Theorem nv0lid 30929

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 30899	. . . 4 ⊢ (𝑈 ∈ NrmCVec → 𝑍 = (GId‘𝐺))
4	3	oveq1d 7426	. . 3 ⊢ (𝑈 ∈ NrmCVec → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
5	4	adantr 485	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
6	1	nvgrp 30910	. . 3 ⊢ (𝑈 ∈ NrmCVec → 𝐺 ∈ GrpOp)
7		nv0id.1	. . . . 5 ⊢ 𝑋 = (BaseSet‘𝑈)
8	7, 1	bafval 30897	. . . 4 ⊢ 𝑋 = ran 𝐺
9		eqid 2769	. . . 4 ⊢ (GId‘𝐺) = (GId‘𝐺)
10	8, 9	grpolid 30809	. . 3 ⊢ ((𝐺 ∈ GrpOp ∧ 𝐴 ∈ 𝑋) → ((GId‘𝐺)𝐺𝐴) = 𝐴)
11	6, 10	sylan 591	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → ((GId‘𝐺)𝐺𝐴) = 𝐴)
12	5, 11	eqtrd 2804	1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = 𝐴)

Syntax hints:   → wi 4   ∧ wa 400   = wceq 1567   ∈ wcel 2149  ‘cfv 6537  (class class class)co 7411  GrpOpcgr 30782  GIdcgi 30783  NrmCVeccnv 30877   +_𝑣 cpv 30878  BaseSetcba 30879  0_veccn0v 30881

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-rep 5242  ax-sep 5261  ax-nul 5271  ax-pr 5405  ax-un 7733

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-reu 3377  df-rab 3424  df-v 3465  df-sbc 3754  df-csb 3862  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4877  df-iun 4962  df-br 5114  df-opab 5178  df-mpt 5197  df-id 5557  df-xp 5668  df-rel 5669  df-cnv 5670  df-co 5671  df-dm 5672  df-rn 5673  df-res 5674  df-ima 5675  df-iota 6493  df-fun 6539  df-fn 6540  df-f 6541  df-f1 6542  df-fo 6543  df-f1o 6544  df-fv 6545  df-riota 7368  df-ov 7414  df-oprab 7415  df-1st 7986  df-2nd 7987  df-grpo 30786  df-gid 30787  df-ablo 30838  df-vc 30852  df-nv 30885  df-va 30888  df-ba 30889  df-sm 30890  df-0v 30891  df-nmcv 30893

This theorem is referenced by:  nvpncan2  30946  nvmeq0  30951  imsmetlem  30983  ipdirilem  31122