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Theorem linds1 21941
Description: An independent set of vectors is a set of vectors. (Contributed by Stefan O'Rear, 24-Feb-2015.)
Hypothesis
Ref Expression
islinds.b 𝐵 = (Base‘𝑊)
Assertion
Ref Expression
linds1 (𝑋 ∈ (LIndS‘𝑊) → 𝑋𝐵)

Proof of Theorem linds1
StepHypRef Expression
1 elfvdm 6917 . . . 4 (𝑋 ∈ (LIndS‘𝑊) → 𝑊 ∈ dom LIndS)
2 islinds.b . . . . 5 𝐵 = (Base‘𝑊)
32islinds 21940 . . . 4 (𝑊 ∈ dom LIndS → (𝑋 ∈ (LIndS‘𝑊) ↔ (𝑋𝐵 ∧ ( I ↾ 𝑋) LIndF 𝑊)))
41, 3syl 18 . . 3 (𝑋 ∈ (LIndS‘𝑊) → (𝑋 ∈ (LIndS‘𝑊) ↔ (𝑋𝐵 ∧ ( I ↾ 𝑋) LIndF 𝑊)))
54ibi 270 . 2 (𝑋 ∈ (LIndS‘𝑊) → (𝑋𝐵 ∧ ( I ↾ 𝑋) LIndF 𝑊))
65simpld 499 1 (𝑋 ∈ (LIndS‘𝑊) → 𝑋𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 400   = wceq 1570  wcel 2143  wss 3906   class class class wbr 5110   I cid 5557  dom cdm 5663  cres 5665  cfv 6538  Basecbs 17270   LIndF clindf 21935  LIndSclinds 21936
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5258  ax-nul 5270  ax-pow 5338  ax-pr 5406
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4288  df-if 4489  df-pw 4565  df-sn 4591  df-pr 4593  df-op 4597  df-uni 4874  df-br 5111  df-opab 5175  df-mpt 5194  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-res 5675  df-iota 6494  df-fun 6540  df-fv 6546  df-linds 21938
This theorem is referenced by:  lindsss  21955  lindsmm2  21960  islinds3  21965  islinds4  21966  0nellinds  33666  linds2eq  33675  lindsunlem  33995  lindsun  33996  dimkerim  33998  lindsadd  38245  lindsdom  38246  lindsenlbs  38247
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