rrxlinec - Mathbox for Alexander van der Vekens

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Theorem rrxlinec 48741

Description: The line passing through the two different points 𝑋 and 𝑌 in a generalized real Euclidean space of finite dimension, expressed by its coordinates. Remark: This proof is shorter and requires less distinct variables than the proof using rrxlinesc 48740. (Contributed by AV, 13-Feb-2023.)

**Hypotheses**
Ref	Expression
rrxlinesc.e	⊢ 𝐸 = (ℝ^‘𝐼)
rrxlinesc.p	⊢ 𝑃 = (ℝ ↑_m 𝐼)
rrxlinesc.l	⊢ 𝐿 = (Line_M‘𝐸)

**Assertion**
Ref	Expression
rrxlinec	⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → (𝑋𝐿𝑌) = {𝑝 ∈ 𝑃 ∣ ∃𝑡 ∈ ℝ ∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑡) · (𝑋‘𝑖)) + (𝑡 · (𝑌‘𝑖)))})

Distinct variable groups: 𝐸,𝑝,𝑡 𝑖,𝐼,𝑝,𝑡 𝑃,𝑖,𝑝,𝑡 𝑖,𝑋,𝑝,𝑡 𝑖,𝑌,𝑝,𝑡 Allowed substitution hints: 𝐸(𝑖) 𝐿(𝑡,𝑖,𝑝)

**Proof of Theorem rrxlinec**
Step	Hyp	Ref	Expression
1		rrxlinesc.e	. . 3 ⊢ 𝐸 = (ℝ^‘𝐼)
2		rrxlinesc.p	. . 3 ⊢ 𝑃 = (ℝ ↑_m 𝐼)
3		rrxlinesc.l	. . 3 ⊢ 𝐿 = (Line_M‘𝐸)
4		eqid 2729	. . 3 ⊢ ( ·_𝑠 ‘𝐸) = ( ·_𝑠 ‘𝐸)
5		eqid 2729	. . 3 ⊢ (+_g‘𝐸) = (+_g‘𝐸)
6	1, 2, 3, 4, 5	rrxline 48739	. 2 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → (𝑋𝐿𝑌) = {𝑝 ∈ 𝑃 ∣ ∃𝑡 ∈ ℝ 𝑝 = (((1 − 𝑡)( ·_𝑠 ‘𝐸)𝑋)(+_g‘𝐸)(𝑡( ·_𝑠 ‘𝐸)𝑌))})
7		eqid 2729	. . . . 5 ⊢ (Base‘𝐸) = (Base‘𝐸)
8		simplll 774	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝐼 ∈ Fin)
9		1red 11135	. . . . . 6 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 1 ∈ ℝ)
10		simpr 484	. . . . . 6 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝑡 ∈ ℝ)
11	9, 10	resubcld 11567	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → (1 − 𝑡) ∈ ℝ)
12		id 22	. . . . . . . . . . . 12 ⊢ (𝐼 ∈ Fin → 𝐼 ∈ Fin)
13	12, 1, 7	rrxbasefi 25327	. . . . . . . . . . 11 ⊢ (𝐼 ∈ Fin → (Base‘𝐸) = (ℝ ↑_m 𝐼))
14	2, 13	eqtr4id 2783	. . . . . . . . . 10 ⊢ (𝐼 ∈ Fin → 𝑃 = (Base‘𝐸))
15	14	eleq2d 2814	. . . . . . . . 9 ⊢ (𝐼 ∈ Fin → (𝑋 ∈ 𝑃 ↔ 𝑋 ∈ (Base‘𝐸)))
16	15	biimpcd 249	. . . . . . . 8 ⊢ (𝑋 ∈ 𝑃 → (𝐼 ∈ Fin → 𝑋 ∈ (Base‘𝐸)))
17	16	3ad2ant1 1133	. . . . . . 7 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → (𝐼 ∈ Fin → 𝑋 ∈ (Base‘𝐸)))
18	17	impcom 407	. . . . . 6 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ (Base‘𝐸))
19	18	ad2antrr 726	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝑋 ∈ (Base‘𝐸))
20	14	eleq2d 2814	. . . . . . . . 9 ⊢ (𝐼 ∈ Fin → (𝑌 ∈ 𝑃 ↔ 𝑌 ∈ (Base‘𝐸)))
21	20	biimpcd 249	. . . . . . . 8 ⊢ (𝑌 ∈ 𝑃 → (𝐼 ∈ Fin → 𝑌 ∈ (Base‘𝐸)))
22	21	3ad2ant2 1134	. . . . . . 7 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → (𝐼 ∈ Fin → 𝑌 ∈ (Base‘𝐸)))
23	22	impcom 407	. . . . . 6 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ (Base‘𝐸))
24	23	ad2antrr 726	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝑌 ∈ (Base‘𝐸))
25	14	adantr 480	. . . . . . . 8 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → 𝑃 = (Base‘𝐸))
26	25	eleq2d 2814	. . . . . . 7 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → (𝑝 ∈ 𝑃 ↔ 𝑝 ∈ (Base‘𝐸)))
27	26	biimpa 476	. . . . . 6 ⊢ (((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) → 𝑝 ∈ (Base‘𝐸))
28	27	adantr 480	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝑝 ∈ (Base‘𝐸))
29	1, 7, 4, 8, 11, 19, 24, 28, 5, 10	rrxplusgvscavalb 25312	. . . 4 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → (𝑝 = (((1 − 𝑡)( ·_𝑠 ‘𝐸)𝑋)(+_g‘𝐸)(𝑡( ·_𝑠 ‘𝐸)𝑌)) ↔ ∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑡) · (𝑋‘𝑖)) + (𝑡 · (𝑌‘𝑖)))))
30	29	rexbidva 3151	. . 3 ⊢ (((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) → (∃𝑡 ∈ ℝ 𝑝 = (((1 − 𝑡)( ·_𝑠 ‘𝐸)𝑋)(+_g‘𝐸)(𝑡( ·_𝑠 ‘𝐸)𝑌)) ↔ ∃𝑡 ∈ ℝ ∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑡) · (𝑋‘𝑖)) + (𝑡 · (𝑌‘𝑖)))))
31	30	rabbidva 3403	. 2 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → {𝑝 ∈ 𝑃 ∣ ∃𝑡 ∈ ℝ 𝑝 = (((1 − 𝑡)( ·_𝑠 ‘𝐸)𝑋)(+_g‘𝐸)(𝑡( ·_𝑠 ‘𝐸)𝑌))} = {𝑝 ∈ 𝑃 ∣ ∃𝑡 ∈ ℝ ∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑡) · (𝑋‘𝑖)) + (𝑡 · (𝑌‘𝑖)))})
32	6, 31	eqtrd 2764	1 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → (𝑋𝐿𝑌) = {𝑝 ∈ 𝑃 ∣ ∃𝑡 ∈ ℝ ∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑡) · (𝑋‘𝑖)) + (𝑡 · (𝑌‘𝑖)))})

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 ∀wral 3044 ∃wrex 3053 {crab 3396 ‘cfv 6486 (class class class)co 7353 ↑_m cmap 8760 Fincfn 8879 ℝcr 11027 1c1 11029 + caddc 11031 · cmul 11033 − cmin 11366 Basecbs 17139 +_gcplusg 17180 ·_𝑠 cvsca 17184 ℝ^crrx 25300 Line_Mcline 48732

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 5221 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 ax-cnex 11084 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 ax-pre-mulgt0 11105 ax-pre-sup 11106 ax-addf 11107 ax-mulf 11108

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 3345 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-tp 4584 df-op 4586 df-uni 4862 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5518 df-eprel 5523 df-po 5531 df-so 5532 df-fr 5576 df-we 5578 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7310 df-ov 7356 df-oprab 7357 df-mpo 7358 df-of 7617 df-om 7807 df-1st 7931 df-2nd 7932 df-supp 8101 df-tpos 8166 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-er 8632 df-map 8762 df-ixp 8832 df-en 8880 df-dom 8881 df-sdom 8882 df-fin 8883 df-fsupp 9271 df-sup 9351 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-div 11797 df-nn 12148 df-2 12210 df-3 12211 df-4 12212 df-5 12213 df-6 12214 df-7 12215 df-8 12216 df-9 12217 df-n0 12404 df-z 12491 df-dec 12611 df-uz 12755 df-rp 12913 df-fz 13430 df-seq 13928 df-exp 13988 df-cj 15025 df-re 15026 df-im 15027 df-sqrt 15161 df-abs 15162 df-struct 17077 df-sets 17094 df-slot 17112 df-ndx 17124 df-base 17140 df-ress 17161 df-plusg 17193 df-mulr 17194 df-starv 17195 df-sca 17196 df-vsca 17197 df-ip 17198 df-tset 17199 df-ple 17200 df-ds 17202 df-unif 17203 df-hom 17204 df-cco 17205 df-0g 17364 df-prds 17370 df-pws 17372 df-mgm 18533 df-sgrp 18612 df-mnd 18628 df-mhm 18676 df-grp 18834 df-minusg 18835 df-sbg 18836 df-subg 19021 df-ghm 19111 df-cmn 19680 df-abl 19681 df-mgp 20045 df-rng 20057 df-ur 20086 df-ring 20139 df-cring 20140 df-oppr 20241 df-dvdsr 20261 df-unit 20262 df-invr 20292 df-dvr 20305 df-rhm 20376 df-subrng 20450 df-subrg 20474 df-drng 20635 df-field 20636 df-staf 20743 df-srng 20744 df-lmod 20784 df-lss 20854 df-sra 21096 df-rgmod 21097 df-cnfld 21281 df-refld 21531 df-dsmm 21658 df-frlm 21673 df-tng 24489 df-tcph 25086 df-rrx 25302 df-line 48734

This theorem is referenced by: rrx2line 48745

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