rrxdsfi - Metamath Proof Explorer

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Theorem rrxdsfi 24480

Description: The distance over generalized Euclidean spaces. Finite dimensional case. (Contributed by Glauco Siliprandi, 24-Dec-2020.)

**Hypotheses**
Ref	Expression
rrxdsfi.h	⊢ 𝐻 = (ℝ^‘𝐼)
rrxdsfi.b	⊢ 𝐵 = (ℝ ↑_m 𝐼)

**Assertion**
Ref	Expression
rrxdsfi	⊢ (𝐼 ∈ Fin → (dist‘𝐻) = (𝑓 ∈ 𝐵, 𝑔 ∈ 𝐵 ↦ (√‘Σ𝑘 ∈ 𝐼 (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))))

Distinct variable groups: 𝐵,𝑘 𝑓,𝐻,𝑔,𝑘 𝑓,𝐼,𝑔,𝑘 Allowed substitution hints: 𝐵(𝑓,𝑔)

**Proof of Theorem rrxdsfi**
Step	Hyp	Ref	Expression
1		rrxdsfi.b	. . . 4 ⊢ 𝐵 = (ℝ ↑_m 𝐼)
2		id 22	. . . . 5 ⊢ (𝐼 ∈ Fin → 𝐼 ∈ Fin)
3		rrxdsfi.h	. . . . 5 ⊢ 𝐻 = (ℝ^‘𝐼)
4		eqid 2738	. . . . 5 ⊢ (Base‘𝐻) = (Base‘𝐻)
5	2, 3, 4	rrxbasefi 24479	. . . 4 ⊢ (𝐼 ∈ Fin → (Base‘𝐻) = (ℝ ↑_m 𝐼))
6	1, 5	eqtr4id 2798	. . 3 ⊢ (𝐼 ∈ Fin → 𝐵 = (Base‘𝐻))
7	6	adantr 480	. . 3 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵) → 𝐵 = (Base‘𝐻))
8		df-refld 20722	. . . . . . 7 ⊢ ℝ_fld = (ℂ_fld ↾_s ℝ)
9	8	oveq1i 7265	. . . . . 6 ⊢ (ℝ_fld Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))) = ((ℂ_fld ↾_s ℝ) Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2)))
10		simp1 1134	. . . . . . 7 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → 𝐼 ∈ Fin)
11		simpr 484	. . . . . . . . . . . . 13 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵) → 𝑓 ∈ 𝐵)
12	11, 1	eleqtrdi 2849	. . . . . . . . . . . 12 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵) → 𝑓 ∈ (ℝ ↑_m 𝐼))
13	12	3adant3 1130	. . . . . . . . . . 11 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → 𝑓 ∈ (ℝ ↑_m 𝐼))
14		elmapi 8595	. . . . . . . . . . 11 ⊢ (𝑓 ∈ (ℝ ↑_m 𝐼) → 𝑓:𝐼⟶ℝ)
15	13, 14	syl 17	. . . . . . . . . 10 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → 𝑓:𝐼⟶ℝ)
16	15	ffvelrnda 6943	. . . . . . . . 9 ⊢ (((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) ∧ 𝑘 ∈ 𝐼) → (𝑓‘𝑘) ∈ ℝ)
17		simpr 484	. . . . . . . . . . . . 13 ⊢ ((𝐼 ∈ Fin ∧ 𝑔 ∈ 𝐵) → 𝑔 ∈ 𝐵)
18	17, 1	eleqtrdi 2849	. . . . . . . . . . . 12 ⊢ ((𝐼 ∈ Fin ∧ 𝑔 ∈ 𝐵) → 𝑔 ∈ (ℝ ↑_m 𝐼))
19	18	3adant2 1129	. . . . . . . . . . 11 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → 𝑔 ∈ (ℝ ↑_m 𝐼))
20		elmapi 8595	. . . . . . . . . . 11 ⊢ (𝑔 ∈ (ℝ ↑_m 𝐼) → 𝑔:𝐼⟶ℝ)
21	19, 20	syl 17	. . . . . . . . . 10 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → 𝑔:𝐼⟶ℝ)
22	21	ffvelrnda 6943	. . . . . . . . 9 ⊢ (((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) ∧ 𝑘 ∈ 𝐼) → (𝑔‘𝑘) ∈ ℝ)
23	16, 22	resubcld 11333	. . . . . . . 8 ⊢ (((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) ∧ 𝑘 ∈ 𝐼) → ((𝑓‘𝑘) − (𝑔‘𝑘)) ∈ ℝ)
24	23	resqcld 13893	. . . . . . 7 ⊢ (((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) ∧ 𝑘 ∈ 𝐼) → (((𝑓‘𝑘) − (𝑔‘𝑘))↑2) ∈ ℝ)
25	10, 24	regsumfsum 20578	. . . . . 6 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → ((ℂ_fld ↾_s ℝ) Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))) = Σ𝑘 ∈ 𝐼 (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))
26	9, 25	eqtr2id 2792	. . . . 5 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → Σ𝑘 ∈ 𝐼 (((𝑓‘𝑘) − (𝑔‘𝑘))↑2) = (ℝ_fld Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))))
27	26	fveq2d 6760	. . . 4 ⊢ ((𝐼 ∈ Fin ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → (√‘Σ𝑘 ∈ 𝐼 (((𝑓‘𝑘) − (𝑔‘𝑘))↑2)) = (√‘(ℝ_fld Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2)))))
28	27	3expb 1118	. . 3 ⊢ ((𝐼 ∈ Fin ∧ (𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (√‘Σ𝑘 ∈ 𝐼 (((𝑓‘𝑘) − (𝑔‘𝑘))↑2)) = (√‘(ℝ_fld Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2)))))
29	6, 7, 28	mpoeq123dva 7327	. 2 ⊢ (𝐼 ∈ Fin → (𝑓 ∈ 𝐵, 𝑔 ∈ 𝐵 ↦ (√‘Σ𝑘 ∈ 𝐼 (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))) = (𝑓 ∈ (Base‘𝐻), 𝑔 ∈ (Base‘𝐻) ↦ (√‘(ℝ_fld Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))))))
30	3, 4	rrxds 24462	. 2 ⊢ (𝐼 ∈ Fin → (𝑓 ∈ (Base‘𝐻), 𝑔 ∈ (Base‘𝐻) ↦ (√‘(ℝ_fld Σ_g (𝑘 ∈ 𝐼 ↦ (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))))) = (dist‘𝐻))
31	29, 30	eqtr2d 2779	1 ⊢ (𝐼 ∈ Fin → (dist‘𝐻) = (𝑓 ∈ 𝐵, 𝑔 ∈ 𝐵 ↦ (√‘Σ𝑘 ∈ 𝐼 (((𝑓‘𝑘) − (𝑔‘𝑘))↑2))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ↦ cmpt 5153 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ∈ cmpo 7257 ↑_m cmap 8573 Fincfn 8691 ℝcr 10801 − cmin 11135 2c2 11958 ↑cexp 13710 √csqrt 14872 Σcsu 15325 Basecbs 16840 ↾_s cress 16867 distcds 16897 Σ_g cgsu 17068 ℂ_fldccnfld 20510 ℝ_fldcrefld 20721 ℝ^crrx 24452

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 ax-addf 10881 ax-mulf 10882

This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-om 7688 df-1st 7804 df-2nd 7805 df-supp 7949 df-tpos 8013 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-map 8575 df-ixp 8644 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-fsupp 9059 df-sup 9131 df-oi 9199 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-z 12250 df-dec 12367 df-uz 12512 df-rp 12660 df-fz 13169 df-fzo 13312 df-seq 13650 df-exp 13711 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-clim 15125 df-sum 15326 df-struct 16776 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-ress 16868 df-plusg 16901 df-mulr 16902 df-starv 16903 df-sca 16904 df-vsca 16905 df-ip 16906 df-tset 16907 df-ple 16908 df-ds 16910 df-unif 16911 df-hom 16912 df-cco 16913 df-0g 17069 df-gsum 17070 df-prds 17075 df-pws 17077 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-mhm 18345 df-grp 18495 df-minusg 18496 df-sbg 18497 df-subg 18667 df-ghm 18747 df-cntz 18838 df-cmn 19303 df-abl 19304 df-mgp 19636 df-ur 19653 df-ring 19700 df-cring 19701 df-oppr 19777 df-dvdsr 19798 df-unit 19799 df-invr 19829 df-dvr 19840 df-rnghom 19874 df-drng 19908 df-field 19909 df-subrg 19937 df-staf 20020 df-srng 20021 df-lmod 20040 df-lss 20109 df-sra 20349 df-rgmod 20350 df-cnfld 20511 df-refld 20722 df-dsmm 20849 df-frlm 20864 df-nm 23644 df-tng 23646 df-tcph 24238 df-rrx 24454

This theorem is referenced by: rrxdsfival 24482 ehleudis 24487 rrndistlt 43721 qndenserrnopnlem 43728 rrndsmet 43733 ioorrnopnlem 43735 hoiqssbllem2 44051

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