Theorem lbssp 19079

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 6220	. . . . 5 ⊢ (𝐵 ∈ (LBasis‘𝑊) → 𝑊 ∈ dom LBasis)
2		lbsss.j	. . . . 5 ⊢ 𝐽 = (LBasis‘𝑊)
3	1, 2	eleq2s 2719	. . . 4 ⊢ (𝐵 ∈ 𝐽 → 𝑊 ∈ dom LBasis)
4		lbsss.v	. . . . 5 ⊢ 𝑉 = (Base‘𝑊)
5		eqid 2622	. . . . 5 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
6		eqid 2622	. . . . 5 ⊢ ( ·𝑠 ‘𝑊) = ( ·𝑠 ‘𝑊)
7		eqid 2622	. . . . 5 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
8		lbssp.n	. . . . 5 ⊢ 𝑁 = (LSpan‘𝑊)
9		eqid 2622	. . . . 5 ⊢ (0g‘(Scalar‘𝑊)) = (0g‘(Scalar‘𝑊))
10	4, 5, 6, 7, 2, 8, 9	islbs 19076	. . . 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 256	. 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 1074	1 ⊢ (𝐵 ∈ 𝐽 → (𝑁‘𝐵) = 𝑉)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990  ∀wral 2912   ∖ cdif 3571   ⊆ wss 3574  {csn 4177  dom cdm 5114  ‘cfv 5888  (class class class)co 6650  Basecbs 15857  Scalarcsca 15944   ·_𝑠 cvsca 15945  0_gc0g 16100  LSpanclspn 18971  LBasisclbs 19074

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-iota 5851  df-fun 5890  df-fv 5896  df-ov 6653  df-lbs 19075

This theorem is referenced by:  islbs2  19154  islbs3  19155  frlmup3  20139  frlmup4  20140  lmimlbs  20175  lbslcic  20180  lindsdom  33403  matunitlindflem2  33406  aacllem  42547