Theorem hlphl 25332

Description: Every subcomplex Hilbert space is an inner product space (also called a pre-Hilbert space). (Contributed by NM, 28-Apr-2007.) (Revised by Mario Carneiro, 15-Oct-2015.)

Assertion

Ref	Expression
hlphl	⊢ (𝑊 ∈ ℂHil → 𝑊 ∈ PreHil)

Proof of Theorem hlphl

Step	Hyp	Ref	Expression
1		hlcph 25331	. 2 ⊢ (𝑊 ∈ ℂHil → 𝑊 ∈ ℂPreHil)
2		cphphl 25138	. 2 ⊢ (𝑊 ∈ ℂPreHil → 𝑊 ∈ PreHil)
3	1, 2	syl 17	1 ⊢ (𝑊 ∈ ℂHil → 𝑊 ∈ PreHil)

Syntax hints:   → wi 4   ∈ wcel 2114  PreHilcphl 21604  ℂPreHilccph 25133  ℂHilchl 25301

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  df-hl 25304

This theorem is referenced by:  chlcsschl  25345  pjthlem1  25404  pjth  25406  pjth2  25407  cldcss  25408  hlhil  25410