Theorem nv0lid 28899

Description: The zero vector is a left identity element. (Contributed by NM, 28-Nov-2007.) (Revised by Mario Carneiro, 21-Dec-2013.) (New usage is discouraged.)

Hypotheses

Ref	Expression
nv0id.1	⊢ 𝑋 = (BaseSet‘𝑈)
nv0id.2	⊢ 𝐺 = ( +𝑣 ‘𝑈)
nv0id.6	⊢ 𝑍 = (0vec‘𝑈)

Assertion

Ref	Expression
nv0lid	⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = 𝐴)

Proof of Theorem nv0lid

Step	Hyp	Ref	Expression
1		nv0id.2	. . . . 5 ⊢ 𝐺 = ( +𝑣 ‘𝑈)
2		nv0id.6	. . . . 5 ⊢ 𝑍 = (0vec‘𝑈)
3	1, 2	0vfval 28869	. . . 4 ⊢ (𝑈 ∈ NrmCVec → 𝑍 = (GId‘𝐺))
4	3	oveq1d 7270	. . 3 ⊢ (𝑈 ∈ NrmCVec → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
5	4	adantr 480	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
6	1	nvgrp 28880	. . 3 ⊢ (𝑈 ∈ NrmCVec → 𝐺 ∈ GrpOp)
7		nv0id.1	. . . . 5 ⊢ 𝑋 = (BaseSet‘𝑈)
8	7, 1	bafval 28867	. . . 4 ⊢ 𝑋 = ran 𝐺
9		eqid 2738	. . . 4 ⊢ (GId‘𝐺) = (GId‘𝐺)
10	8, 9	grpolid 28779	. . 3 ⊢ ((𝐺 ∈ GrpOp ∧ 𝐴 ∈ 𝑋) → ((GId‘𝐺)𝐺𝐴) = 𝐴)
11	6, 10	sylan 579	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → ((GId‘𝐺)𝐺𝐴) = 𝐴)
12	5, 11	eqtrd 2778	1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = 𝐴)

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1539   ∈ wcel 2108  ‘cfv 6418  (class class class)co 7255  GrpOpcgr 28752  GIdcgi 28753  NrmCVeccnv 28847   +_𝑣 cpv 28848  BaseSetcba 28849  0_veccn0v 28851

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pr 5347  ax-un 7566

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-reu 3070  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-1st 7804  df-2nd 7805  df-grpo 28756  df-gid 28757  df-ablo 28808  df-vc 28822  df-nv 28855  df-va 28858  df-ba 28859  df-sm 28860  df-0v 28861  df-nmcv 28863

This theorem is referenced by:  nvpncan2  28916  nvmeq0  28921  imsmetlem  28953  ipdirilem  29092