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Theorem cphphl 23775
Description: A subcomplex pre-Hilbert space is a pre-Hilbert space. (Contributed by Mario Carneiro, 7-Oct-2015.)
Assertion
Ref Expression
cphphl (𝑊 ∈ ℂPreHil → 𝑊 ∈ PreHil)

Proof of Theorem cphphl
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 eqid 2821 . . . 4 (Base‘𝑊) = (Base‘𝑊)
2 eqid 2821 . . . 4 (·𝑖𝑊) = (·𝑖𝑊)
3 eqid 2821 . . . 4 (norm‘𝑊) = (norm‘𝑊)
4 eqid 2821 . . . 4 (Scalar‘𝑊) = (Scalar‘𝑊)
5 eqid 2821 . . . 4 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
61, 2, 3, 4, 5iscph 23774 . . 3 (𝑊 ∈ ℂPreHil ↔ ((𝑊 ∈ PreHil ∧ 𝑊 ∈ NrmMod ∧ (Scalar‘𝑊) = (ℂflds (Base‘(Scalar‘𝑊)))) ∧ (√ “ ((Base‘(Scalar‘𝑊)) ∩ (0[,)+∞))) ⊆ (Base‘(Scalar‘𝑊)) ∧ (norm‘𝑊) = (𝑥 ∈ (Base‘𝑊) ↦ (√‘(𝑥(·𝑖𝑊)𝑥)))))
76simp1bi 1141 . 2 (𝑊 ∈ ℂPreHil → (𝑊 ∈ PreHil ∧ 𝑊 ∈ NrmMod ∧ (Scalar‘𝑊) = (ℂflds (Base‘(Scalar‘𝑊)))))
87simp1d 1138 1 (𝑊 ∈ ℂPreHil → 𝑊 ∈ PreHil)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1083   = wceq 1537  wcel 2114  cin 3935  wss 3936  cmpt 5146  cima 5558  cfv 6355  (class class class)co 7156  0cc0 10537  +∞cpnf 10672  [,)cico 12741  csqrt 14592  Basecbs 16483  s cress 16484  Scalarcsca 16568  ·𝑖cip 16570  fldccnfld 20545  PreHilcphl 20768  normcnm 23186  NrmModcnlm 23190  ℂPreHilccph 23770
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-nul 5210
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-br 5067  df-opab 5129  df-mpt 5147  df-xp 5561  df-cnv 5563  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fv 6363  df-ov 7159  df-cph 23772
This theorem is referenced by:  cphlvec  23779  cphcjcl  23787  cphipcl  23795  cphnmf  23799  cphipcj  23803  cphorthcom  23805  cphip0l  23806  cphip0r  23807  cphipeq0  23808  cphdir  23809  cphdi  23810  cph2di  23811  cphsubdir  23812  cphsubdi  23813  cph2subdi  23814  cphass  23815  cphassr  23816  ipcau  23841  nmparlem  23842  ipcn  23849  cphsscph  23854  hlphl  23968  cmscsscms  23976  bncssbn  23977  pjthlem2  24041
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