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Theorem cphphl 25213
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 2761 . . . 4 (Base‘𝑊) = (Base‘𝑊)
2 eqid 2761 . . . 4 (·𝑖𝑊) = (·𝑖𝑊)
3 eqid 2761 . . . 4 (norm‘𝑊) = (norm‘𝑊)
4 eqid 2761 . . . 4 (Scalar‘𝑊) = (Scalar‘𝑊)
5 eqid 2761 . . . 4 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
61, 2, 3, 4, 5iscph 25212 . . 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 1157 . 2 (𝑊 ∈ ℂPreHil → (𝑊 ∈ PreHil ∧ 𝑊 ∈ NrmMod ∧ (Scalar‘𝑊) = (ℂflds (Base‘(Scalar‘𝑊)))))
87simp1d 1154 1 (𝑊 ∈ ℂPreHil → 𝑊 ∈ PreHil)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1097   = wceq 1559  wcel 2141  cin 3903  wss 3904  cmpt 5180  cima 5648  cfv 6517  (class class class)co 7392  0cc0 11070  +∞cpnf 11210  [,)cico 13348  csqrt 15243  Basecbs 17228  s cress 17249  Scalarcsca 17272  ·𝑖cip 17274  fldccnfld 21404  PreHilcphl 21656  normcnm 24616  NrmModcnlm 24620  ℂPreHilccph 25208
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-ext 2733  ax-nul 5255
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-sb 2090  df-clab 2740  df-cleq 2753  df-clel 2836  df-ne 2957  df-rab 3414  df-v 3455  df-sbc 3745  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4480  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-br 5100  df-opab 5162  df-mpt 5181  df-xp 5651  df-cnv 5653  df-dm 5655  df-rn 5656  df-res 5657  df-ima 5658  df-iota 6473  df-fv 6525  df-ov 7395  df-cph 25210
This theorem is referenced by:  cphlvec  25217  cphcjcl  25225  cphipcl  25233  cphnmf  25237  cphipcj  25241  cphorthcom  25243  cphip0l  25244  cphip0r  25245  cphipeq0  25246  cphdir  25247  cphdi  25248  cph2di  25249  cphsubdir  25250  cphsubdi  25251  cph2subdi  25252  cphass  25253  cphassr  25254  ipcau  25280  nmparlem  25281  ipcn  25288  cphsscph  25293  hlphl  25407  cmscsscms  25415  bncssbn  25416  pjthlem2  25480
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