prjspnvs - Mathbox for Steven Nguyen

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Theorem prjspnvs 42884

Description: A nonzero multiple of a vector is equivalent to the vector. This converts the equivalence relation used in prjspvs 42874 (see prjspnerlem 42881). (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 7393	. . . 4 ⊢ (𝜑 → (0...𝑁) ∈ V)
3		prjspnvs.w	. . . . 5 ⊢ 𝑊 = (𝐾 freeLMod (0...𝑁))
4	3	frlmlvec 21718	. . . 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 4623	. . . . . 6 ⊢ (𝐶 ≠ 0 → ¬ 𝐶 ∈ { 0 })
10	8, 9	syl 17	. . . . 5 ⊢ (𝜑 → ¬ 𝐶 ∈ { 0 })
11	7, 10	eldifd 3912	. . . 4 ⊢ (𝜑 → 𝐶 ∈ (𝑆 ∖ { 0 }))
12		prjspnvs.s	. . . . . 6 ⊢ 𝑆 = (Base‘𝐾)
13	3	frlmsca 21710	. . . . . . . 8 ⊢ ((𝐾 ∈ DivRing ∧ (0...𝑁) ∈ V) → 𝐾 = (Scalar‘𝑊))
14	1, 2, 13	syl2anc 584	. . . . . . 7 ⊢ (𝜑 → 𝐾 = (Scalar‘𝑊))
15	14	fveq2d 6838	. . . . . 6 ⊢ (𝜑 → (Base‘𝐾) = (Base‘(Scalar‘𝑊)))
16	12, 15	eqtrid 2783	. . . . 5 ⊢ (𝜑 → 𝑆 = (Base‘(Scalar‘𝑊)))
17		prjspnvs.0	. . . . . . 7 ⊢ 0 = (0_g‘𝐾)
18	14	fveq2d 6838	. . . . . . 7 ⊢ (𝜑 → (0_g‘𝐾) = (0_g‘(Scalar‘𝑊)))
19	17, 18	eqtrid 2783	. . . . . 6 ⊢ (𝜑 → 0 = (0_g‘(Scalar‘𝑊)))
20	19	sneqd 4592	. . . . 5 ⊢ (𝜑 → { 0 } = {(0_g‘(Scalar‘𝑊))})
21	16, 20	difeq12d 4079	. . . 4 ⊢ (𝜑 → (𝑆 ∖ { 0 }) = ((Base‘(Scalar‘𝑊)) ∖ {(0_g‘(Scalar‘𝑊))}))
22	11, 21	eleqtrd 2838	. . 3 ⊢ (𝜑 → 𝐶 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0_g‘(Scalar‘𝑊))}))
23		eqid 2736	. . . 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 2736	. . . 4 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
26		prjspnvs.x	. . . 4 ⊢ · = ( ·_𝑠 ‘𝑊)
27		eqid 2736	. . . 4 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
28		eqid 2736	. . . 4 ⊢ (0_g‘(Scalar‘𝑊)) = (0_g‘(Scalar‘𝑊))
29	23, 24, 25, 26, 27, 28	prjspvs 42874	. . 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 42881	. . . 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 5109	. 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 1541 ∈ wcel 2113 ≠ wne 2932 ∃wrex 3060 Vcvv 3440 ∖ cdif 3898 {csn 4580 class class class wbr 5098 {copab 5160 ‘cfv 6492 (class class class)co 7358 0cc0 11028 ...cfz 13425 Basecbs 17138 Scalarcsca 17182 ·_𝑠 cvsca 17183 0_gc0g 17361 DivRingcdr 20664 LVecclvec 21056 freeLMod cfrlm 21703

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 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

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-tp 4585 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-tpos 8168 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-er 8635 df-map 8767 df-ixp 8838 df-en 8886 df-dom 8887 df-sdom 8888 df-fin 8889 df-sup 9347 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 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 12610 df-uz 12754 df-fz 13426 df-struct 17076 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17139 df-ress 17160 df-plusg 17192 df-mulr 17193 df-sca 17195 df-vsca 17196 df-ip 17197 df-tset 17198 df-ple 17199 df-ds 17201 df-hom 17203 df-cco 17204 df-0g 17363 df-prds 17369 df-pws 17371 df-mgm 18567 df-sgrp 18646 df-mnd 18662 df-grp 18868 df-minusg 18869 df-sbg 18870 df-subg 19055 df-cmn 19713 df-abl 19714 df-mgp 20078 df-rng 20090 df-ur 20119 df-ring 20172 df-oppr 20275 df-dvdsr 20295 df-unit 20296 df-invr 20326 df-subrg 20505 df-drng 20666 df-lmod 20815 df-lss 20885 df-lvec 21057 df-sra 21127 df-rgmod 21128 df-dsmm 21689 df-frlm 21704

This theorem is referenced by: prjspner01 42889

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