Theorem nv0lid 30840

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 30810	. . . 4 ⊢ (𝑈 ∈ NrmCVec → 𝑍 = (GId‘𝐺))
4	3	oveq1d 7412	. . 3 ⊢ (𝑈 ∈ NrmCVec → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
5	4	adantr 484	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = ((GId‘𝐺)𝐺𝐴))
6	1	nvgrp 30821	. . 3 ⊢ (𝑈 ∈ NrmCVec → 𝐺 ∈ GrpOp)
7		nv0id.1	. . . . 5 ⊢ 𝑋 = (BaseSet‘𝑈)
8	7, 1	bafval 30808	. . . 4 ⊢ 𝑋 = ran 𝐺
9		eqid 2763	. . . 4 ⊢ (GId‘𝐺) = (GId‘𝐺)
10	8, 9	grpolid 30720	. . 3 ⊢ ((𝐺 ∈ GrpOp ∧ 𝐴 ∈ 𝑋) → ((GId‘𝐺)𝐺𝐴) = 𝐴)
11	6, 10	sylan 589	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → ((GId‘𝐺)𝐺𝐴) = 𝐴)
12	5, 11	eqtrd 2798	1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑍𝐺𝐴) = 𝐴)

Syntax hints:   → wi 4   ∧ wa 399   = wceq 1561   ∈ wcel 2143  ‘cfv 6522  (class class class)co 7397  GrpOpcgr 30693  GIdcgi 30694  NrmCVeccnv 30788   +_𝑣 cpv 30789  BaseSetcba 30790  0_veccn0v 30792

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1816  ax-4 1830  ax-5 1931  ax-6 1988  ax-7 2029  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-rep 5228  ax-sep 5247  ax-nul 5257  ax-pr 5391  ax-un 7719

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1101  df-tru 1564  df-fal 1574  df-ex 1801  df-nf 1805  df-sb 2092  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3078  df-rex 3088  df-reu 3369  df-rab 3416  df-v 3457  df-sbc 3746  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4482  df-sn 4584  df-pr 4586  df-op 4590  df-uni 4867  df-iun 4952  df-br 5102  df-opab 5164  df-mpt 5183  df-id 5543  df-xp 5654  df-rel 5655  df-cnv 5656  df-co 5657  df-dm 5658  df-rn 5659  df-res 5660  df-ima 5661  df-iota 6478  df-fun 6524  df-fn 6525  df-f 6526  df-f1 6527  df-fo 6528  df-f1o 6529  df-fv 6530  df-riota 7354  df-ov 7400  df-oprab 7401  df-1st 7971  df-2nd 7972  df-grpo 30697  df-gid 30698  df-ablo 30749  df-vc 30763  df-nv 30796  df-va 30799  df-ba 30800  df-sm 30801  df-0v 30802  df-nmcv 30804

This theorem is referenced by:  nvpncan2  30857  nvmeq0  30862  imsmetlem  30894  ipdirilem  31033