rrxlinec - Mathbox for Alexander van der Vekens

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Theorem rrxlinec 47995

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 47994. (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 2725	. . 3 ⊢ ( ·_𝑠 ‘𝐸) = ( ·_𝑠 ‘𝐸)
5		eqid 2725	. . 3 ⊢ (+_g‘𝐸) = (+_g‘𝐸)
6	1, 2, 3, 4, 5	rrxline 47993	. 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 2725	. . . . 5 ⊢ (Base‘𝐸) = (Base‘𝐸)
8		simplll 773	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝐼 ∈ Fin)
9		1red 11247	. . . . . 6 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 1 ∈ ℝ)
10		simpr 483	. . . . . 6 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝑡 ∈ ℝ)
11	9, 10	resubcld 11674	. . . . 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 25382	. . . . . . . . . . 11 ⊢ (𝐼 ∈ Fin → (Base‘𝐸) = (ℝ ↑_m 𝐼))
14	2, 13	eqtr4id 2784	. . . . . . . . . 10 ⊢ (𝐼 ∈ Fin → 𝑃 = (Base‘𝐸))
15	14	eleq2d 2811	. . . . . . . . 9 ⊢ (𝐼 ∈ Fin → (𝑋 ∈ 𝑃 ↔ 𝑋 ∈ (Base‘𝐸)))
16	15	biimpcd 248	. . . . . . . 8 ⊢ (𝑋 ∈ 𝑃 → (𝐼 ∈ Fin → 𝑋 ∈ (Base‘𝐸)))
17	16	3ad2ant1 1130	. . . . . . 7 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → (𝐼 ∈ Fin → 𝑋 ∈ (Base‘𝐸)))
18	17	impcom 406	. . . . . 6 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ (Base‘𝐸))
19	18	ad2antrr 724	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝑋 ∈ (Base‘𝐸))
20	14	eleq2d 2811	. . . . . . . . 9 ⊢ (𝐼 ∈ Fin → (𝑌 ∈ 𝑃 ↔ 𝑌 ∈ (Base‘𝐸)))
21	20	biimpcd 248	. . . . . . . 8 ⊢ (𝑌 ∈ 𝑃 → (𝐼 ∈ Fin → 𝑌 ∈ (Base‘𝐸)))
22	21	3ad2ant2 1131	. . . . . . 7 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → (𝐼 ∈ Fin → 𝑌 ∈ (Base‘𝐸)))
23	22	impcom 406	. . . . . 6 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ (Base‘𝐸))
24	23	ad2antrr 724	. . . . 5 ⊢ ((((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) ∧ 𝑡 ∈ ℝ) → 𝑌 ∈ (Base‘𝐸))
25	14	adantr 479	. . . . . . . 8 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → 𝑃 = (Base‘𝐸))
26	25	eleq2d 2811	. . . . . . 7 ⊢ ((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) → (𝑝 ∈ 𝑃 ↔ 𝑝 ∈ (Base‘𝐸)))
27	26	biimpa 475	. . . . . 6 ⊢ (((𝐼 ∈ Fin ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑝 ∈ 𝑃) → 𝑝 ∈ (Base‘𝐸))
28	27	adantr 479	. . . . 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 25367	. . . 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 3166	. . 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 3425	. 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 2765	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 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2929 ∀wral 3050 ∃wrex 3059 {crab 3418 ‘cfv 6549 (class class class)co 7419 ↑_m cmap 8845 Fincfn 8964 ℝcr 11139 1c1 11141 + caddc 11143 · cmul 11145 − cmin 11476 Basecbs 17183 +_gcplusg 17236 ·_𝑠 cvsca 17240 ℝ^crrx 25355 Line_Mcline 47986

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429 ax-un 7741 ax-cnex 11196 ax-resscn 11197 ax-1cn 11198 ax-icn 11199 ax-addcl 11200 ax-addrcl 11201 ax-mulcl 11202 ax-mulrcl 11203 ax-mulcom 11204 ax-addass 11205 ax-mulass 11206 ax-distr 11207 ax-i2m1 11208 ax-1ne0 11209 ax-1rid 11210 ax-rnegex 11211 ax-rrecex 11212 ax-cnre 11213 ax-pre-lttri 11214 ax-pre-lttrn 11215 ax-pre-ltadd 11216 ax-pre-mulgt0 11217 ax-pre-sup 11218 ax-addf 11219 ax-mulf 11220

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-nel 3036 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3419 df-v 3463 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3964 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-tp 4635 df-op 4637 df-uni 4910 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6307 df-ord 6374 df-on 6375 df-lim 6376 df-suc 6377 df-iota 6501 df-fun 6551 df-fn 6552 df-f 6553 df-f1 6554 df-fo 6555 df-f1o 6556 df-fv 6557 df-riota 7375 df-ov 7422 df-oprab 7423 df-mpo 7424 df-of 7685 df-om 7872 df-1st 7994 df-2nd 7995 df-supp 8166 df-tpos 8232 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-1o 8487 df-er 8725 df-map 8847 df-ixp 8917 df-en 8965 df-dom 8966 df-sdom 8967 df-fin 8968 df-fsupp 9388 df-sup 9467 df-pnf 11282 df-mnf 11283 df-xr 11284 df-ltxr 11285 df-le 11286 df-sub 11478 df-neg 11479 df-div 11904 df-nn 12246 df-2 12308 df-3 12309 df-4 12310 df-5 12311 df-6 12312 df-7 12313 df-8 12314 df-9 12315 df-n0 12506 df-z 12592 df-dec 12711 df-uz 12856 df-rp 13010 df-fz 13520 df-seq 14003 df-exp 14063 df-cj 15082 df-re 15083 df-im 15084 df-sqrt 15218 df-abs 15219 df-struct 17119 df-sets 17136 df-slot 17154 df-ndx 17166 df-base 17184 df-ress 17213 df-plusg 17249 df-mulr 17250 df-starv 17251 df-sca 17252 df-vsca 17253 df-ip 17254 df-tset 17255 df-ple 17256 df-ds 17258 df-unif 17259 df-hom 17260 df-cco 17261 df-0g 17426 df-prds 17432 df-pws 17434 df-mgm 18603 df-sgrp 18682 df-mnd 18698 df-mhm 18743 df-grp 18901 df-minusg 18902 df-sbg 18903 df-subg 19086 df-ghm 19176 df-cmn 19749 df-abl 19750 df-mgp 20087 df-rng 20105 df-ur 20134 df-ring 20187 df-cring 20188 df-oppr 20285 df-dvdsr 20308 df-unit 20309 df-invr 20339 df-dvr 20352 df-rhm 20423 df-subrng 20495 df-subrg 20520 df-drng 20638 df-field 20639 df-staf 20737 df-srng 20738 df-lmod 20757 df-lss 20828 df-sra 21070 df-rgmod 21071 df-cnfld 21297 df-refld 21554 df-dsmm 21683 df-frlm 21698 df-tng 24537 df-tcph 25141 df-rrx 25357 df-line 47988

This theorem is referenced by: rrx2line 47999

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