Theorem ressprdsds 21986

Description: Restriction of a product metric. (Contributed by Mario Carneiro, 16-Sep-2015.)

Hypotheses

Ref	Expression
ressprdsds.y	⊢ (𝜑 → 𝑌 = (𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))
ressprdsds.h	⊢ (𝜑 → 𝐻 = (𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))
ressprdsds.b	⊢ 𝐵 = (Base‘𝐻)
ressprdsds.d	⊢ 𝐷 = (dist‘𝑌)
ressprdsds.e	⊢ 𝐸 = (dist‘𝐻)
ressprdsds.s	⊢ (𝜑 → 𝑆 ∈ 𝑈)
ressprdsds.t	⊢ (𝜑 → 𝑇 ∈ 𝑉)
ressprdsds.i	⊢ (𝜑 → 𝐼 ∈ 𝑊)
ressprdsds.r	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝑅 ∈ 𝑋)
ressprdsds.a	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝐴 ∈ 𝑍)

Assertion

Ref	Expression
ressprdsds	⊢ (𝜑 → 𝐸 = (𝐷 ↾ (𝐵 × 𝐵)))

Distinct variable groups:   𝑥,𝐼   𝜑,𝑥

Allowed substitution hints:   𝐴(𝑥)   𝐵(𝑥)   𝐷(𝑥)   𝑅(𝑥)   𝑆(𝑥)   𝑇(𝑥)   𝑈(𝑥)   𝐸(𝑥)   𝐻(𝑥)   𝑉(𝑥)   𝑊(𝑥)   𝑋(𝑥)   𝑌(𝑥)   𝑍(𝑥)

Proof of Theorem ressprdsds

Dummy variables 𝑓 𝑔 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ovres 6698	. . . . 5 ⊢ ((𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → (𝑓(𝐷 ↾ (𝐵 × 𝐵))𝑔) = (𝑓𝐷𝑔))
2	1	adantl 481	. . . 4 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓(𝐷 ↾ (𝐵 × 𝐵))𝑔) = (𝑓𝐷𝑔))
3		ressprdsds.a	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝐴 ∈ 𝑍)
4		eqid 2610	. . . . . . . . . . . . . 14 ⊢ (𝑅 ↾s 𝐴) = (𝑅 ↾s 𝐴)
5		eqid 2610	. . . . . . . . . . . . . 14 ⊢ (dist‘𝑅) = (dist‘𝑅)
6	4, 5	ressds 15896	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ 𝑍 → (dist‘𝑅) = (dist‘(𝑅 ↾s 𝐴)))
7	3, 6	syl 17	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (dist‘𝑅) = (dist‘(𝑅 ↾s 𝐴)))
8	7	oveqd 6566	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → ((𝑓‘𝑥)(dist‘𝑅)(𝑔‘𝑥)) = ((𝑓‘𝑥)(dist‘(𝑅 ↾s 𝐴))(𝑔‘𝑥)))
9	8	mpteq2dva 4672	. . . . . . . . . 10 ⊢ (𝜑 → (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘𝑅)(𝑔‘𝑥))) = (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘(𝑅 ↾s 𝐴))(𝑔‘𝑥))))
10	9	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘𝑅)(𝑔‘𝑥))) = (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘(𝑅 ↾s 𝐴))(𝑔‘𝑥))))
11	10	rneqd 5274	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘𝑅)(𝑔‘𝑥))) = ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘(𝑅 ↾s 𝐴))(𝑔‘𝑥))))
12	11	uneq1d 3728	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘𝑅)(𝑔‘𝑥))) ∪ {0}) = (ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘(𝑅 ↾s 𝐴))(𝑔‘𝑥))) ∪ {0}))
13	12	supeq1d 8235	. . . . . 6 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → sup((ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘𝑅)(𝑔‘𝑥))) ∪ {0}), ℝ*, < ) = sup((ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘(𝑅 ↾s 𝐴))(𝑔‘𝑥))) ∪ {0}), ℝ*, < ))
14		eqid 2610	. . . . . . 7 ⊢ (𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)) = (𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))
15		eqid 2610	. . . . . . 7 ⊢ (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) = (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))
16		ressprdsds.s	. . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ 𝑈)
17	16	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑆 ∈ 𝑈)
18		ressprdsds.i	. . . . . . . 8 ⊢ (𝜑 → 𝐼 ∈ 𝑊)
19	18	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝐼 ∈ 𝑊)
20		ressprdsds.r	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝑅 ∈ 𝑋)
21	20	ralrimiva 2949	. . . . . . . 8 ⊢ (𝜑 → ∀𝑥 ∈ 𝐼 𝑅 ∈ 𝑋)
22	21	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → ∀𝑥 ∈ 𝐼 𝑅 ∈ 𝑋)
23		eqid 2610	. . . . . . . . . . . . . . . 16 ⊢ (Base‘𝑅) = (Base‘𝑅)
24	4, 23	ressbasss 15759	. . . . . . . . . . . . . . 15 ⊢ (Base‘(𝑅 ↾s 𝐴)) ⊆ (Base‘𝑅)
25	24	a1i 11	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (Base‘(𝑅 ↾s 𝐴)) ⊆ (Base‘𝑅))
26	25	ralrimiva 2949	. . . . . . . . . . . . 13 ⊢ (𝜑 → ∀𝑥 ∈ 𝐼 (Base‘(𝑅 ↾s 𝐴)) ⊆ (Base‘𝑅))
27		ss2ixp 7807	. . . . . . . . . . . . 13 ⊢ (∀𝑥 ∈ 𝐼 (Base‘(𝑅 ↾s 𝐴)) ⊆ (Base‘𝑅) → X𝑥 ∈ 𝐼 (Base‘(𝑅 ↾s 𝐴)) ⊆ X𝑥 ∈ 𝐼 (Base‘𝑅))
28	26, 27	syl 17	. . . . . . . . . . . 12 ⊢ (𝜑 → X𝑥 ∈ 𝐼 (Base‘(𝑅 ↾s 𝐴)) ⊆ X𝑥 ∈ 𝐼 (Base‘𝑅))
29		eqid 2610	. . . . . . . . . . . . 13 ⊢ (𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))) = (𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))
30		eqid 2610	. . . . . . . . . . . . 13 ⊢ (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) = (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))
31		ressprdsds.t	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑇 ∈ 𝑉)
32		ovex 6577	. . . . . . . . . . . . . . 15 ⊢ (𝑅 ↾s 𝐴) ∈ V
33	32	rgenw 2908	. . . . . . . . . . . . . 14 ⊢ ∀𝑥 ∈ 𝐼 (𝑅 ↾s 𝐴) ∈ V
34	33	a1i 11	. . . . . . . . . . . . 13 ⊢ (𝜑 → ∀𝑥 ∈ 𝐼 (𝑅 ↾s 𝐴) ∈ V)
35		eqid 2610	. . . . . . . . . . . . 13 ⊢ (Base‘(𝑅 ↾s 𝐴)) = (Base‘(𝑅 ↾s 𝐴))
36	29, 30, 31, 18, 34, 35	prdsbas3 15964	. . . . . . . . . . . 12 ⊢ (𝜑 → (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) = X𝑥 ∈ 𝐼 (Base‘(𝑅 ↾s 𝐴)))
37	14, 15, 16, 18, 21, 23	prdsbas3 15964	. . . . . . . . . . . 12 ⊢ (𝜑 → (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) = X𝑥 ∈ 𝐼 (Base‘𝑅))
38	28, 36, 37	3sstr4d 3611	. . . . . . . . . . 11 ⊢ (𝜑 → (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) ⊆ (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
39		ressprdsds.b	. . . . . . . . . . . 12 ⊢ 𝐵 = (Base‘𝐻)
40		ressprdsds.h	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐻 = (𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))
41	40	fveq2d 6107	. . . . . . . . . . . 12 ⊢ (𝜑 → (Base‘𝐻) = (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))
42	39, 41	syl5eq 2656	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐵 = (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))
43		ressprdsds.y	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑌 = (𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))
44	43	fveq2d 6107	. . . . . . . . . . 11 ⊢ (𝜑 → (Base‘𝑌) = (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
45	38, 42, 44	3sstr4d 3611	. . . . . . . . . 10 ⊢ (𝜑 → 𝐵 ⊆ (Base‘𝑌))
46	45	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝐵 ⊆ (Base‘𝑌))
47	44	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (Base‘𝑌) = (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
48	46, 47	sseqtrd 3604	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝐵 ⊆ (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
49		simprl 790	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑓 ∈ 𝐵)
50	48, 49	sseldd 3569	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑓 ∈ (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
51		simprr 792	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑔 ∈ 𝐵)
52	48, 51	sseldd 3569	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑔 ∈ (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
53		eqid 2610	. . . . . . 7 ⊢ (dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) = (dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))
54	14, 15, 17, 19, 22, 50, 52, 5, 53	prdsdsval2 15967	. . . . . 6 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓(dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))𝑔) = sup((ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘𝑅)(𝑔‘𝑥))) ∪ {0}), ℝ*, < ))
55	31	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑇 ∈ 𝑉)
56	33	a1i 11	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → ∀𝑥 ∈ 𝐼 (𝑅 ↾s 𝐴) ∈ V)
57	42	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝐵 = (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))
58	49, 57	eleqtrd 2690	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑓 ∈ (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))
59	51, 57	eleqtrd 2690	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → 𝑔 ∈ (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))
60		eqid 2610	. . . . . . 7 ⊢ (dist‘(𝑅 ↾s 𝐴)) = (dist‘(𝑅 ↾s 𝐴))
61		eqid 2610	. . . . . . 7 ⊢ (dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) = (dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))
62	29, 30, 55, 19, 56, 58, 59, 60, 61	prdsdsval2 15967	. . . . . 6 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓(dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))𝑔) = sup((ran (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(dist‘(𝑅 ↾s 𝐴))(𝑔‘𝑥))) ∪ {0}), ℝ*, < ))
63	13, 54, 62	3eqtr4d 2654	. . . . 5 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓(dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))𝑔) = (𝑓(dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))𝑔))
64		ressprdsds.d	. . . . . . 7 ⊢ 𝐷 = (dist‘𝑌)
65	43	fveq2d 6107	. . . . . . 7 ⊢ (𝜑 → (dist‘𝑌) = (dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
66	64, 65	syl5eq 2656	. . . . . 6 ⊢ (𝜑 → 𝐷 = (dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))
67	66	oveqdr 6573	. . . . 5 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓𝐷𝑔) = (𝑓(dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))𝑔))
68		ressprdsds.e	. . . . . . 7 ⊢ 𝐸 = (dist‘𝐻)
69	40	fveq2d 6107	. . . . . . 7 ⊢ (𝜑 → (dist‘𝐻) = (dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))
70	68, 69	syl5eq 2656	. . . . . 6 ⊢ (𝜑 → 𝐸 = (dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))
71	70	oveqdr 6573	. . . . 5 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓𝐸𝑔) = (𝑓(dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))𝑔))
72	63, 67, 71	3eqtr4d 2654	. . . 4 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓𝐷𝑔) = (𝑓𝐸𝑔))
73	2, 72	eqtr2d 2645	. . 3 ⊢ ((𝜑 ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑓𝐸𝑔) = (𝑓(𝐷 ↾ (𝐵 × 𝐵))𝑔))
74	73	ralrimivva 2954	. 2 ⊢ (𝜑 → ∀𝑓 ∈ 𝐵 ∀𝑔 ∈ 𝐵 (𝑓𝐸𝑔) = (𝑓(𝐷 ↾ (𝐵 × 𝐵))𝑔))
75		mptexg 6389	. . . . . 6 ⊢ (𝐼 ∈ 𝑊 → (𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)) ∈ V)
76	18, 75	syl 17	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)) ∈ V)
77		eqid 2610	. . . . . . 7 ⊢ (𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)) = (𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))
78	32, 77	dmmpti 5936	. . . . . 6 ⊢ dom (𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)) = 𝐼
79	78	a1i 11	. . . . 5 ⊢ (𝜑 → dom (𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)) = 𝐼)
80	29, 31, 76, 30, 79, 61	prdsdsfn 15948	. . . 4 ⊢ (𝜑 → (dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) Fn ((Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) × (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))))
81	42	sqxpeqd 5065	. . . . 5 ⊢ (𝜑 → (𝐵 × 𝐵) = ((Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) × (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴))))))
82	70, 81	fneq12d 5897	. . . 4 ⊢ (𝜑 → (𝐸 Fn (𝐵 × 𝐵) ↔ (dist‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) Fn ((Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))) × (Base‘(𝑇Xs(𝑥 ∈ 𝐼 ↦ (𝑅 ↾s 𝐴)))))))
83	80, 82	mpbird 246	. . 3 ⊢ (𝜑 → 𝐸 Fn (𝐵 × 𝐵))
84		mptexg 6389	. . . . . . 7 ⊢ (𝐼 ∈ 𝑊 → (𝑥 ∈ 𝐼 ↦ 𝑅) ∈ V)
85	18, 84	syl 17	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐼 ↦ 𝑅) ∈ V)
86		dmmptg 5549	. . . . . . 7 ⊢ (∀𝑥 ∈ 𝐼 𝑅 ∈ 𝑋 → dom (𝑥 ∈ 𝐼 ↦ 𝑅) = 𝐼)
87	21, 86	syl 17	. . . . . 6 ⊢ (𝜑 → dom (𝑥 ∈ 𝐼 ↦ 𝑅) = 𝐼)
88	14, 16, 85, 15, 87, 53	prdsdsfn 15948	. . . . 5 ⊢ (𝜑 → (dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) Fn ((Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) × (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))))
89	44	sqxpeqd 5065	. . . . . 6 ⊢ (𝜑 → ((Base‘𝑌) × (Base‘𝑌)) = ((Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) × (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅)))))
90	66, 89	fneq12d 5897	. . . . 5 ⊢ (𝜑 → (𝐷 Fn ((Base‘𝑌) × (Base‘𝑌)) ↔ (dist‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) Fn ((Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))) × (Base‘(𝑆Xs(𝑥 ∈ 𝐼 ↦ 𝑅))))))
91	88, 90	mpbird 246	. . . 4 ⊢ (𝜑 → 𝐷 Fn ((Base‘𝑌) × (Base‘𝑌)))
92		xpss12 5148	. . . . 5 ⊢ ((𝐵 ⊆ (Base‘𝑌) ∧ 𝐵 ⊆ (Base‘𝑌)) → (𝐵 × 𝐵) ⊆ ((Base‘𝑌) × (Base‘𝑌)))
93	45, 45, 92	syl2anc 691	. . . 4 ⊢ (𝜑 → (𝐵 × 𝐵) ⊆ ((Base‘𝑌) × (Base‘𝑌)))
94		fnssres 5918	. . . 4 ⊢ ((𝐷 Fn ((Base‘𝑌) × (Base‘𝑌)) ∧ (𝐵 × 𝐵) ⊆ ((Base‘𝑌) × (Base‘𝑌))) → (𝐷 ↾ (𝐵 × 𝐵)) Fn (𝐵 × 𝐵))
95	91, 93, 94	syl2anc 691	. . 3 ⊢ (𝜑 → (𝐷 ↾ (𝐵 × 𝐵)) Fn (𝐵 × 𝐵))
96		eqfnov2 6665	. . 3 ⊢ ((𝐸 Fn (𝐵 × 𝐵) ∧ (𝐷 ↾ (𝐵 × 𝐵)) Fn (𝐵 × 𝐵)) → (𝐸 = (𝐷 ↾ (𝐵 × 𝐵)) ↔ ∀𝑓 ∈ 𝐵 ∀𝑔 ∈ 𝐵 (𝑓𝐸𝑔) = (𝑓(𝐷 ↾ (𝐵 × 𝐵))𝑔)))
97	83, 95, 96	syl2anc 691	. 2 ⊢ (𝜑 → (𝐸 = (𝐷 ↾ (𝐵 × 𝐵)) ↔ ∀𝑓 ∈ 𝐵 ∀𝑔 ∈ 𝐵 (𝑓𝐸𝑔) = (𝑓(𝐷 ↾ (𝐵 × 𝐵))𝑔)))
98	74, 97	mpbird 246	1 ⊢ (𝜑 → 𝐸 = (𝐷 ↾ (𝐵 × 𝐵)))

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977  ∀wral 2896  Vcvv 3173   ∪ cun 3538   ⊆ wss 3540  {csn 4125   ↦ cmpt 4643   × cxp 5036  dom cdm 5038  ran crn 5039   ↾ cres 5040   Fn wfn 5799  ‘cfv 5804  (class class class)co 6549  Xcixp 7794  supcsup 8229  0cc0 9815  ℝ^*cxr 9952   < clt 9953  Basecbs 15695   ↾_s cress 15696  distcds 15777  X_scprds 15929

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-map 7746  df-ixp 7795  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-sup 8231  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-fz 12198  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-ress 15702  df-plusg 15781  df-mulr 15782  df-sca 15784  df-vsca 15785  df-ip 15786  df-tset 15787  df-ple 15788  df-ds 15791  df-hom 15793  df-cco 15794  df-prds 15931

This theorem is referenced by:  resspwsds  21987  prdsbnd2  32764