iccllysconn - Mathbox for Mario Carneiro

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Theorem iccllysconn 34913

Description: A closed interval is locally simply connected. (Contributed by Mario Carneiro, 10-Mar-2015.)

**Assertion**
Ref	Expression
iccllysconn	⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((topGen‘ran (,)) ↾_t (𝐴[,]𝐵)) ∈ Locally SConn)

Proof of Theorem iccllysconn Dummy variables 𝑎 𝑏 𝑢 𝑣 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simprl 769	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → 𝑥 ∈ (topGen‘ran (,)))
2		inss1 4224	. . . . . 6 ⊢ (𝑥 ∩ (𝐴[,]𝐵)) ⊆ 𝑥
3		simprr 771	. . . . . 6 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))
4	2, 3	sselid 3971	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → 𝑦 ∈ 𝑥)
5		tg2 22881	. . . . 5 ⊢ ((𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ 𝑥) → ∃𝑧 ∈ ran (,)(𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))
6	1, 4, 5	syl2anc 582	. . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → ∃𝑧 ∈ ran (,)(𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))
7		ioof 13451	. . . . . . . 8 ⊢ (,):(ℝ^* × ℝ^*)⟶𝒫 ℝ
8		ffn 6717	. . . . . . . 8 ⊢ ((,):(ℝ^* × ℝ^)⟶𝒫 ℝ → (,) Fn (ℝ^ × ℝ^*))
9		ovelrn 7591	. . . . . . . 8 ⊢ ((,) Fn (ℝ^* × ℝ^) → (𝑧 ∈ ran (,) ↔ ∃𝑎 ∈ ℝ^ ∃𝑏 ∈ ℝ^* 𝑧 = (𝑎(,)𝑏)))
10	7, 8, 9	mp2b 10	. . . . . . 7 ⊢ (𝑧 ∈ ran (,) ↔ ∃𝑎 ∈ ℝ^* ∃𝑏 ∈ ℝ^* 𝑧 = (𝑎(,)𝑏))
11		inss1 4224	. . . . . . . . . . . 12 ⊢ (𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑧
12		simprrr 780	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → 𝑧 ⊆ 𝑥)
13	11, 12	sstrid 3985	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → (𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥)
14		simprrl 779	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → 𝑦 ∈ 𝑧)
15		simprl 769	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → 𝑧 = (𝑎(,)𝑏))
16	15	ineq1d 4206	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → (𝑧 ∩ (𝐴[,]𝐵)) = ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)))
17	16	oveq2d 7429	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) = ((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))))
18		ioosconn 34910	. . . . . . . . . . . . . . . 16 ⊢ ((topGen‘ran (,)) ↾_t (𝑎(,)𝑏)) ∈ SConn
19		ioossre 13412	. . . . . . . . . . . . . . . . 17 ⊢ (𝑎(,)𝑏) ⊆ ℝ
20		eqid 2725	. . . . . . . . . . . . . . . . . . 19 ⊢ ((topGen‘ran (,)) ↾_t (𝑎(,)𝑏)) = ((topGen‘ran (,)) ↾_t (𝑎(,)𝑏))
21	20	resconn 34909	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑎(,)𝑏) ⊆ ℝ → (((topGen‘ran (,)) ↾_t (𝑎(,)𝑏)) ∈ SConn ↔ ((topGen‘ran (,)) ↾_t (𝑎(,)𝑏)) ∈ Conn))
22		reconn 24757	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑎(,)𝑏) ⊆ ℝ → (((topGen‘ran (,)) ↾_t (𝑎(,)𝑏)) ∈ Conn ↔ ∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏)))
23	21, 22	bitrd 278	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑎(,)𝑏) ⊆ ℝ → (((topGen‘ran (,)) ↾_t (𝑎(,)𝑏)) ∈ SConn ↔ ∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏)))
24	19, 23	ax-mp 5	. . . . . . . . . . . . . . . 16 ⊢ (((topGen‘ran (,)) ↾_t (𝑎(,)𝑏)) ∈ SConn ↔ ∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏))
25	18, 24	mpbi 229	. . . . . . . . . . . . . . 15 ⊢ ∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏)
26		inss1 4224	. . . . . . . . . . . . . . . 16 ⊢ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝑎(,)𝑏)
27		ssralv 4042	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝑎(,)𝑏) → (∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) → ∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏)))
28	27	ralimdv 3159	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝑎(,)𝑏) → (∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) → ∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏)))
29		ssralv 4042	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝑎(,)𝑏) → (∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏)))
30	28, 29	syld 47	. . . . . . . . . . . . . . . 16 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝑎(,)𝑏) → (∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏)))
31	26, 30	ax-mp 5	. . . . . . . . . . . . . . 15 ⊢ (∀𝑢 ∈ (𝑎(,)𝑏)∀𝑣 ∈ (𝑎(,)𝑏)(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏))
32	25, 31	mp1i 13	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏))
33		inss2 4225	. . . . . . . . . . . . . . 15 ⊢ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝐴[,]𝐵)
34		iccconn 24759	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((topGen‘ran (,)) ↾_t (𝐴[,]𝐵)) ∈ Conn)
35		iccssre 13433	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,]𝐵) ⊆ ℝ)
36		reconn 24757	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐴[,]𝐵) ⊆ ℝ → (((topGen‘ran (,)) ↾_t (𝐴[,]𝐵)) ∈ Conn ↔ ∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ (𝐴[,]𝐵)(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
37	35, 36	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (((topGen‘ran (,)) ↾_t (𝐴[,]𝐵)) ∈ Conn ↔ ∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ (𝐴[,]𝐵)(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
38	34, 37	mpbid 231	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ (𝐴[,]𝐵)(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵))
39	38	ad2antrr 724	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ (𝐴[,]𝐵)(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵))
40		ssralv 4042	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝐴[,]𝐵) → (∀𝑣 ∈ (𝐴[,]𝐵)(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵) → ∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
41	40	ralimdv 3159	. . . . . . . . . . . . . . . 16 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝐴[,]𝐵) → (∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ (𝐴[,]𝐵)(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵) → ∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
42		ssralv 4042	. . . . . . . . . . . . . . . 16 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝐴[,]𝐵) → (∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
43	41, 42	syld 47	. . . . . . . . . . . . . . 15 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ (𝐴[,]𝐵) → (∀𝑢 ∈ (𝐴[,]𝐵)∀𝑣 ∈ (𝐴[,]𝐵)(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
44	33, 39, 43	mpsyl 68	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵))
45		ssin 4226	. . . . . . . . . . . . . . . 16 ⊢ (((𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) ∧ (𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)) ↔ (𝑢[,]𝑣) ⊆ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)))
46	45	2ralbii 3118	. . . . . . . . . . . . . . 15 ⊢ (∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))((𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) ∧ (𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)) ↔ ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)))
47		r19.26-2 3128	. . . . . . . . . . . . . . 15 ⊢ (∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))((𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) ∧ (𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)) ↔ (∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) ∧ ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
48	46, 47	bitr3i 276	. . . . . . . . . . . . . 14 ⊢ (∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ↔ (∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝑎(,)𝑏) ∧ ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ (𝐴[,]𝐵)))
49	32, 44, 48	sylanbrc 581	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)))
50	26, 19	sstri 3983	. . . . . . . . . . . . . 14 ⊢ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ ℝ
51		eqid 2725	. . . . . . . . . . . . . . . 16 ⊢ ((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))) = ((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)))
52	51	resconn 34909	. . . . . . . . . . . . . . 15 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ ℝ → (((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))) ∈ SConn ↔ ((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))) ∈ Conn))
53		reconn 24757	. . . . . . . . . . . . . . 15 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ ℝ → (((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))) ∈ Conn ↔ ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))))
54	52, 53	bitrd 278	. . . . . . . . . . . . . 14 ⊢ (((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)) ⊆ ℝ → (((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))) ∈ SConn ↔ ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))))
55	50, 54	ax-mp 5	. . . . . . . . . . . . 13 ⊢ (((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))) ∈ SConn ↔ ∀𝑢 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))∀𝑣 ∈ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))(𝑢[,]𝑣) ⊆ ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵)))
56	49, 55	sylibr 233	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ((topGen‘ran (,)) ↾_t ((𝑎(,)𝑏) ∩ (𝐴[,]𝐵))) ∈ SConn)
57	17, 56	eqeltrd 2825	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn)
58	13, 14, 57	3jca 1125	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) ∧ (𝑧 = (𝑎(,)𝑏) ∧ (𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥))) → ((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))
59	58	exp32 419	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → (𝑧 = (𝑎(,)𝑏) → ((𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥) → ((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))))
60	59	rexlimdvw 3150	. . . . . . . 8 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → (∃𝑏 ∈ ℝ^* 𝑧 = (𝑎(,)𝑏) → ((𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥) → ((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))))
61	60	rexlimdvw 3150	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → (∃𝑎 ∈ ℝ^* ∃𝑏 ∈ ℝ^* 𝑧 = (𝑎(,)𝑏) → ((𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥) → ((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))))
62	10, 61	biimtrid 241	. . . . . 6 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → (𝑧 ∈ ran (,) → ((𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥) → ((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))))
63	62	reximdvai 3155	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → (∃𝑧 ∈ ran (,)(𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥) → ∃𝑧 ∈ ran (,)((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn)))
64		retopbas 24690	. . . . . 6 ⊢ ran (,) ∈ TopBases
65		bastg 22882	. . . . . 6 ⊢ (ran (,) ∈ TopBases → ran (,) ⊆ (topGen‘ran (,)))
66		ssrexv 4043	. . . . . 6 ⊢ (ran (,) ⊆ (topGen‘ran (,)) → (∃𝑧 ∈ ran (,)((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn) → ∃𝑧 ∈ (topGen‘ran (,))((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn)))
67	64, 65, 66	mp2b 10	. . . . 5 ⊢ (∃𝑧 ∈ ran (,)((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn) → ∃𝑧 ∈ (topGen‘ran (,))((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))
68	63, 67	syl6 35	. . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → (∃𝑧 ∈ ran (,)(𝑦 ∈ 𝑧 ∧ 𝑧 ⊆ 𝑥) → ∃𝑧 ∈ (topGen‘ran (,))((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn)))
69	6, 68	mpd 15	. . 3 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝑥 ∈ (topGen‘ran (,)) ∧ 𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵)))) → ∃𝑧 ∈ (topGen‘ran (,))((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))
70	69	ralrimivva 3191	. 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ∀𝑥 ∈ (topGen‘ran (,))∀𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵))∃𝑧 ∈ (topGen‘ran (,))((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))
71		retop 24691	. . 3 ⊢ (topGen‘ran (,)) ∈ Top
72		ovex 7446	. . 3 ⊢ (𝐴[,]𝐵) ∈ V
73		subislly 23398	. . 3 ⊢ (((topGen‘ran (,)) ∈ Top ∧ (𝐴[,]𝐵) ∈ V) → (((topGen‘ran (,)) ↾_t (𝐴[,]𝐵)) ∈ Locally SConn ↔ ∀𝑥 ∈ (topGen‘ran (,))∀𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵))∃𝑧 ∈ (topGen‘ran (,))((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn)))
74	71, 72, 73	mp2an 690	. 2 ⊢ (((topGen‘ran (,)) ↾_t (𝐴[,]𝐵)) ∈ Locally SConn ↔ ∀𝑥 ∈ (topGen‘ran (,))∀𝑦 ∈ (𝑥 ∩ (𝐴[,]𝐵))∃𝑧 ∈ (topGen‘ran (,))((𝑧 ∩ (𝐴[,]𝐵)) ⊆ 𝑥 ∧ 𝑦 ∈ 𝑧 ∧ ((topGen‘ran (,)) ↾_t (𝑧 ∩ (𝐴[,]𝐵))) ∈ SConn))
75	70, 74	sylibr 233	1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((topGen‘ran (,)) ↾_t (𝐴[,]𝐵)) ∈ Locally SConn)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ∀wral 3051 ∃wrex 3060 Vcvv 3463 ∩ cin 3940 ⊆ wss 3941 𝒫 cpw 4599 × cxp 5671 ran crn 5674 Fn wfn 6538 ⟶wf 6539 ‘cfv 6543 (class class class)co 7413 ℝcr 11132 ℝ^*cxr 11272 (,)cioo 13351 [,]cicc 13354 ↾_t crest 17396 topGenctg 17413 Topctop 22808 TopBasesctb 22861 Conncconn 23328 Locally clly 23381 SConncsconn 34883

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 2166 ax-ext 2696 ax-rep 5281 ax-sep 5295 ax-nul 5302 ax-pow 5360 ax-pr 5424 ax-un 7735 ax-cnex 11189 ax-resscn 11190 ax-1cn 11191 ax-icn 11192 ax-addcl 11193 ax-addrcl 11194 ax-mulcl 11195 ax-mulrcl 11196 ax-mulcom 11197 ax-addass 11198 ax-mulass 11199 ax-distr 11200 ax-i2m1 11201 ax-1ne0 11202 ax-1rid 11203 ax-rnegex 11204 ax-rrecex 11205 ax-cnre 11206 ax-pre-lttri 11207 ax-pre-lttrn 11208 ax-pre-ltadd 11209 ax-pre-mulgt0 11210 ax-pre-sup 11211 ax-addf 11212

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 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 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3771 df-csb 3887 df-dif 3944 df-un 3946 df-in 3948 df-ss 3958 df-pss 3961 df-nul 4320 df-if 4526 df-pw 4601 df-sn 4626 df-pr 4628 df-tp 4630 df-op 4632 df-uni 4905 df-int 4946 df-iun 4994 df-iin 4995 df-br 5145 df-opab 5207 df-mpt 5228 df-tr 5262 df-id 5571 df-eprel 5577 df-po 5585 df-so 5586 df-fr 5628 df-se 5629 df-we 5630 df-xp 5679 df-rel 5680 df-cnv 5681 df-co 5682 df-dm 5683 df-rn 5684 df-res 5685 df-ima 5686 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 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-isom 6552 df-riota 7369 df-ov 7416 df-oprab 7417 df-mpo 7418 df-of 7679 df-om 7866 df-1st 7987 df-2nd 7988 df-supp 8159 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-er 8718 df-map 8840 df-ixp 8910 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-fsupp 9381 df-fi 9429 df-sup 9460 df-inf 9461 df-oi 9528 df-card 9957 df-pnf 11275 df-mnf 11276 df-xr 11277 df-ltxr 11278 df-le 11279 df-sub 11471 df-neg 11472 df-div 11897 df-nn 12238 df-2 12300 df-3 12301 df-4 12302 df-5 12303 df-6 12304 df-7 12305 df-8 12306 df-9 12307 df-n0 12498 df-z 12584 df-dec 12703 df-uz 12848 df-q 12958 df-rp 13002 df-xneg 13119 df-xadd 13120 df-xmul 13121 df-ioo 13355 df-ico 13357 df-icc 13358 df-fz 13512 df-fzo 13655 df-seq 13994 df-exp 14054 df-hash 14317 df-cj 15073 df-re 15074 df-im 15075 df-sqrt 15209 df-abs 15210 df-struct 17110 df-sets 17127 df-slot 17145 df-ndx 17157 df-base 17175 df-ress 17204 df-plusg 17240 df-mulr 17241 df-starv 17242 df-sca 17243 df-vsca 17244 df-ip 17245 df-tset 17246 df-ple 17247 df-ds 17249 df-unif 17250 df-hom 17251 df-cco 17252 df-rest 17398 df-topn 17399 df-0g 17417 df-gsum 17418 df-topgen 17419 df-pt 17420 df-prds 17423 df-xrs 17478 df-qtop 17483 df-imas 17484 df-xps 17486 df-mre 17560 df-mrc 17561 df-acs 17563 df-mgm 18594 df-sgrp 18673 df-mnd 18689 df-submnd 18735 df-mulg 19023 df-cntz 19267 df-cmn 19736 df-psmet 21270 df-xmet 21271 df-met 21272 df-bl 21273 df-mopn 21274 df-cnfld 21279 df-top 22809 df-topon 22826 df-topsp 22848 df-bases 22862 df-cld 22936 df-cn 23144 df-cnp 23145 df-conn 23329 df-lly 23383 df-tx 23479 df-hmeo 23672 df-xms 24239 df-ms 24240 df-tms 24241 df-ii 24810 df-cncf 24811 df-htpy 24909 df-phtpy 24910 df-phtpc 24931 df-pconn 34884 df-sconn 34885

This theorem is referenced by: iillysconn 34916

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