Theorem sspmval 28510

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 28503	. . . . . . 7 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → 𝑊 ∈ NrmCVec)
3		neg1cn 11752	. . . . . . . . 9 ⊢ -1 ∈ ℂ
4		sspm.y	. . . . . . . . . 10 ⊢ 𝑌 = (BaseSet‘𝑊)
5		eqid 2821	. . . . . . . . . 10 ⊢ ( ·𝑠OLD ‘𝑊) = ( ·𝑠OLD ‘𝑊)
6	4, 5	nvscl 28403	. . . . . . . . 9 ⊢ ((𝑊 ∈ NrmCVec ∧ -1 ∈ ℂ ∧ 𝐵 ∈ 𝑌) → (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌)
7	3, 6	mp3an2 1445	. . . . . . . 8 ⊢ ((𝑊 ∈ NrmCVec ∧ 𝐵 ∈ 𝑌) → (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌)
8	7	ex 415	. . . . . . 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 613	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → ((𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌) → (𝐴 ∈ 𝑌 ∧ (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌)))
11	10	imp 409	. . . 4 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴 ∈ 𝑌 ∧ (-1( ·𝑠OLD ‘𝑊)𝐵) ∈ 𝑌))
12		eqid 2821	. . . . 5 ⊢ ( +𝑣 ‘𝑈) = ( +𝑣 ‘𝑈)
13		eqid 2821	. . . . 5 ⊢ ( +𝑣 ‘𝑊) = ( +𝑣 ‘𝑊)
14	4, 12, 13, 1	sspgval 28506	. . . 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 593	. . 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 2821	. . . . . . 7 ⊢ ( ·𝑠OLD ‘𝑈) = ( ·𝑠OLD ‘𝑈)
17	4, 16, 5, 1	sspsval 28508	. . . . . 6 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (-1 ∈ ℂ ∧ 𝐵 ∈ 𝑌)) → (-1( ·𝑠OLD ‘𝑊)𝐵) = (-1( ·𝑠OLD ‘𝑈)𝐵))
18	3, 17	mpanr1 701	. . . . 5 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ 𝐵 ∈ 𝑌) → (-1( ·𝑠OLD ‘𝑊)𝐵) = (-1( ·𝑠OLD ‘𝑈)𝐵))
19	18	adantrl 714	. . . 4 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (-1( ·𝑠OLD ‘𝑊)𝐵) = (-1( ·𝑠OLD ‘𝑈)𝐵))
20	19	oveq2d 7172	. . 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 2856	. 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 28419	. . . 4 ⊢ ((𝑊 ∈ NrmCVec ∧ 𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌) → (𝐴𝐿𝐵) = (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)))
24	23	3expb 1116	. . 3 ⊢ ((𝑊 ∈ NrmCVec ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝐿𝐵) = (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)))
25	2, 24	sylan 582	. 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝐿𝐵) = (𝐴( +𝑣 ‘𝑊)(-1( ·𝑠OLD ‘𝑊)𝐵)))
26		eqid 2821	. . . . . . 7 ⊢ (BaseSet‘𝑈) = (BaseSet‘𝑈)
27	26, 4, 1	sspba 28504	. . . . . 6 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → 𝑌 ⊆ (BaseSet‘𝑈))
28	27	sseld 3966	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → (𝐴 ∈ 𝑌 → 𝐴 ∈ (BaseSet‘𝑈)))
29	27	sseld 3966	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → (𝐵 ∈ 𝑌 → 𝐵 ∈ (BaseSet‘𝑈)))
30	28, 29	anim12d 610	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → ((𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌) → (𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈))))
31	30	imp 409	. . 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 28419	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈)) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
34	33	3expb 1116	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ (𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈))) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
35	34	adantlr 713	. . 3 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ (BaseSet‘𝑈) ∧ 𝐵 ∈ (BaseSet‘𝑈))) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
36	31, 35	syldan 593	. 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝑀𝐵) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝐵)))
37	21, 25, 36	3eqtr4d 2866	1 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝐴 ∈ 𝑌 ∧ 𝐵 ∈ 𝑌)) → (𝐴𝐿𝐵) = (𝐴𝑀𝐵))

Syntax hints:   → wi 4   ∧ wa 398   = wceq 1537   ∈ wcel 2114  ‘cfv 6355  (class class class)co 7156  ℂcc 10535  1c1 10538  -cneg 10871  NrmCVeccnv 28361   +_𝑣 cpv 28362  BaseSetcba 28363   ·_𝑠OLD cns 28364   −_𝑣 cnsb 28366  SubSpcss 28498

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 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-rep 5190  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461  ax-resscn 10594  ax-1cn 10595  ax-icn 10596  ax-addcl 10597  ax-addrcl 10598  ax-mulcl 10599  ax-mulrcl 10600  ax-mulcom 10601  ax-addass 10602  ax-mulass 10603  ax-distr 10604  ax-i2m1 10605  ax-1ne0 10606  ax-1rid 10607  ax-rnegex 10608  ax-rrecex 10609  ax-cnre 10610  ax-pre-lttri 10611  ax-pre-lttrn 10612  ax-pre-ltadd 10613

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rab 3147  df-v 3496  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-iun 4921  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-po 5474  df-so 5475  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-f1 6360  df-fo 6361  df-f1o 6362  df-fv 6363  df-riota 7114  df-ov 7159  df-oprab 7160  df-mpo 7161  df-1st 7689  df-2nd 7690  df-er 8289  df-en 8510  df-dom 8511  df-sdom 8512  df-pnf 10677  df-mnf 10678  df-ltxr 10680  df-sub 10872  df-neg 10873  df-grpo 28270  df-gid 28271  df-ginv 28272  df-gdiv 28273  df-ablo 28322  df-vc 28336  df-nv 28369  df-va 28372  df-ba 28373  df-sm 28374  df-0v 28375  df-vs 28376  df-nmcv 28377  df-ssp 28499

This theorem is referenced by:  sspm  28511  sspz  28512  sspimsval  28515