Theorem xpsdsval 24575

Description: Value of the metric in a binary structure product. (Contributed by Mario Carneiro, 20-Aug-2015.)

Hypotheses

Ref	Expression
xpsds.t	⊢ 𝑇 = (𝑅 ×s 𝑆)
xpsds.x	⊢ 𝑋 = (Base‘𝑅)
xpsds.y	⊢ 𝑌 = (Base‘𝑆)
xpsds.1	⊢ (𝜑 → 𝑅 ∈ 𝑉)
xpsds.2	⊢ (𝜑 → 𝑆 ∈ 𝑊)
xpsds.p	⊢ 𝑃 = (dist‘𝑇)
xpsds.m	⊢ 𝑀 = ((dist‘𝑅) ↾ (𝑋 × 𝑋))
xpsds.n	⊢ 𝑁 = ((dist‘𝑆) ↾ (𝑌 × 𝑌))
xpsds.3	⊢ (𝜑 → 𝑀 ∈ (∞Met‘𝑋))
xpsds.4	⊢ (𝜑 → 𝑁 ∈ (∞Met‘𝑌))
xpsds.a	⊢ (𝜑 → 𝐴 ∈ 𝑋)
xpsds.b	⊢ (𝜑 → 𝐵 ∈ 𝑌)
xpsds.c	⊢ (𝜑 → 𝐶 ∈ 𝑋)
xpsds.d	⊢ (𝜑 → 𝐷 ∈ 𝑌)

Assertion

Ref	Expression
xpsdsval	⊢ (𝜑 → (⟨𝐴, 𝐵⟩𝑃⟨𝐶, 𝐷⟩) = sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))

Proof of Theorem xpsdsval

Dummy variables 𝑥 𝑘 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		xpsds.t	. . . . 5 ⊢ 𝑇 = (𝑅 ×s 𝑆)
2		xpsds.x	. . . . 5 ⊢ 𝑋 = (Base‘𝑅)
3		xpsds.y	. . . . 5 ⊢ 𝑌 = (Base‘𝑆)
4		xpsds.1	. . . . 5 ⊢ (𝜑 → 𝑅 ∈ 𝑉)
5		xpsds.2	. . . . 5 ⊢ (𝜑 → 𝑆 ∈ 𝑊)
6		eqid 2766	. . . . 5 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) = (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})
7		eqid 2766	. . . . 5 ⊢ (Scalar‘𝑅) = (Scalar‘𝑅)
8		eqid 2766	. . . . 5 ⊢ ((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}) = ((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})
9	1, 2, 3, 4, 5, 6, 7, 8	xpsval 17649	. . . 4 ⊢ (𝜑 → 𝑇 = (◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) “s ((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})))
10	1, 2, 3, 4, 5, 6, 7, 8	xpsrnbas 17650	. . . 4 ⊢ (𝜑 → ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) = (Base‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})))
11	6	xpsff1o2 17648	. . . . 5 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):(𝑋 × 𝑌)–1-1-onto→ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})
12		f1ocnv 6840	. . . . 5 ⊢ ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):(𝑋 × 𝑌)–1-1-onto→ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) → ◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})–1-1-onto→(𝑋 × 𝑌))
13	11, 12	mp1i 14	. . . 4 ⊢ (𝜑 → ◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})–1-1-onto→(𝑋 × 𝑌))
14		ovexd 7458	. . . 4 ⊢ (𝜑 → ((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}) ∈ V)
15		eqid 2766	. . . 4 ⊢ ((dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ↾ (ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) × ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))) = ((dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ↾ (ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) × ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})))
16		xpsds.p	. . . 4 ⊢ 𝑃 = (dist‘𝑇)
17		xpsds.m	. . . . . 6 ⊢ 𝑀 = ((dist‘𝑅) ↾ (𝑋 × 𝑋))
18		xpsds.n	. . . . . 6 ⊢ 𝑁 = ((dist‘𝑆) ↾ (𝑌 × 𝑌))
19		xpsds.3	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ (∞Met‘𝑋))
20		xpsds.4	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ (∞Met‘𝑌))
21	1, 2, 3, 4, 5, 16, 17, 18, 19, 20	xpsxmetlem 24573	. . . . 5 ⊢ (𝜑 → (dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ∈ (∞Met‘ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})))
22		ssid 3962	. . . . 5 ⊢ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) ⊆ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})
23		xmetres2 24555	. . . . 5 ⊢ (((dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ∈ (∞Met‘ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})) ∧ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) ⊆ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})) → ((dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ↾ (ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) × ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))) ∈ (∞Met‘ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})))
24	21, 22, 23	sylancl 598	. . . 4 ⊢ (𝜑 → ((dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ↾ (ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) × ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))) ∈ (∞Met‘ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})))
25		df-ov 7426	. . . . . 6 ⊢ (𝐴(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})𝐵) = ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐴, 𝐵⟩)
26		xpsds.a	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ 𝑋)
27		xpsds.b	. . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ 𝑌)
28	6	xpsfval 17645	. . . . . . 7 ⊢ ((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌) → (𝐴(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})𝐵) = {⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩})
29	26, 27, 28	syl2anc 596	. . . . . 6 ⊢ (𝜑 → (𝐴(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})𝐵) = {⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩})
30	25, 29	eqtr3id 2815	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐴, 𝐵⟩) = {⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩})
31	26, 27	opelxpd 5705	. . . . . 6 ⊢ (𝜑 → ⟨𝐴, 𝐵⟩ ∈ (𝑋 × 𝑌))
32		f1of 6827	. . . . . . . 8 ⊢ ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):(𝑋 × 𝑌)–1-1-onto→ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):(𝑋 × 𝑌)⟶ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
33	11, 32	ax-mp 5	. . . . . . 7 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):(𝑋 × 𝑌)⟶ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})
34	33	ffvelcdmi 7085	. . . . . 6 ⊢ (⟨𝐴, 𝐵⟩ ∈ (𝑋 × 𝑌) → ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐴, 𝐵⟩) ∈ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
35	31, 34	syl 18	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐴, 𝐵⟩) ∈ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
36	30, 35	eqeltrrd 2867	. . . 4 ⊢ (𝜑 → {⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} ∈ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
37		df-ov 7426	. . . . . 6 ⊢ (𝐶(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})𝐷) = ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐶, 𝐷⟩)
38		xpsds.c	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ 𝑋)
39		xpsds.d	. . . . . . 7 ⊢ (𝜑 → 𝐷 ∈ 𝑌)
40	6	xpsfval 17645	. . . . . . 7 ⊢ ((𝐶 ∈ 𝑋 ∧ 𝐷 ∈ 𝑌) → (𝐶(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})𝐷) = {⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩})
41	38, 39, 40	syl2anc 596	. . . . . 6 ⊢ (𝜑 → (𝐶(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})𝐷) = {⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩})
42	37, 41	eqtr3id 2815	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐶, 𝐷⟩) = {⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩})
43	38, 39	opelxpd 5705	. . . . . 6 ⊢ (𝜑 → ⟨𝐶, 𝐷⟩ ∈ (𝑋 × 𝑌))
44	33	ffvelcdmi 7085	. . . . . 6 ⊢ (⟨𝐶, 𝐷⟩ ∈ (𝑋 × 𝑌) → ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐶, 𝐷⟩) ∈ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
45	43, 44	syl 18	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐶, 𝐷⟩) ∈ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
46	42, 45	eqeltrrd 2867	. . . 4 ⊢ (𝜑 → {⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩} ∈ ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
47	9, 10, 13, 14, 15, 16, 24, 36, 46	imasdsf1o 24568	. . 3 ⊢ (𝜑 → ((◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩})𝑃(◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩})) = ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} ((dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ↾ (ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) × ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))){⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}))
48	36, 46	ovresd 7590	. . 3 ⊢ (𝜑 → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} ((dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) ↾ (ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) × ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))){⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}) = ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} (dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})){⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}))
49	47, 48	eqtrd 2801	. 2 ⊢ (𝜑 → ((◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩})𝑃(◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩})) = ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} (dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})){⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}))
50		f1ocnvfv 7287	. . . . 5 ⊢ (((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):(𝑋 × 𝑌)–1-1-onto→ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) ∧ ⟨𝐴, 𝐵⟩ ∈ (𝑋 × 𝑌)) → (((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐴, 𝐵⟩) = {⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} → (◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}) = ⟨𝐴, 𝐵⟩))
51	11, 31, 50	sylancr 599	. . . 4 ⊢ (𝜑 → (((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐴, 𝐵⟩) = {⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} → (◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}) = ⟨𝐴, 𝐵⟩))
52	30, 51	mpd 16	. . 3 ⊢ (𝜑 → (◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}) = ⟨𝐴, 𝐵⟩)
53		f1ocnvfv 7287	. . . . 5 ⊢ (((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}):(𝑋 × 𝑌)–1-1-onto→ran (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}) ∧ ⟨𝐶, 𝐷⟩ ∈ (𝑋 × 𝑌)) → (((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐶, 𝐷⟩) = {⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩} → (◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}) = ⟨𝐶, 𝐷⟩))
54	11, 43, 53	sylancr 599	. . . 4 ⊢ (𝜑 → (((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘⟨𝐶, 𝐷⟩) = {⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩} → (◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}) = ⟨𝐶, 𝐷⟩))
55	42, 54	mpd 16	. . 3 ⊢ (𝜑 → (◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}) = ⟨𝐶, 𝐷⟩)
56	52, 55	oveq12d 7441	. 2 ⊢ (𝜑 → ((◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩})𝑃(◡(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})‘{⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩})) = (⟨𝐴, 𝐵⟩𝑃⟨𝐶, 𝐷⟩))
57		eqid 2766	. . . 4 ⊢ (Base‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) = (Base‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}))
58		fvexd 6903	. . . 4 ⊢ (𝜑 → (Scalar‘𝑅) ∈ V)
59		2on 8476	. . . . 5 ⊢ 2o ∈ On
60	59	a1i 11	. . . 4 ⊢ (𝜑 → 2o ∈ On)
61		fnpr2o 17636	. . . . 5 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑆 ∈ 𝑊) → {⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩} Fn 2o)
62	4, 5, 61	syl2anc 596	. . . 4 ⊢ (𝜑 → {⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩} Fn 2o)
63	36, 10	eleqtrd 2868	. . . 4 ⊢ (𝜑 → {⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} ∈ (Base‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})))
64	46, 10	eleqtrd 2868	. . . 4 ⊢ (𝜑 → {⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩} ∈ (Base‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})))
65		eqid 2766	. . . 4 ⊢ (dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})) = (dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}))
66	8, 57, 58, 60, 62, 63, 64, 65	prdsdsval 17556	. . 3 ⊢ (𝜑 → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} (dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})){⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}) = sup((ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) ∪ {0}), ℝ*, < ))
67		df2o3 8470	. . . . . . . . . . 11 ⊢ 2o = {∅, 1o}
68	67	rexeqi 3325	. . . . . . . . . 10 ⊢ (∃𝑘 ∈ 2o 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) ↔ ∃𝑘 ∈ {∅, 1o}𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)))
69		0ex 5275	. . . . . . . . . . 11 ⊢ ∅ ∈ V
70		1oex 8472	. . . . . . . . . . 11 ⊢ 1o ∈ V
71		2fveq3 6893	. . . . . . . . . . . . 13 ⊢ (𝑘 = ∅ → (dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘)) = (dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅)))
72		fveq2 6888	. . . . . . . . . . . . 13 ⊢ (𝑘 = ∅ → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘) = ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅))
73		fveq2 6888	. . . . . . . . . . . . 13 ⊢ (𝑘 = ∅ → ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘) = ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅))
74	71, 72, 73	oveq123d 7444	. . . . . . . . . . . 12 ⊢ (𝑘 = ∅ → (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅)))
75	74	eqeq2d 2777	. . . . . . . . . . 11 ⊢ (𝑘 = ∅ → (𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) ↔ 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅))))
76		2fveq3 6893	. . . . . . . . . . . . 13 ⊢ (𝑘 = 1o → (dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘)) = (dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o)))
77		fveq2 6888	. . . . . . . . . . . . 13 ⊢ (𝑘 = 1o → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘) = ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o))
78		fveq2 6888	. . . . . . . . . . . . 13 ⊢ (𝑘 = 1o → ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘) = ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o))
79	76, 77, 78	oveq123d 7444	. . . . . . . . . . . 12 ⊢ (𝑘 = 1o → (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o)))
80	79	eqeq2d 2777	. . . . . . . . . . 11 ⊢ (𝑘 = 1o → (𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) ↔ 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o))))
81	69, 70, 75, 80	rexpr 4672	. . . . . . . . . 10 ⊢ (∃𝑘 ∈ {∅, 1o}𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) ↔ (𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅)) ∨ 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o))))
82	68, 81	bitri 278	. . . . . . . . 9 ⊢ (∃𝑘 ∈ 2o 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) ↔ (𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅)) ∨ 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o))))
83		fvpr0o 17638	. . . . . . . . . . . . . . 15 ⊢ (𝑅 ∈ 𝑉 → ({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅) = 𝑅)
84	4, 83	syl 18	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅) = 𝑅)
85	84	fveq2d 6892	. . . . . . . . . . . . 13 ⊢ (𝜑 → (dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅)) = (dist‘𝑅))
86		fvpr0o 17638	. . . . . . . . . . . . . 14 ⊢ (𝐴 ∈ 𝑋 → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅) = 𝐴)
87	26, 86	syl 18	. . . . . . . . . . . . 13 ⊢ (𝜑 → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅) = 𝐴)
88		fvpr0o 17638	. . . . . . . . . . . . . 14 ⊢ (𝐶 ∈ 𝑋 → ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅) = 𝐶)
89	38, 88	syl 18	. . . . . . . . . . . . 13 ⊢ (𝜑 → ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅) = 𝐶)
90	85, 87, 89	oveq123d 7444	. . . . . . . . . . . 12 ⊢ (𝜑 → (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅)) = (𝐴(dist‘𝑅)𝐶))
91	17	oveqi 7436	. . . . . . . . . . . . 13 ⊢ (𝐴𝑀𝐶) = (𝐴((dist‘𝑅) ↾ (𝑋 × 𝑋))𝐶)
92	26, 38	ovresd 7590	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐴((dist‘𝑅) ↾ (𝑋 × 𝑋))𝐶) = (𝐴(dist‘𝑅)𝐶))
93	91, 92	eqtrid 2813	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐴𝑀𝐶) = (𝐴(dist‘𝑅)𝐶))
94	90, 93	eqtr4d 2804	. . . . . . . . . . 11 ⊢ (𝜑 → (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅)) = (𝐴𝑀𝐶))
95	94	eqeq2d 2777	. . . . . . . . . 10 ⊢ (𝜑 → (𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅)) ↔ 𝑥 = (𝐴𝑀𝐶)))
96		fvpr1o 17639	. . . . . . . . . . . . . . 15 ⊢ (𝑆 ∈ 𝑊 → ({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o) = 𝑆)
97	5, 96	syl 18	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o) = 𝑆)
98	97	fveq2d 6892	. . . . . . . . . . . . 13 ⊢ (𝜑 → (dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o)) = (dist‘𝑆))
99		fvpr1o 17639	. . . . . . . . . . . . . 14 ⊢ (𝐵 ∈ 𝑌 → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o) = 𝐵)
100	27, 99	syl 18	. . . . . . . . . . . . 13 ⊢ (𝜑 → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o) = 𝐵)
101		fvpr1o 17639	. . . . . . . . . . . . . 14 ⊢ (𝐷 ∈ 𝑌 → ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o) = 𝐷)
102	39, 101	syl 18	. . . . . . . . . . . . 13 ⊢ (𝜑 → ({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o) = 𝐷)
103	98, 100, 102	oveq123d 7444	. . . . . . . . . . . 12 ⊢ (𝜑 → (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o)) = (𝐵(dist‘𝑆)𝐷))
104	18	oveqi 7436	. . . . . . . . . . . . 13 ⊢ (𝐵𝑁𝐷) = (𝐵((dist‘𝑆) ↾ (𝑌 × 𝑌))𝐷)
105	27, 39	ovresd 7590	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐵((dist‘𝑆) ↾ (𝑌 × 𝑌))𝐷) = (𝐵(dist‘𝑆)𝐷))
106	104, 105	eqtrid 2813	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐵𝑁𝐷) = (𝐵(dist‘𝑆)𝐷))
107	103, 106	eqtr4d 2804	. . . . . . . . . . 11 ⊢ (𝜑 → (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o)) = (𝐵𝑁𝐷))
108	107	eqeq2d 2777	. . . . . . . . . 10 ⊢ (𝜑 → (𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o)) ↔ 𝑥 = (𝐵𝑁𝐷)))
109	95, 108	orbi12d 932	. . . . . . . . 9 ⊢ (𝜑 → ((𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘∅)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘∅))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘∅)) ∨ 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘1o)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘1o))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘1o))) ↔ (𝑥 = (𝐴𝑀𝐶) ∨ 𝑥 = (𝐵𝑁𝐷))))
110	82, 109	bitrid 286	. . . . . . . 8 ⊢ (𝜑 → (∃𝑘 ∈ 2o 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)) ↔ (𝑥 = (𝐴𝑀𝐶) ∨ 𝑥 = (𝐵𝑁𝐷))))
111		eqid 2766	. . . . . . . . . 10 ⊢ (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) = (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)))
112	111	elrnmpt 5953	. . . . . . . . 9 ⊢ (𝑥 ∈ V → (𝑥 ∈ ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) ↔ ∃𝑘 ∈ 2o 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))))
113	112	elv 3463	. . . . . . . 8 ⊢ (𝑥 ∈ ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) ↔ ∃𝑘 ∈ 2o 𝑥 = (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘)))
114		vex 3462	. . . . . . . . 9 ⊢ 𝑥 ∈ V
115	114	elpr 4619	. . . . . . . 8 ⊢ (𝑥 ∈ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)} ↔ (𝑥 = (𝐴𝑀𝐶) ∨ 𝑥 = (𝐵𝑁𝐷)))
116	110, 113, 115	3bitr4g 317	. . . . . . 7 ⊢ (𝜑 → (𝑥 ∈ ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) ↔ 𝑥 ∈ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)}))
117	116	eqrdv 2764	. . . . . 6 ⊢ (𝜑 → ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) = {(𝐴𝑀𝐶), (𝐵𝑁𝐷)})
118	117	uneq1d 4124	. . . . 5 ⊢ (𝜑 → (ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) ∪ {0}) = ({(𝐴𝑀𝐶), (𝐵𝑁𝐷)} ∪ {0}))
119		uncom 4115	. . . . 5 ⊢ ({(𝐴𝑀𝐶), (𝐵𝑁𝐷)} ∪ {0}) = ({0} ∪ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)})
120	118, 119	eqtrdi 2817	. . . 4 ⊢ (𝜑 → (ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) ∪ {0}) = ({0} ∪ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)}))
121	120	supeq1d 9416	. . 3 ⊢ (𝜑 → sup((ran (𝑘 ∈ 2o ↦ (({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩}‘𝑘)(dist‘({⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩}‘𝑘))({⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}‘𝑘))) ∪ {0}), ℝ*, < ) = sup(({0} ∪ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)}), ℝ*, < ))
122		0xr 11274	. . . . . 6 ⊢ 0 ∈ ℝ*
123	122	a1i 11	. . . . 5 ⊢ (𝜑 → 0 ∈ ℝ*)
124	123	snssd 4757	. . . 4 ⊢ (𝜑 → {0} ⊆ ℝ*)
125		xmetcl 24525	. . . . . 6 ⊢ ((𝑀 ∈ (∞Met‘𝑋) ∧ 𝐴 ∈ 𝑋 ∧ 𝐶 ∈ 𝑋) → (𝐴𝑀𝐶) ∈ ℝ*)
126	19, 26, 38, 125	syl3anc 1398	. . . . 5 ⊢ (𝜑 → (𝐴𝑀𝐶) ∈ ℝ*)
127		xmetcl 24525	. . . . . 6 ⊢ ((𝑁 ∈ (∞Met‘𝑌) ∧ 𝐵 ∈ 𝑌 ∧ 𝐷 ∈ 𝑌) → (𝐵𝑁𝐷) ∈ ℝ*)
128	20, 27, 39, 127	syl3anc 1398	. . . . 5 ⊢ (𝜑 → (𝐵𝑁𝐷) ∈ ℝ*)
129	126, 128	prssd 4793	. . . 4 ⊢ (𝜑 → {(𝐴𝑀𝐶), (𝐵𝑁𝐷)} ⊆ ℝ*)
130		xrltso 13184	. . . . . 6 ⊢ < Or ℝ*
131		supsn 9443	. . . . . 6 ⊢ (( < Or ℝ* ∧ 0 ∈ ℝ*) → sup({0}, ℝ*, < ) = 0)
132	130, 122, 131	mp2an 705	. . . . 5 ⊢ sup({0}, ℝ*, < ) = 0
133		supxrcl 13359	. . . . . . 7 ⊢ ({(𝐴𝑀𝐶), (𝐵𝑁𝐷)} ⊆ ℝ* → sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ) ∈ ℝ*)
134	129, 133	syl 18	. . . . . 6 ⊢ (𝜑 → sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ) ∈ ℝ*)
135		xmetge0 24538	. . . . . . 7 ⊢ ((𝑀 ∈ (∞Met‘𝑋) ∧ 𝐴 ∈ 𝑋 ∧ 𝐶 ∈ 𝑋) → 0 ≤ (𝐴𝑀𝐶))
136	19, 26, 38, 135	syl3anc 1398	. . . . . 6 ⊢ (𝜑 → 0 ≤ (𝐴𝑀𝐶))
137		ovex 7456	. . . . . . . 8 ⊢ (𝐴𝑀𝐶) ∈ V
138	137	prid1 4733	. . . . . . 7 ⊢ (𝐴𝑀𝐶) ∈ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)}
139		supxrub 13368	. . . . . . 7 ⊢ (({(𝐴𝑀𝐶), (𝐵𝑁𝐷)} ⊆ ℝ* ∧ (𝐴𝑀𝐶) ∈ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)}) → (𝐴𝑀𝐶) ≤ sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))
140	129, 138, 139	sylancl 598	. . . . . 6 ⊢ (𝜑 → (𝐴𝑀𝐶) ≤ sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))
141	123, 126, 134, 136, 140	xrletrd 13205	. . . . 5 ⊢ (𝜑 → 0 ≤ sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))
142	132, 141	eqbrtrid 5151	. . . 4 ⊢ (𝜑 → sup({0}, ℝ*, < ) ≤ sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))
143		supxrun 13360	. . . 4 ⊢ (({0} ⊆ ℝ* ∧ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)} ⊆ ℝ* ∧ sup({0}, ℝ*, < ) ≤ sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < )) → sup(({0} ∪ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)}), ℝ*, < ) = sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))
144	124, 129, 142, 143	syl3anc 1398	. . 3 ⊢ (𝜑 → sup(({0} ∪ {(𝐴𝑀𝐶), (𝐵𝑁𝐷)}), ℝ*, < ) = sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))
145	66, 121, 144	3eqtrd 2805	. 2 ⊢ (𝜑 → ({⟨∅, 𝐴⟩, ⟨1o, 𝐵⟩} (dist‘((Scalar‘𝑅)Xs{⟨∅, 𝑅⟩, ⟨1o, 𝑆⟩})){⟨∅, 𝐶⟩, ⟨1o, 𝐷⟩}) = sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))
146	49, 56, 145	3eqtr3d 2809	1 ⊢ (𝜑 → (⟨𝐴, 𝐵⟩𝑃⟨𝐶, 𝐷⟩) = sup({(𝐴𝑀𝐶), (𝐵𝑁𝐷)}, ℝ*, < ))

This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∨ wo 861   = wceq 1570   ∈ wcel 2146  ∃wrex 3092  Vcvv 3458   ∪ cun 3906   ⊆ wss 3908  ∅c0 4289  {csn 4594  {cpr 4596  ⟨cop 4600   class class class wbr 5114   ↦ cmpt 5197   Or wor 5573   × cxp 5664  ^◡ccnv 5665  ran crn 5667   ↾ cres 5668  Oncon0 6367   Fn wfn 6538  ⟶wf 6539  –1-1-onto→wf1o 6542  ‘cfv 6543  (class class class)co 7423   ∈ cmpo 7425  1_oc1o 8455  2_oc2o 8456  supcsup 9410  0cc0 11118  ℝ^*cxr 11260   < clt 11261   ≤ cle 11262  Basecbs 17294  Scalarcsca 17338  distcds 17344  X_scprds 17523   ×_s cxps 17585  ∞Metcxmet 21544

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2738  ax-rep 5243  ax-sep 5262  ax-nul 5274  ax-pow 5341  ax-pr 5409  ax-un 7745  ax-cnex 11174  ax-resscn 11175  ax-1cn 11176  ax-icn 11177  ax-addcl 11178  ax-addrcl 11179  ax-mulcl 11180  ax-mulrcl 11181  ax-mulcom 11182  ax-addass 11183  ax-mulass 11184  ax-distr 11185  ax-i2m1 11186  ax-1ne0 11187  ax-1rid 11188  ax-rnegex 11189  ax-rrecex 11190  ax-cnre 11191  ax-pre-lttri 11192  ax-pre-lttrn 11193  ax-pre-ltadd 11194  ax-pre-mulgt0 11195  ax-pre-sup 11196

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2570  df-eu 2600  df-clab 2745  df-cleq 2758  df-clel 2841  df-nfc 2915  df-ne 2962  df-nel 3068  df-ral 3083  df-rex 3093  df-rmo 3372  df-reu 3373  df-rab 3420  df-v 3460  df-sbc 3748  df-csb 3857  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-pss 3928  df-nul 4290  df-if 4493  df-pw 4569  df-sn 4595  df-pr 4597  df-tp 4599  df-op 4601  df-uni 4878  df-int 4918  df-iun 4963  df-iin 4964  df-br 5115  df-opab 5179  df-mpt 5198  df-tr 5224  df-id 5561  df-eprel 5566  df-po 5574  df-so 5575  df-fr 5619  df-se 5620  df-we 5621  df-xp 5672  df-rel 5673  df-cnv 5674  df-co 5675  df-dm 5676  df-rn 5677  df-res 5678  df-ima 5679  df-pred 6309  df-ord 6370  df-on 6371  df-lim 6372  df-suc 6373  df-iota 6499  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 7380  df-ov 7426  df-oprab 7427  df-mpo 7428  df-of 7687  df-om 7872  df-1st 7995  df-2nd 7996  df-supp 8166  df-frecs 8287  df-wrecs 8318  df-recs 8367  df-rdg 8406  df-1o 8462  df-2o 8463  df-er 8703  df-map 8835  df-ixp 8905  df-en 8953  df-dom 8954  df-sdom 8955  df-fin 8956  df-fsupp 9332  df-sup 9412  df-inf 9413  df-oi 9482  df-card 9944  df-pnf 11263  df-mnf 11264  df-xr 11265  df-ltxr 11266  df-le 11267  df-sub 11461  df-neg 11462  df-div 11890  df-nn 12252  df-2 12321  df-3 12322  df-4 12323  df-5 12324  df-6 12325  df-7 12326  df-8 12327  df-9 12328  df-n0 12523  df-z 12610  df-dec 12730  df-uz 12881  df-rp 13035  df-xneg 13155  df-xadd 13156  df-xmul 13157  df-icc 13397  df-fz 13554  df-fzo 13702  df-seq 14058  df-hash 14387  df-struct 17232  df-sets 17249  df-slot 17267  df-ndx 17279  df-base 17295  df-ress 17316  df-plusg 17348  df-mulr 17349  df-sca 17351  df-vsca 17352  df-ip 17353  df-tset 17354  df-ple 17355  df-ds 17357  df-hom 17359  df-cco 17360  df-0g 17519  df-gsum 17520  df-prds 17525  df-xrs 17581  df-imas 17587  df-xps 17589  df-mre 17663  df-mrc 17664  df-acs 17666  df-mgm 18723  df-sgrp 18806  df-mnd 18822  df-submnd 18873  df-mulg 19165  df-cntz 19418  df-cmn 19883  df-xmet 21552

This theorem is used by:  tmsxpsval  24732