Theorem lbssp 18900

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 6130	. . . . 5 ⊢ (𝐵 ∈ (LBasis‘𝑊) → 𝑊 ∈ dom LBasis)
2		lbsss.j	. . . . 5 ⊢ 𝐽 = (LBasis‘𝑊)
3	1, 2	eleq2s 2706	. . . 4 ⊢ (𝐵 ∈ 𝐽 → 𝑊 ∈ dom LBasis)
4		lbsss.v	. . . . 5 ⊢ 𝑉 = (Base‘𝑊)
5		eqid 2610	. . . . 5 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
6		eqid 2610	. . . . 5 ⊢ ( ·𝑠 ‘𝑊) = ( ·𝑠 ‘𝑊)
7		eqid 2610	. . . . 5 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
8		lbssp.n	. . . . 5 ⊢ 𝑁 = (LSpan‘𝑊)
9		eqid 2610	. . . . 5 ⊢ (0g‘(Scalar‘𝑊)) = (0g‘(Scalar‘𝑊))
10	4, 5, 6, 7, 2, 8, 9	islbs 18897	. . . 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 255	. 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 1067	1 ⊢ (𝐵 ∈ 𝐽 → (𝑁‘𝐵) = 𝑉)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977  ∀wral 2896   ∖ cdif 3537   ⊆ wss 3540  {csn 4125  dom cdm 5038  ‘cfv 5804  (class class class)co 6549  Basecbs 15695  Scalarcsca 15771   ·_𝑠 cvsca 15772  0_gc0g 15923  LSpanclspn 18792  LBasisclbs 18895

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-iota 5768  df-fun 5806  df-fv 5812  df-ov 6552  df-lbs 18896

This theorem is referenced by:  islbs2  18975  islbs3  18976  frlmup3  19958  frlmup4  19959  lmimlbs  19994  lbslcic  19999  lindsdom  32573  matunitlindflem2  32576  aacllem  42356