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Theorem cphphl 25077
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 2730 . . . 4 (Base‘𝑊) = (Base‘𝑊)
2 eqid 2730 . . . 4 (·𝑖𝑊) = (·𝑖𝑊)
3 eqid 2730 . . . 4 (norm‘𝑊) = (norm‘𝑊)
4 eqid 2730 . . . 4 (Scalar‘𝑊) = (Scalar‘𝑊)
5 eqid 2730 . . . 4 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
61, 2, 3, 4, 5iscph 25076 . . 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 1145 . 2 (𝑊 ∈ ℂPreHil → (𝑊 ∈ PreHil ∧ 𝑊 ∈ NrmMod ∧ (Scalar‘𝑊) = (ℂflds (Base‘(Scalar‘𝑊)))))
87simp1d 1142 1 (𝑊 ∈ ℂPreHil → 𝑊 ∈ PreHil)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1086   = wceq 1540  wcel 2109  cin 3915  wss 3916  cmpt 5190  cima 5643  cfv 6513  (class class class)co 7389  0cc0 11074  +∞cpnf 11211  [,)cico 13314  csqrt 15205  Basecbs 17185  s cress 17206  Scalarcsca 17229  ·𝑖cip 17231  fldccnfld 21270  PreHilcphl 21539  normcnm 24470  NrmModcnlm 24474  ℂPreHilccph 25072
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 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-ext 2702  ax-nul 5263
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2066  df-clab 2709  df-cleq 2722  df-clel 2804  df-ne 2927  df-rab 3409  df-v 3452  df-sbc 3756  df-dif 3919  df-un 3921  df-in 3923  df-ss 3933  df-nul 4299  df-if 4491  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-br 5110  df-opab 5172  df-mpt 5191  df-xp 5646  df-cnv 5648  df-dm 5650  df-rn 5651  df-res 5652  df-ima 5653  df-iota 6466  df-fv 6521  df-ov 7392  df-cph 25074
This theorem is referenced by:  cphlvec  25081  cphcjcl  25089  cphipcl  25097  cphnmf  25101  cphipcj  25105  cphorthcom  25107  cphip0l  25108  cphip0r  25109  cphipeq0  25110  cphdir  25111  cphdi  25112  cph2di  25113  cphsubdir  25114  cphsubdi  25115  cph2subdi  25116  cphass  25117  cphassr  25118  ipcau  25144  nmparlem  25145  ipcn  25152  cphsscph  25157  hlphl  25271  cmscsscms  25279  bncssbn  25280  pjthlem2  25344
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