prjspnvs - Mathbox for Steven Nguyen

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Theorem prjspnvs 42805

Description: A nonzero multiple of a vector is equivalent to the vector. This converts the equivalence relation used in prjspvs 42795 (see prjspnerlem 42802). (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 7391	. . . 4 ⊢ (𝜑 → (0...𝑁) ∈ V)
3		prjspnvs.w	. . . . 5 ⊢ 𝑊 = (𝐾 freeLMod (0...𝑁))
4	3	frlmlvec 21714	. . . 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 4621	. . . . . 6 ⊢ (𝐶 ≠ 0 → ¬ 𝐶 ∈ { 0 })
10	8, 9	syl 17	. . . . 5 ⊢ (𝜑 → ¬ 𝐶 ∈ { 0 })
11	7, 10	eldifd 3910	. . . 4 ⊢ (𝜑 → 𝐶 ∈ (𝑆 ∖ { 0 }))
12		prjspnvs.s	. . . . . 6 ⊢ 𝑆 = (Base‘𝐾)
13	3	frlmsca 21706	. . . . . . . 8 ⊢ ((𝐾 ∈ DivRing ∧ (0...𝑁) ∈ V) → 𝐾 = (Scalar‘𝑊))
14	1, 2, 13	syl2anc 584	. . . . . . 7 ⊢ (𝜑 → 𝐾 = (Scalar‘𝑊))
15	14	fveq2d 6836	. . . . . 6 ⊢ (𝜑 → (Base‘𝐾) = (Base‘(Scalar‘𝑊)))
16	12, 15	eqtrid 2781	. . . . 5 ⊢ (𝜑 → 𝑆 = (Base‘(Scalar‘𝑊)))
17		prjspnvs.0	. . . . . . 7 ⊢ 0 = (0_g‘𝐾)
18	14	fveq2d 6836	. . . . . . 7 ⊢ (𝜑 → (0_g‘𝐾) = (0_g‘(Scalar‘𝑊)))
19	17, 18	eqtrid 2781	. . . . . 6 ⊢ (𝜑 → 0 = (0_g‘(Scalar‘𝑊)))
20	19	sneqd 4590	. . . . 5 ⊢ (𝜑 → { 0 } = {(0_g‘(Scalar‘𝑊))})
21	16, 20	difeq12d 4077	. . . 4 ⊢ (𝜑 → (𝑆 ∖ { 0 }) = ((Base‘(Scalar‘𝑊)) ∖ {(0_g‘(Scalar‘𝑊))}))
22	11, 21	eleqtrd 2836	. . 3 ⊢ (𝜑 → 𝐶 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0_g‘(Scalar‘𝑊))}))
23		eqid 2734	. . . 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 2734	. . . 4 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
26		prjspnvs.x	. . . 4 ⊢ · = ( ·_𝑠 ‘𝑊)
27		eqid 2734	. . . 4 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
28		eqid 2734	. . . 4 ⊢ (0_g‘(Scalar‘𝑊)) = (0_g‘(Scalar‘𝑊))
29	23, 24, 25, 26, 27, 28	prjspvs 42795	. . 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 42802	. . . 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 5107	. 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 2930 ∃wrex 3058 Vcvv 3438 ∖ cdif 3896 {csn 4578 class class class wbr 5096 {copab 5158 ‘cfv 6490 (class class class)co 7356 0cc0 11024 ...cfz 13421 Basecbs 17134 Scalarcsca 17178 ·_𝑠 cvsca 17179 0_gc0g 17357 DivRingcdr 20660 LVecclvec 21052 freeLMod cfrlm 21699

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 2182 ax-ext 2706 ax-rep 5222 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-cnex 11080 ax-resscn 11081 ax-1cn 11082 ax-icn 11083 ax-addcl 11084 ax-addrcl 11085 ax-mulcl 11086 ax-mulrcl 11087 ax-mulcom 11088 ax-addass 11089 ax-mulass 11090 ax-distr 11091 ax-i2m1 11092 ax-1ne0 11093 ax-1rid 11094 ax-rnegex 11095 ax-rrecex 11096 ax-cnre 11097 ax-pre-lttri 11098 ax-pre-lttrn 11099 ax-pre-ltadd 11100 ax-pre-mulgt0 11101

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 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-rmo 3348 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-tp 4583 df-op 4585 df-uni 4862 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-tpos 8166 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-er 8633 df-map 8763 df-ixp 8834 df-en 8882 df-dom 8883 df-sdom 8884 df-fin 8885 df-sup 9343 df-pnf 11166 df-mnf 11167 df-xr 11168 df-ltxr 11169 df-le 11170 df-sub 11364 df-neg 11365 df-nn 12144 df-2 12206 df-3 12207 df-4 12208 df-5 12209 df-6 12210 df-7 12211 df-8 12212 df-9 12213 df-n0 12400 df-z 12487 df-dec 12606 df-uz 12750 df-fz 13422 df-struct 17072 df-sets 17089 df-slot 17107 df-ndx 17119 df-base 17135 df-ress 17156 df-plusg 17188 df-mulr 17189 df-sca 17191 df-vsca 17192 df-ip 17193 df-tset 17194 df-ple 17195 df-ds 17197 df-hom 17199 df-cco 17200 df-0g 17359 df-prds 17365 df-pws 17367 df-mgm 18563 df-sgrp 18642 df-mnd 18658 df-grp 18864 df-minusg 18865 df-sbg 18866 df-subg 19051 df-cmn 19709 df-abl 19710 df-mgp 20074 df-rng 20086 df-ur 20115 df-ring 20168 df-oppr 20271 df-dvdsr 20291 df-unit 20292 df-invr 20322 df-subrg 20501 df-drng 20662 df-lmod 20811 df-lss 20881 df-lvec 21053 df-sra 21123 df-rgmod 21124 df-dsmm 21685 df-frlm 21700

This theorem is referenced by: prjspner01 42810

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