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Theorem cphphl 25071
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 2729 . . . 4 (Base‘𝑊) = (Base‘𝑊)
2 eqid 2729 . . . 4 (·𝑖𝑊) = (·𝑖𝑊)
3 eqid 2729 . . . 4 (norm‘𝑊) = (norm‘𝑊)
4 eqid 2729 . . . 4 (Scalar‘𝑊) = (Scalar‘𝑊)
5 eqid 2729 . . . 4 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
61, 2, 3, 4, 5iscph 25070 . . 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 3913  wss 3914  cmpt 5188  cima 5641  cfv 6511  (class class class)co 7387  0cc0 11068  +∞cpnf 11205  [,)cico 13308  csqrt 15199  Basecbs 17179  s cress 17200  Scalarcsca 17223  ·𝑖cip 17225  fldccnfld 21264  PreHilcphl 21533  normcnm 24464  NrmModcnlm 24468  ℂPreHilccph 25066
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 2701  ax-nul 5261
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 2708  df-cleq 2721  df-clel 2803  df-ne 2926  df-rab 3406  df-v 3449  df-sbc 3754  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4872  df-br 5108  df-opab 5170  df-mpt 5189  df-xp 5644  df-cnv 5646  df-dm 5648  df-rn 5649  df-res 5650  df-ima 5651  df-iota 6464  df-fv 6519  df-ov 7390  df-cph 25068
This theorem is referenced by:  cphlvec  25075  cphcjcl  25083  cphipcl  25091  cphnmf  25095  cphipcj  25099  cphorthcom  25101  cphip0l  25102  cphip0r  25103  cphipeq0  25104  cphdir  25105  cphdi  25106  cph2di  25107  cphsubdir  25108  cphsubdi  25109  cph2subdi  25110  cphass  25111  cphassr  25112  ipcau  25138  nmparlem  25139  ipcn  25146  cphsscph  25151  hlphl  25265  cmscsscms  25273  bncssbn  25274  pjthlem2  25338
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