Theorem chss 31032

Description: A closed subspace of a Hilbert space is a subset of Hilbert space. (Contributed by NM, 24-Aug-1999.) (New usage is discouraged.)

Assertion

Ref	Expression
chss	⊢ (𝐻 ∈ Cℋ → 𝐻 ⊆ ℋ)

Proof of Theorem chss

Step	Hyp	Ref	Expression
1		chsh 31027	. 2 ⊢ (𝐻 ∈ Cℋ → 𝐻 ∈ Sℋ )
2		shss 31013	. 2 ⊢ (𝐻 ∈ Sℋ → 𝐻 ⊆ ℋ)
3	1, 2	syl 17	1 ⊢ (𝐻 ∈ Cℋ → 𝐻 ⊆ ℋ)

Syntax hints:   → wi 4   ∈ wcel 2099   ⊆ wss 3945   ℋchba 30722   S_ℋ csh 30731   C_ℋ cch 30732

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1906  ax-6 1964  ax-7 2004  ax-8 2101  ax-9 2109  ax-ext 2699  ax-sep 5293  ax-hilex 30802

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 847  df-3an 1087  df-tru 1537  df-fal 1547  df-ex 1775  df-sb 2061  df-clab 2706  df-cleq 2720  df-clel 2806  df-rab 3429  df-v 3472  df-dif 3948  df-un 3950  df-in 3952  df-ss 3962  df-nul 4319  df-if 4525  df-pw 4600  df-sn 4625  df-pr 4627  df-op 4631  df-uni 4904  df-br 5143  df-opab 5205  df-xp 5678  df-cnv 5680  df-dm 5682  df-rn 5683  df-res 5684  df-ima 5685  df-iota 6494  df-fv 6550  df-ov 7417  df-sh 31010  df-ch 31024

This theorem is referenced by:  chel  31033  pjhcl  31204  dfch2  31210  shlub  31217  chsscon2  31305  chscllem2  31441  pjvec  31499  pjocvec  31500  pjhf  31511  elpjrn  31993