Theorem shss 28981

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 28979	. . 3 ⊢ (𝐻 ∈ Sℋ ↔ ((𝐻 ⊆ ℋ ∧ 0ℎ ∈ 𝐻) ∧ (( +ℎ “ (𝐻 × 𝐻)) ⊆ 𝐻 ∧ ( ·ℎ “ (ℂ × 𝐻)) ⊆ 𝐻)))
2	1	simplbi 500	. 2 ⊢ (𝐻 ∈ Sℋ → (𝐻 ⊆ ℋ ∧ 0ℎ ∈ 𝐻))
3	2	simpld 497	1 ⊢ (𝐻 ∈ Sℋ → 𝐻 ⊆ ℋ)

Syntax hints:   → wi 4   ∧ wa 398   ∈ wcel 2110   ⊆ wss 3935   × cxp 5547   “ cima 5552  ℂcc 10529   ℋchba 28690   +_ℎ cva 28691   ·_ℎ csm 28692  0_ℎc0v 28695   S_ℋ csh 28699

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-sep 5195  ax-hilex 28770

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-rab 3147  df-v 3496  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-nul 4291  df-if 4467  df-pw 4540  df-sn 4561  df-pr 4563  df-op 4567  df-br 5059  df-opab 5121  df-xp 5555  df-cnv 5557  df-dm 5559  df-rn 5560  df-res 5561  df-ima 5562  df-sh 28978

This theorem is referenced by:  shel  28982  shex  28983  shssii  28984  shsubcl  28991  chss  29000  shsspwh  29017  hhsssh  29040  shocel  29053  shocsh  29055  ocss  29056  shocss  29057  shocorth  29063  shococss  29065  shorth  29066  shoccl  29076  shsel  29085  shintcli  29100  spanid  29118  shjval  29122  shjcl  29127  shlej1  29131  shlub  29185  chscllem2  29409  chscllem4  29411