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Theorem cphphl 25138
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 2736 . . . 4 (Base‘𝑊) = (Base‘𝑊)
2 eqid 2736 . . . 4 (·𝑖𝑊) = (·𝑖𝑊)
3 eqid 2736 . . . 4 (norm‘𝑊) = (norm‘𝑊)
4 eqid 2736 . . . 4 (Scalar‘𝑊) = (Scalar‘𝑊)
5 eqid 2736 . . . 4 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
61, 2, 3, 4, 5iscph 25137 . . 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 1146 . 2 (𝑊 ∈ ℂPreHil → (𝑊 ∈ PreHil ∧ 𝑊 ∈ NrmMod ∧ (Scalar‘𝑊) = (ℂflds (Base‘(Scalar‘𝑊)))))
87simp1d 1143 1 (𝑊 ∈ ℂPreHil → 𝑊 ∈ PreHil)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1087   = wceq 1542  wcel 2114  cin 3888  wss 3889  cmpt 5166  cima 5634  cfv 6498  (class class class)co 7367  0cc0 11038  +∞cpnf 11176  [,)cico 13300  csqrt 15195  Basecbs 17179  s cress 17200  Scalarcsca 17223  ·𝑖cip 17225  fldccnfld 21352  PreHilcphl 21604  normcnm 24541  NrmModcnlm 24545  ℂPreHilccph 25133
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2708  ax-nul 5241
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2715  df-cleq 2728  df-clel 2811  df-ne 2933  df-rab 3390  df-v 3431  df-sbc 3729  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-br 5086  df-opab 5148  df-mpt 5167  df-xp 5637  df-cnv 5639  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6454  df-fv 6506  df-ov 7370  df-cph 25135
This theorem is referenced by:  cphlvec  25142  cphcjcl  25150  cphipcl  25158  cphnmf  25162  cphipcj  25166  cphorthcom  25168  cphip0l  25169  cphip0r  25170  cphipeq0  25171  cphdir  25172  cphdi  25173  cph2di  25174  cphsubdir  25175  cphsubdi  25176  cph2subdi  25177  cphass  25178  cphassr  25179  ipcau  25205  nmparlem  25206  ipcn  25213  cphsscph  25218  hlphl  25332  cmscsscms  25340  bncssbn  25341  pjthlem2  25405
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