Theorem lbssp 19844

Description: The span of a basis is the whole space. (Contributed by Mario Carneiro, 24-Jun-2014.)

Hypotheses

Ref	Expression
lbsss.v	⊢ 𝑉 = (Base‘𝑊)
lbsss.j	⊢ 𝐽 = (LBasis‘𝑊)
lbssp.n	⊢ 𝑁 = (LSpan‘𝑊)

Assertion

Ref	Expression
lbssp	⊢ (𝐵 ∈ 𝐽 → (𝑁‘𝐵) = 𝑉)

Proof of Theorem lbssp

Dummy variables 𝑦 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		elfvdm 6695	. . . . 5 ⊢ (𝐵 ∈ (LBasis‘𝑊) → 𝑊 ∈ dom LBasis)
2		lbsss.j	. . . . 5 ⊢ 𝐽 = (LBasis‘𝑊)
3	1, 2	eleq2s 2930	. . . 4 ⊢ (𝐵 ∈ 𝐽 → 𝑊 ∈ dom LBasis)
4		lbsss.v	. . . . 5 ⊢ 𝑉 = (Base‘𝑊)
5		eqid 2820	. . . . 5 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
6		eqid 2820	. . . . 5 ⊢ ( ·𝑠 ‘𝑊) = ( ·𝑠 ‘𝑊)
7		eqid 2820	. . . . 5 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
8		lbssp.n	. . . . 5 ⊢ 𝑁 = (LSpan‘𝑊)
9		eqid 2820	. . . . 5 ⊢ (0g‘(Scalar‘𝑊)) = (0g‘(Scalar‘𝑊))
10	4, 5, 6, 7, 2, 8, 9	islbs 19841	. . . 4 ⊢ (𝑊 ∈ dom LBasis → (𝐵 ∈ 𝐽 ↔ (𝐵 ⊆ 𝑉 ∧ (𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0g‘(Scalar‘𝑊))}) ¬ (𝑦( ·𝑠 ‘𝑊)𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))
11	3, 10	syl 17	. . 3 ⊢ (𝐵 ∈ 𝐽 → (𝐵 ∈ 𝐽 ↔ (𝐵 ⊆ 𝑉 ∧ (𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0g‘(Scalar‘𝑊))}) ¬ (𝑦( ·𝑠 ‘𝑊)𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))
12	11	ibi 269	. 2 ⊢ (𝐵 ∈ 𝐽 → (𝐵 ⊆ 𝑉 ∧ (𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0g‘(Scalar‘𝑊))}) ¬ (𝑦( ·𝑠 ‘𝑊)𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥}))))
13	12	simp2d 1138	1 ⊢ (𝐵 ∈ 𝐽 → (𝑁‘𝐵) = 𝑉)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 208   ∧ w3a 1082   = wceq 1536   ∈ wcel 2113  ∀wral 3137   ∖ cdif 3926   ⊆ wss 3929  {csn 4560  dom cdm 5548  ‘cfv 6348  (class class class)co 7149  Basecbs 16476  Scalarcsca 16561   ·_𝑠 cvsca 16562  0_gc0g 16706  LSpanclspn 19736  LBasisclbs 19839

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1969  ax-7 2014  ax-8 2115  ax-9 2123  ax-10 2144  ax-11 2160  ax-12 2176  ax-ext 2792  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5323

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1084  df-tru 1539  df-ex 1780  df-nf 1784  df-sb 2069  df-mo 2621  df-eu 2653  df-clab 2799  df-cleq 2813  df-clel 2892  df-nfc 2962  df-ral 3142  df-rex 3143  df-rab 3146  df-v 3493  df-sbc 3769  df-dif 3932  df-un 3934  df-in 3936  df-ss 3945  df-nul 4285  df-if 4461  df-pw 4534  df-sn 4561  df-pr 4563  df-op 4567  df-uni 4832  df-br 5060  df-opab 5122  df-mpt 5140  df-id 5453  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-iota 6307  df-fun 6350  df-fv 6356  df-ov 7152  df-lbs 19840

This theorem is referenced by:  islbs2  19919  islbs3  19920  frlmup3  20937  frlmup4  20938  lmimlbs  20973  lbslcic  20978  lbslsp  30958  lvecdim0i  31026  dimkerim  31045  lindsdom  34922  matunitlindflem2  34925  aacllem  44972