) → (∀𝑤 ∈ 𝐴 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦)))
36	35	rexbidv 3178	. . . . . 6 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ 𝑥 ∈ 𝐴) → (∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦)))
37	36	ralbidv 3177	. . . . 5 ⊢ ((((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦)))
38	37	ralbidva 3175	. . . 4 ⊢ (((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) ∧ 𝑓:𝐴⟶𝐵) → (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦)))
39	38	pm5.32da 579	. . 3 ⊢ ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → ((𝑓:𝐴⟶𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) ↔ (𝑓:𝐴⟶𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦))))
40		cnxmet 24288	. . . . . 6 ⊢ (abs ∘ − ) ∈ (∞Met‘ℂ)
41		xmetres2 23866	. . . . . 6 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝐴 ⊆ ℂ) → ((abs ∘ − ) ↾ (𝐴 × 𝐴)) ∈ (∞Met‘𝐴))
42	40, 41	mpan 688	. . . . 5 ⊢ (𝐴 ⊆ ℂ → ((abs ∘ − ) ↾ (𝐴 × 𝐴)) ∈ (∞Met‘𝐴))
43	4, 42	eqeltrid 2837	. . . 4 ⊢ (𝐴 ⊆ ℂ → 𝐶 ∈ (∞Met‘𝐴))
44		xmetres2 23866	. . . . . 6 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝐵 ⊆ ℂ) → ((abs ∘ − ) ↾ (𝐵 × 𝐵)) ∈ (∞Met‘𝐵))
45	40, 44	mpan 688	. . . . 5 ⊢ (𝐵 ⊆ ℂ → ((abs ∘ − ) ↾ (𝐵 × 𝐵)) ∈ (∞Met‘𝐵))
46	21, 45	eqeltrid 2837	. . . 4 ⊢ (𝐵 ⊆ ℂ → 𝐷 ∈ (∞Met‘𝐵))
47		cncfmet.3	. . . . 5 ⊢ 𝐽 = (MetOpen‘𝐶)
48		cncfmet.4	. . . . 5 ⊢ 𝐾 = (MetOpen‘𝐷)
49	47, 48	metcn 24051	. . . 4 ⊢ ((𝐶 ∈ (∞Met‘𝐴) ∧ 𝐷 ∈ (∞Met‘𝐵)) → (𝑓 ∈ (𝐽 Cn 𝐾) ↔ (𝑓:𝐴⟶𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))))
50	43, 46, 49	syl2an 596	. . 3 ⊢ ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → (𝑓 ∈ (𝐽 Cn 𝐾) ↔ (𝑓:𝐴⟶𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))))
51		elcncf 24404	. . 3 ⊢ ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → (𝑓 ∈ (𝐴–cn→𝐵) ↔ (𝑓:𝐴⟶𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ⁺ ∃𝑧 ∈ ℝ⁺ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝑓‘𝑥) − (𝑓‘𝑤))) < 𝑦))))
52	39, 50, 51	3bitr4rd 311	. 2 ⊢ ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → (𝑓 ∈ (𝐴–cn→𝐵) ↔ 𝑓 ∈ (𝐽 Cn 𝐾)))
53	52	eqrdv 2730	1 ⊢ ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → (𝐴–cn→𝐵) = (𝐽 Cn 𝐾))

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 × cxp 5674 ↾ cres 5678 ∘ ccom 5680 ⟶wf 6539 ‘cfv 6543 (class class class)co 7408 ℂcc 11107 < clt 11247 − cmin 11443 ℝ⁺crp 12973 abscabs 15180 ∞Metcxmet 20928 MetOpencmopn 20933 Cn ccn 22727 –cn→ccncf 24391

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 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-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-er 8702 df-map 8821 df-en 8939 df-dom 8940 df-sdom 8941 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-n0 12472 df-z 12558 df-uz 12822 df-q 12932 df-rp 12974 df-xneg 13091 df-xadd 13092 df-xmul 13093 df-seq 13966 df-exp 14027 df-cj 15045 df-re 15046 df-im 15047 df-sqrt 15181 df-abs 15182 df-topgen 17388 df-psmet 20935 df-xmet 20936 df-met 20937 df-bl 20938 df-mopn 20939 df-top 22395 df-topon 22412 df-bases 22448 df-cn 22730 df-cnp 22731 df-cncf 24393

This theorem is referenced by: cncfcn 24425 evthicc 24975 cncfres 36628

W3C validator