prjspnvs - Mathbox for Steven Nguyen

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Theorem prjspnvs 42608

Description: A nonzero multiple of a vector is equivalent to the vector. This converts the equivalence relation used in prjspvs 42598 (see prjspnerlem 42605). (Contributed by SN, 8-Aug-2024.)

**Hypotheses**
Ref	Expression
prjspnvs.e	⊢ ∼ = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ 𝑆 𝑥 = (𝑙 · 𝑦))}
prjspnvs.w	⊢ 𝑊 = (𝐾 freeLMod (0...𝑁))
prjspnvs.b	⊢ 𝐵 = ((Base‘𝑊) ∖ {(0_g‘𝑊)})
prjspnvs.s	⊢ 𝑆 = (Base‘𝐾)
prjspnvs.x	⊢ · = ( ·_𝑠 ‘𝑊)
prjspnvs.0	⊢ 0 = (0_g‘𝐾)
prjspnvs.k	⊢ (𝜑 → 𝐾 ∈ DivRing)
prjspnvs.1	⊢ (𝜑 → 𝑋 ∈ 𝐵)
prjspnvs.2	⊢ (𝜑 → 𝐶 ∈ 𝑆)
prjspnvs.3	⊢ (𝜑 → 𝐶 ≠ 0 )

**Assertion**
Ref	Expression
prjspnvs	⊢ (𝜑 → (𝐶 · 𝑋) ∼ 𝑋)

Distinct variable groups: 𝑊,𝑙,𝑥,𝑦 𝑥,𝐵,𝑦 𝑆,𝑙 · ,𝑙,𝑥,𝑦 𝑥,𝐾,𝑦 𝑋,𝑙,𝑥,𝑦 𝐶,𝑙,𝑥,𝑦 Allowed substitution hints: 𝜑(𝑥,𝑦,𝑙) 𝐵(𝑙) ∼ (𝑥,𝑦,𝑙) 𝑆(𝑥,𝑦) 𝐾(𝑙) 𝑁(𝑥,𝑦,𝑙) 0 (𝑥,𝑦,𝑙)

**Proof of Theorem prjspnvs**
Step	Hyp	Ref	Expression
1		prjspnvs.k	. . . 4 ⊢ (𝜑 → 𝐾 ∈ DivRing)
2		ovexd 7422	. . . 4 ⊢ (𝜑 → (0...𝑁) ∈ V)
3		prjspnvs.w	. . . . 5 ⊢ 𝑊 = (𝐾 freeLMod (0...𝑁))
4	3	frlmlvec 21670	. . . 4 ⊢ ((𝐾 ∈ DivRing ∧ (0...𝑁) ∈ V) → 𝑊 ∈ LVec)
5	1, 2, 4	syl2anc 584	. . 3 ⊢ (𝜑 → 𝑊 ∈ LVec)
6		prjspnvs.1	. . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
7		prjspnvs.2	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ 𝑆)
8		prjspnvs.3	. . . . . 6 ⊢ (𝜑 → 𝐶 ≠ 0 )
9		nelsn 4630	. . . . . 6 ⊢ (𝐶 ≠ 0 → ¬ 𝐶 ∈ { 0 })
10	8, 9	syl 17	. . . . 5 ⊢ (𝜑 → ¬ 𝐶 ∈ { 0 })
11	7, 10	eldifd 3925	. . . 4 ⊢ (𝜑 → 𝐶 ∈ (𝑆 ∖ { 0 }))
12		prjspnvs.s	. . . . . 6 ⊢ 𝑆 = (Base‘𝐾)
13	3	frlmsca 21662	. . . . . . . 8 ⊢ ((𝐾 ∈ DivRing ∧ (0...𝑁) ∈ V) → 𝐾 = (Scalar‘𝑊))
14	1, 2, 13	syl2anc 584	. . . . . . 7 ⊢ (𝜑 → 𝐾 = (Scalar‘𝑊))
15	14	fveq2d 6862	. . . . . 6 ⊢ (𝜑 → (Base‘𝐾) = (Base‘(Scalar‘𝑊)))
16	12, 15	eqtrid 2776	. . . . 5 ⊢ (𝜑 → 𝑆 = (Base‘(Scalar‘𝑊)))
17		prjspnvs.0	. . . . . . 7 ⊢ 0 = (0_g‘𝐾)
18	14	fveq2d 6862	. . . . . . 7 ⊢ (𝜑 → (0_g‘𝐾) = (0_g‘(Scalar‘𝑊)))
19	17, 18	eqtrid 2776	. . . . . 6 ⊢ (𝜑 → 0 = (0_g‘(Scalar‘𝑊)))
20	19	sneqd 4601	. . . . 5 ⊢ (𝜑 → { 0 } = {(0_g‘(Scalar‘𝑊))})
21	16, 20	difeq12d 4090	. . . 4 ⊢ (𝜑 → (𝑆 ∖ { 0 }) = ((Base‘(Scalar‘𝑊)) ∖ {(0_g‘(Scalar‘𝑊))}))
22	11, 21	eleqtrd 2830	. . 3 ⊢ (𝜑 → 𝐶 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0_g‘(Scalar‘𝑊))}))
23		eqid 2729	. . . 4 ⊢ {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ (Base‘(Scalar‘𝑊))𝑥 = (𝑙 · 𝑦))} = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ (Base‘(Scalar‘𝑊))𝑥 = (𝑙 · 𝑦))}
24		prjspnvs.b	. . . 4 ⊢ 𝐵 = ((Base‘𝑊) ∖ {(0_g‘𝑊)})
25		eqid 2729	. . . 4 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
26		prjspnvs.x	. . . 4 ⊢ · = ( ·_𝑠 ‘𝑊)
27		eqid 2729	. . . 4 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
28		eqid 2729	. . . 4 ⊢ (0_g‘(Scalar‘𝑊)) = (0_g‘(Scalar‘𝑊))
29	23, 24, 25, 26, 27, 28	prjspvs 42598	. . 3 ⊢ ((𝑊 ∈ LVec ∧ 𝑋 ∈ 𝐵 ∧ 𝐶 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0_g‘(Scalar‘𝑊))})) → (𝐶 · 𝑋){⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ (Base‘(Scalar‘𝑊))𝑥 = (𝑙 · 𝑦))}𝑋)
30	5, 6, 22, 29	syl3anc 1373	. 2 ⊢ (𝜑 → (𝐶 · 𝑋){⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ (Base‘(Scalar‘𝑊))𝑥 = (𝑙 · 𝑦))}𝑋)
31		prjspnvs.e	. . . . 5 ⊢ ∼ = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ 𝑆 𝑥 = (𝑙 · 𝑦))}
32	31, 3, 24, 12, 26	prjspnerlem 42605	. . . 4 ⊢ (𝐾 ∈ DivRing → ∼ = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ (Base‘(Scalar‘𝑊))𝑥 = (𝑙 · 𝑦))})
33	1, 32	syl 17	. . 3 ⊢ (𝜑 → ∼ = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ (Base‘(Scalar‘𝑊))𝑥 = (𝑙 · 𝑦))})
34	33	breqd 5118	. 2 ⊢ (𝜑 → ((𝐶 · 𝑋) ∼ 𝑋 ↔ (𝐶 · 𝑋){⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ ∃𝑙 ∈ (Base‘(Scalar‘𝑊))𝑥 = (𝑙 · 𝑦))}𝑋))
35	30, 34	mpbird 257	1 ⊢ (𝜑 → (𝐶 · 𝑋) ∼ 𝑋)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 ∃wrex 3053 Vcvv 3447 ∖ cdif 3911 {csn 4589 class class class wbr 5107 {copab 5169 ‘cfv 6511 (class class class)co 7387 0cc0 11068 ...cfz 13468 Basecbs 17179 Scalarcsca 17223 ·_𝑠 cvsca 17224 0_gc0g 17402 DivRingcdr 20638 LVecclvec 21009 freeLMod cfrlm 21655

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 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145

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 3354 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-tp 4594 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-1st 7968 df-2nd 7969 df-tpos 8205 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-1o 8434 df-er 8671 df-map 8801 df-ixp 8871 df-en 8919 df-dom 8920 df-sdom 8921 df-fin 8922 df-sup 9393 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-2 12249 df-3 12250 df-4 12251 df-5 12252 df-6 12253 df-7 12254 df-8 12255 df-9 12256 df-n0 12443 df-z 12530 df-dec 12650 df-uz 12794 df-fz 13469 df-struct 17117 df-sets 17134 df-slot 17152 df-ndx 17164 df-base 17180 df-ress 17201 df-plusg 17233 df-mulr 17234 df-sca 17236 df-vsca 17237 df-ip 17238 df-tset 17239 df-ple 17240 df-ds 17242 df-hom 17244 df-cco 17245 df-0g 17404 df-prds 17410 df-pws 17412 df-mgm 18567 df-sgrp 18646 df-mnd 18662 df-grp 18868 df-minusg 18869 df-sbg 18870 df-subg 19055 df-cmn 19712 df-abl 19713 df-mgp 20050 df-rng 20062 df-ur 20091 df-ring 20144 df-oppr 20246 df-dvdsr 20266 df-unit 20267 df-invr 20297 df-subrg 20479 df-drng 20640 df-lmod 20768 df-lss 20838 df-lvec 21010 df-sra 21080 df-rgmod 21081 df-dsmm 21641 df-frlm 21656

This theorem is referenced by: prjspner01 42613

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