Theorem nv0lid 28998

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 28968	. . . 4 ⊢ (𝑈 ∈ NrmCVec → 𝑍 = (GId‘𝐺))
4	3	oveq1d 7290	. . 3 ⊢ (𝑈 ∈ NrmCVec → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
5	4	adantr 481	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
6	1	nvgrp 28979	. . 3 ⊢ (𝑈 ∈ NrmCVec → 𝐺 ∈ GrpOp)
7		nv0id.1	. . . . 5 ⊢ 𝑋 = (BaseSet‘𝑈)
8	7, 1	bafval 28966	. . . 4 ⊢ 𝑋 = ran 𝐺
9		eqid 2738	. . . 4 ⊢ (GId‘𝐺) = (GId‘𝐺)
10	8, 9	grpolid 28878	. . 3 ⊢ ((𝐺 ∈ GrpOp ∧ 𝐴 ∈ 𝑋) → ((GId‘𝐺)𝐺𝐴) = 𝐴)
11	6, 10	sylan 580	. 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 396   = wceq 1539   ∈ wcel 2106  ‘cfv 6433  (class class class)co 7275  GrpOpcgr 28851  GIdcgi 28852  NrmCVeccnv 28946   +_𝑣 cpv 28947  BaseSetcba 28948  0_veccn0v 28950

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pr 5352  ax-un 7588

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-riota 7232  df-ov 7278  df-oprab 7279  df-1st 7831  df-2nd 7832  df-grpo 28855  df-gid 28856  df-ablo 28907  df-vc 28921  df-nv 28954  df-va 28957  df-ba 28958  df-sm 28959  df-0v 28960  df-nmcv 28962

This theorem is referenced by:  nvpncan2  29015  nvmeq0  29020  imsmetlem  29052  ipdirilem  29191