Theorem sspmval 26972

Description: Vector addition on a subspace in terms of vector addition on the parent space. (Contributed by NM, 28-Jan-2008.) (New usage is discouraged.)

Hypotheses

Ref	Expression
sspm.y	⊢ 𝑌 = (BaseSet‘𝑊)
sspm.m	⊢ 𝑀 = ( −𝑣 ‘𝑈)
sspm.l	⊢ 𝐿 = ( −𝑣 ‘𝑊)
sspm.h	⊢ 𝐻 = (SubSp‘𝑈)

Assertion

Ref	Expression
sspmval	⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝐿𝐵) = (𝐴𝑀𝐵))

Proof of Theorem sspmval

Step	Hyp	Ref	Expression
1		sspm.h	. . . . . . . 8 ⊢ 𝐻 = (SubSp‘𝑈)
2	1	sspnv 26965	. . . . . . 7 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → 𝑊 ∈ NrmCVec)
3		neg1cn 11001	. . . . . . . . 9 ⊢ -1 ∈ ℂ
4		sspm.y	. . . . . . . . . 10 ⊢ 𝑌 = (BaseSet‘𝑊)
5		eqid 2610	. . . . . . . . . 10 ⊢ ( ·𝑠OLD ‘𝑊) = ( ·𝑠OLD ‘𝑊)
6	4, 5	nvscl 26865	. . . . . . . . 9 ⊢ ((𝑊 ∈ NrmCVec ∧ -1 ∈ ℂ ∧ 𝐵 ∈ 𝑌) → (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌)
7	3, 6	mp3an2 1404	. . . . . . . 8 ⊢ ((𝑊 ∈ NrmCVec ∧ 𝐵 ∈ 𝑌) → (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌)
8	7	ex 449	. . . . . . 7 ⊢ (𝑊 ∈ NrmCVec → (𝐵 ∈ 𝑌 → (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌))
9	2, 8	syl 17	. . . . . 6 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → (𝐵 ∈ 𝑌 → (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌))
10	9	anim2d 587	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → ((𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌) → (𝐴 ∈ 𝑌 ∧ (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌)))
11	10	imp 444	. . . 4 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴 ∈ 𝑌 ∧ (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌))
12		eqid 2610	. . . . 5 ⊢ ( +𝑣 ‘𝑈) = ( +𝑣 ‘𝑈)
13		eqid 2610	. . . . 5 ⊢ ( +𝑣 ‘𝑊) = ( +𝑣 ‘𝑊)
14	4, 12, 13, 1	sspgval 26968	. . . 4 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌)) → (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑊)𝐵)))
15	11, 14	syldan 486	. . 3 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑊)𝐵)))
16		eqid 2610	. . . . . . 7 ⊢ ( ·𝑠OLD ‘𝑈) = ( ·𝑠OLD ‘𝑈)
17	4, 16, 5, 1	sspsval 26970	. . . . . 6 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (-1 ∈ ℂ ∧ 𝐵 ∈ 𝑌)) → (-1( ·𝑠OLD ‘𝑊)𝐵) = (-1( ·𝑠OLD ‘𝑈)𝐵))
18	3, 17	mpanr1 715	. . . . 5 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ 𝐵 ∈ 𝑌) → (-1( ·𝑠OLD ‘𝑊)𝐵) = (-1( ·𝑠OLD ‘𝑈)𝐵))
19	18	adantrl 748	. . . 4 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (-1( ·𝑠OLD ‘𝑊)𝐵) = (-1( ·𝑠OLD ‘𝑈)𝐵))
20	19	oveq2d 6565	. . 3 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑊)𝐵)) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
21	15, 20	eqtrd 2644	. 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
22		sspm.l	. . . . 5 ⊢ 𝐿 = ( −𝑣 ‘𝑊)
23	4, 13, 5, 22	nvmval 26881	. . . 4 ⊢ ((𝑊 ∈ NrmCVec ∧ 𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌) → (𝐴𝐿𝐵) = (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)))
24	23	3expb 1258	. . 3 ⊢ ((𝑊 ∈ NrmCVec ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝐿𝐵) = (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)))
25	2, 24	sylan 487	. 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝐿𝐵) = (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)))
26		eqid 2610	. . . . . . 7 ⊢ (BaseSet‘𝑈) = (BaseSet‘𝑈)
27	26, 4, 1	sspba 26966	. . . . . 6 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → 𝑌 ⊆ (BaseSet‘𝑈))
28	27	sseld 3567	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → (𝐴 ∈ 𝑌 → 𝐴 ∈ (BaseSet‘𝑈)))
29	27	sseld 3567	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → (𝐵 ∈ 𝑌 → 𝐵 ∈ (BaseSet‘𝑈)))
30	28, 29	anim12d 584	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → ((𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌) → (𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈))))
31	30	imp 444	. . 3 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈)))
32		sspm.m	. . . . . 6 ⊢ 𝑀 = ( −𝑣 ‘𝑈)
33	26, 12, 16, 32	nvmval 26881	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈)) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
34	33	3expb 1258	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ (𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈))) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
35	34	adantlr 747	. . 3 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈))) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
36	31, 35	syldan 486	. 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
37	21, 25, 36	3eqtr4d 2654	1 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝐿𝐵) = (𝐴𝑀𝐵))

Syntax hints:   → wi 4   ∧ wa 383   = wceq 1475   ∈ wcel 1977  ‘cfv 5804  (class class class)co 6549  ℂcc 9813  1c1 9816  -cneg 10146  NrmCVeccnv 26823   +_𝑣 cpv 26824  BaseSetcba 26825   ·_𝑠OLD cns 26826   −_𝑣 cnsb 26828  SubSpcss 26960

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-po 4959  df-so 4960  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-1st 7059  df-2nd 7060  df-er 7629  df-en 7842  df-dom 7843  df-sdom 7844  df-pnf 9955  df-mnf 9956  df-ltxr 9958  df-sub 10147  df-neg 10148  df-grpo 26731  df-gid 26732  df-ginv 26733  df-gdiv 26734  df-ablo 26783  df-vc 26798  df-nv 26831  df-va 26834  df-ba 26835  df-sm 26836  df-0v 26837  df-vs 26838  df-nmcv 26839  df-ssp 26961

This theorem is referenced by:  sspm  26973  sspz  26974  sspimsval  26977  sspph  27094