Theorem rrxip 25288

Description: The inner product of the generalized real Euclidean spaces. (Contributed by Thierry Arnoux, 16-Jun-2019.)

Hypotheses

Ref	Expression
rrxval.r	⊢ 𝐻 = (ℝ^‘𝐼)
rrxbase.b	⊢ 𝐵 = (Base‘𝐻)

Assertion

Ref	Expression
rrxip	⊢ (𝐼 ∈ 𝑉 → (𝑓 ∈ (ℝ ↑m 𝐼), 𝑔 ∈ (ℝ ↑m 𝐼) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥))))) = (·𝑖‘𝐻))

Distinct variable groups:   𝑓,𝑔,𝑥,𝐵   𝑓,𝐼,𝑔,𝑥   𝑓,𝑉,𝑔,𝑥

Allowed substitution hints:   𝐻(𝑥,𝑓,𝑔)

Proof of Theorem rrxip

Step	Hyp	Ref	Expression
1		rrxval.r	. . . 4 ⊢ 𝐻 = (ℝ^‘𝐼)
2		rrxbase.b	. . . 4 ⊢ 𝐵 = (Base‘𝐻)
3	1, 2	rrxprds 25287	. . 3 ⊢ (𝐼 ∈ 𝑉 → 𝐻 = (toℂPreHil‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)))
4	3	fveq2d 6826	. 2 ⊢ (𝐼 ∈ 𝑉 → (·𝑖‘𝐻) = (·𝑖‘(toℂPreHil‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵))))
5		eqid 2729	. . . 4 ⊢ (toℂPreHil‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)) = (toℂPreHil‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵))
6		eqid 2729	. . . 4 ⊢ (·𝑖‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)) = (·𝑖‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵))
7	5, 6	tcphip 25123	. . 3 ⊢ (·𝑖‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)) = (·𝑖‘(toℂPreHil‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)))
8	2	fvexi 6836	. . . . 5 ⊢ 𝐵 ∈ V
9		eqid 2729	. . . . . 6 ⊢ ((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵) = ((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)
10		eqid 2729	. . . . . 6 ⊢ (·𝑖‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = (·𝑖‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})))
11	9, 10	ressip 17249	. . . . 5 ⊢ (𝐵 ∈ V → (·𝑖‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = (·𝑖‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)))
12	8, 11	ax-mp 5	. . . 4 ⊢ (·𝑖‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = (·𝑖‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵))
13		eqid 2729	. . . . . 6 ⊢ (ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) = (ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))
14		refld 21526	. . . . . . 7 ⊢ ℝfld ∈ Field
15	14	a1i 11	. . . . . 6 ⊢ (𝐼 ∈ 𝑉 → ℝfld ∈ Field)
16		snex 5375	. . . . . . 7 ⊢ {((subringAlg ‘ℝfld)‘ℝ)} ∈ V
17		xpexg 7686	. . . . . . 7 ⊢ ((𝐼 ∈ 𝑉 ∧ {((subringAlg ‘ℝfld)‘ℝ)} ∈ V) → (𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}) ∈ V)
18	16, 17	mpan2 691	. . . . . 6 ⊢ (𝐼 ∈ 𝑉 → (𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}) ∈ V)
19		eqid 2729	. . . . . 6 ⊢ (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})))
20		fvex 6835	. . . . . . . . 9 ⊢ ((subringAlg ‘ℝfld)‘ℝ) ∈ V
21	20	snnz 4728	. . . . . . . 8 ⊢ {((subringAlg ‘ℝfld)‘ℝ)} ≠ ∅
22		dmxp 5871	. . . . . . . 8 ⊢ ({((subringAlg ‘ℝfld)‘ℝ)} ≠ ∅ → dom (𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}) = 𝐼)
23	21, 22	ax-mp 5	. . . . . . 7 ⊢ dom (𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}) = 𝐼
24	23	a1i 11	. . . . . 6 ⊢ (𝐼 ∈ 𝑉 → dom (𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}) = 𝐼)
25	13, 15, 18, 19, 24, 10	prdsip 17365	. . . . 5 ⊢ (𝐼 ∈ 𝑉 → (·𝑖‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = (𝑓 ∈ (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))), 𝑔 ∈ (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥))(𝑔‘𝑥))))))
26	13, 15, 18, 19, 24	prdsbas 17361	. . . . . . 7 ⊢ (𝐼 ∈ 𝑉 → (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = X𝑥 ∈ 𝐼 (Base‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥)))
27		eqidd 2730	. . . . . . . . . . 11 ⊢ (𝑥 ∈ 𝐼 → ((subringAlg ‘ℝfld)‘ℝ) = ((subringAlg ‘ℝfld)‘ℝ))
28		rebase 21513	. . . . . . . . . . . . 13 ⊢ ℝ = (Base‘ℝfld)
29	28	eqimssi 3996	. . . . . . . . . . . 12 ⊢ ℝ ⊆ (Base‘ℝfld)
30	29	a1i 11	. . . . . . . . . . 11 ⊢ (𝑥 ∈ 𝐼 → ℝ ⊆ (Base‘ℝfld))
31	27, 30	srabase 21081	. . . . . . . . . 10 ⊢ (𝑥 ∈ 𝐼 → (Base‘ℝfld) = (Base‘((subringAlg ‘ℝfld)‘ℝ)))
32	28	a1i 11	. . . . . . . . . 10 ⊢ (𝑥 ∈ 𝐼 → ℝ = (Base‘ℝfld))
33	20	fvconst2 7140	. . . . . . . . . . 11 ⊢ (𝑥 ∈ 𝐼 → ((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥) = ((subringAlg ‘ℝfld)‘ℝ))
34	33	fveq2d 6826	. . . . . . . . . 10 ⊢ (𝑥 ∈ 𝐼 → (Base‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥)) = (Base‘((subringAlg ‘ℝfld)‘ℝ)))
35	31, 32, 34	3eqtr4rd 2775	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝐼 → (Base‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥)) = ℝ)
36	35	adantl 481	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑥 ∈ 𝐼) → (Base‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥)) = ℝ)
37	36	ixpeq2dva 8839	. . . . . . 7 ⊢ (𝐼 ∈ 𝑉 → X𝑥 ∈ 𝐼 (Base‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥)) = X𝑥 ∈ 𝐼 ℝ)
38		reex 11100	. . . . . . . 8 ⊢ ℝ ∈ V
39		ixpconstg 8833	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑉 ∧ ℝ ∈ V) → X𝑥 ∈ 𝐼 ℝ = (ℝ ↑m 𝐼))
40	38, 39	mpan2 691	. . . . . . 7 ⊢ (𝐼 ∈ 𝑉 → X𝑥 ∈ 𝐼 ℝ = (ℝ ↑m 𝐼))
41	26, 37, 40	3eqtrd 2768	. . . . . 6 ⊢ (𝐼 ∈ 𝑉 → (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = (ℝ ↑m 𝐼))
42		remulr 21518	. . . . . . . . . . 11 ⊢ · = (.r‘ℝfld)
43	33, 30	sraip 21086	. . . . . . . . . . 11 ⊢ (𝑥 ∈ 𝐼 → (.r‘ℝfld) = (·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥)))
44	42, 43	eqtr2id 2777	. . . . . . . . . 10 ⊢ (𝑥 ∈ 𝐼 → (·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥)) = · )
45	44	oveqd 7366	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝐼 → ((𝑓‘𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥))(𝑔‘𝑥)) = ((𝑓‘𝑥) · (𝑔‘𝑥)))
46	45	mpteq2ia 5187	. . . . . . . 8 ⊢ (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥))(𝑔‘𝑥))) = (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥)))
47	46	a1i 11	. . . . . . 7 ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥))(𝑔‘𝑥))) = (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥))))
48	47	oveq2d 7365	. . . . . 6 ⊢ (𝐼 ∈ 𝑉 → (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥))(𝑔‘𝑥)))) = (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥)))))
49	41, 41, 48	mpoeq123dv 7424	. . . . 5 ⊢ (𝐼 ∈ 𝑉 → (𝑓 ∈ (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))), 𝑔 ∈ (Base‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})‘𝑥))(𝑔‘𝑥))))) = (𝑓 ∈ (ℝ ↑m 𝐼), 𝑔 ∈ (ℝ ↑m 𝐼) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥))))))
50	25, 49	eqtrd 2764	. . . 4 ⊢ (𝐼 ∈ 𝑉 → (·𝑖‘(ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)}))) = (𝑓 ∈ (ℝ ↑m 𝐼), 𝑔 ∈ (ℝ ↑m 𝐼) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥))))))
51	12, 50	eqtr3id 2778	. . 3 ⊢ (𝐼 ∈ 𝑉 → (·𝑖‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵)) = (𝑓 ∈ (ℝ ↑m 𝐼), 𝑔 ∈ (ℝ ↑m 𝐼) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥))))))
52	7, 51	eqtr3id 2778	. 2 ⊢ (𝐼 ∈ 𝑉 → (·𝑖‘(toℂPreHil‘((ℝfldXs(𝐼 × {((subringAlg ‘ℝfld)‘ℝ)})) ↾s 𝐵))) = (𝑓 ∈ (ℝ ↑m 𝐼), 𝑔 ∈ (ℝ ↑m 𝐼) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥))))))
53	4, 52	eqtr2d 2765	1 ⊢ (𝐼 ∈ 𝑉 → (𝑓 ∈ (ℝ ↑m 𝐼), 𝑔 ∈ (ℝ ↑m 𝐼) ↦ (ℝfld Σg (𝑥 ∈ 𝐼 ↦ ((𝑓‘𝑥) · (𝑔‘𝑥))))) = (·𝑖‘𝐻))

Syntax hints:   → wi 4   = wceq 1540   ∈ wcel 2109   ≠ wne 2925  Vcvv 3436   ⊆ wss 3903  ∅c0 4284  {csn 4577   ↦ cmpt 5173   × cxp 5617  dom cdm 5619  ‘cfv 6482  (class class class)co 7349   ∈ cmpo 7351   ↑_m cmap 8753  Xcixp 8824  ℝcr 11008   · cmul 11014  Basecbs 17120   ↾_s cress 17141  ._rcmulr 17162  ·_𝑖cip 17166   Σ_g cgsu 17344  X_scprds 17349  Fieldcfield 20615  subringAlg csra 21075  ℝ_fldcrefld 21511  toℂPreHilctcph 25065  ℝ^crrx 25281

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5218  ax-sep 5235  ax-nul 5245  ax-pow 5304  ax-pr 5371  ax-un 7671  ax-cnex 11065  ax-resscn 11066  ax-1cn 11067  ax-icn 11068  ax-addcl 11069  ax-addrcl 11070  ax-mulcl 11071  ax-mulrcl 11072  ax-mulcom 11073  ax-addass 11074  ax-mulass 11075  ax-distr 11076  ax-i2m1 11077  ax-1ne0 11078  ax-1rid 11079  ax-rnegex 11080  ax-rrecex 11081  ax-cnre 11082  ax-pre-lttri 11083  ax-pre-lttrn 11084  ax-pre-ltadd 11085  ax-pre-mulgt0 11086  ax-pre-sup 11087  ax-addf 11088  ax-mulf 11089

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-rmo 3343  df-reu 3344  df-rab 3395  df-v 3438  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4285  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-tp 4582  df-op 4584  df-uni 4859  df-iun 4943  df-br 5093  df-opab 5155  df-mpt 5174  df-tr 5200  df-id 5514  df-eprel 5519  df-po 5527  df-so 5528  df-fr 5572  df-we 5574  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-rn 5630  df-res 5631  df-ima 5632  df-pred 6249  df-ord 6310  df-on 6311  df-lim 6312  df-suc 6313  df-iota 6438  df-fun 6484  df-fn 6485  df-f 6486  df-f1 6487  df-fo 6488  df-f1o 6489  df-fv 6490  df-riota 7306  df-ov 7352  df-oprab 7353  df-mpo 7354  df-om 7800  df-1st 7924  df-2nd 7925  df-tpos 8159  df-frecs 8214  df-wrecs 8245  df-recs 8294  df-rdg 8332  df-1o 8388  df-er 8625  df-map 8755  df-ixp 8825  df-en 8873  df-dom 8874  df-sdom 8875  df-fin 8876  df-sup 9332  df-pnf 11151  df-mnf 11152  df-xr 11153  df-ltxr 11154  df-le 11155  df-sub 11349  df-neg 11350  df-div 11778  df-nn 12129  df-2 12191  df-3 12192  df-4 12193  df-5 12194  df-6 12195  df-7 12196  df-8 12197  df-9 12198  df-n0 12385  df-z 12472  df-dec 12592  df-uz 12736  df-rp 12894  df-fz 13411  df-seq 13909  df-exp 13969  df-cj 15006  df-re 15007  df-im 15008  df-sqrt 15142  df-abs 15143  df-struct 17058  df-sets 17075  df-slot 17093  df-ndx 17105  df-base 17121  df-ress 17142  df-plusg 17174  df-mulr 17175  df-starv 17176  df-sca 17177  df-vsca 17178  df-ip 17179  df-tset 17180  df-ple 17181  df-ds 17183  df-unif 17184  df-hom 17185  df-cco 17186  df-0g 17345  df-prds 17351  df-pws 17353  df-mgm 18514  df-sgrp 18593  df-mnd 18609  df-grp 18815  df-minusg 18816  df-subg 19002  df-cmn 19661  df-abl 19662  df-mgp 20026  df-rng 20038  df-ur 20067  df-ring 20120  df-cring 20121  df-oppr 20222  df-dvdsr 20242  df-unit 20243  df-invr 20273  df-dvr 20286  df-subrng 20431  df-subrg 20455  df-drng 20616  df-field 20617  df-sra 21077  df-rgmod 21078  df-cnfld 21262  df-refld 21512  df-dsmm 21639  df-frlm 21654  df-tng 24470  df-tcph 25067  df-rrx 25283

This theorem is referenced by:  rrxnm  25289