Theorem shss 28993

Description: A subspace is a subset of Hilbert space. (Contributed by NM, 9-Oct-1999.) (Revised by Mario Carneiro, 23-Dec-2013.) (New usage is discouraged.)

Assertion

Ref	Expression
shss	⊢ (𝐻 ∈ Sℋ → 𝐻 ⊆ ℋ)

Proof of Theorem shss

Step	Hyp	Ref	Expression
1		issh 28991	. . 3 ⊢ (𝐻 ∈ Sℋ ↔ ((𝐻 ⊆ ℋ ∧ 0ℎ ∈ 𝐻) ∧ (( +ℎ “ (𝐻 × 𝐻)) ⊆ 𝐻 ∧ ( ·ℎ “ (ℂ × 𝐻)) ⊆ 𝐻)))
2	1	simplbi 501	. 2 ⊢ (𝐻 ∈ Sℋ → (𝐻 ⊆ ℋ ∧ 0ℎ ∈ 𝐻))
3	2	simpld 498	1 ⊢ (𝐻 ∈ Sℋ → 𝐻 ⊆ ℋ)

Syntax hints:   → wi 4   ∧ wa 399   ∈ wcel 2111   ⊆ wss 3881   × cxp 5517   “ cima 5522  ℂcc 10524   ℋchba 28702   +_ℎ cva 28703   ·_ℎ csm 28704  0_ℎc0v 28707   S_ℋ csh 28711

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 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5167  ax-hilex 28782

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-rab 3115  df-v 3443  df-un 3886  df-in 3888  df-ss 3898  df-pw 4499  df-sn 4526  df-pr 4528  df-op 4532  df-br 5031  df-opab 5093  df-xp 5525  df-cnv 5527  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-sh 28990

This theorem is referenced by:  shel  28994  shex  28995  shssii  28996  shsubcl  29003  chss  29012  shsspwh  29029  hhsssh  29052  shocel  29065  shocsh  29067  ocss  29068  shocss  29069  shocorth  29075  shococss  29077  shorth  29078  shoccl  29088  shsel  29097  shintcli  29112  spanid  29130  shjval  29134  shjcl  29139  shlej1  29143  shlub  29197  chscllem2  29421  chscllem4  29423