Theorem chss 31052

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 31047	. 2 ⊢ (𝐻 ∈ Cℋ → 𝐻 ∈ Sℋ )
2		shss 31033	. 2 ⊢ (𝐻 ∈ Sℋ → 𝐻 ⊆ ℋ)
3	1, 2	syl 17	1 ⊢ (𝐻 ∈ Cℋ → 𝐻 ⊆ ℋ)

Syntax hints:   → wi 4   ∈ wcel 2099   ⊆ wss 3947   ℋchba 30742   S_ℋ csh 30751   C_ℋ cch 30752

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 5299  ax-hilex 30822

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 3430  df-v 3473  df-dif 3950  df-un 3952  df-in 3954  df-ss 3964  df-nul 4324  df-if 4530  df-pw 4605  df-sn 4630  df-pr 4632  df-op 4636  df-uni 4909  df-br 5149  df-opab 5211  df-xp 5684  df-cnv 5686  df-dm 5688  df-rn 5689  df-res 5690  df-ima 5691  df-iota 6500  df-fv 6556  df-ov 7423  df-sh 31030  df-ch 31044

This theorem is referenced by:  chel  31053  pjhcl  31224  dfch2  31230  shlub  31237  chsscon2  31325  chscllem2  31461  pjvec  31519  pjocvec  31520  pjhf  31531  elpjrn  32013

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