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Theorem shex 31844
Description: The set of subspaces of a Hilbert space exists (is a set). (Contributed by NM, 23-Oct-1999.) (New usage is discouraged.)
Assertion
Ref Expression
shex Sℋ ∈ V

Proof of Theorem shex
StepHypRef Expression
1 ax-hilex 31631 . . 3 ℋ ∈ V
21pwex 5346 . 2 𝒫 ℋ ∈ V
3 shss 31842 . . . 4 (𝑥 ∈ Sℋ → 𝑥 ⊆ ℋ)
4 velpw 4565 . . . 4 (𝑥 ∈ 𝒫 ℋ ↔ 𝑥 ⊆ ℋ)
53, 4sylibr 237 . . 3 (𝑥 ∈ Sℋ → 𝑥 ∈ 𝒫 ℋ)
65ssriv 3917 . 2 Sℋ ⊆ 𝒫 ℋ
72, 6ssexi 5288 1 Sℋ ∈ V
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ∈ wcel 2147  Vcvv 3454   ⊆ wss 3900  𝒫 cpw 4560   ℋchba 31551   Sℋ csh 31560
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735  ax-sep 5252  ax-pow 5331  ax-hilex 31631
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-br 5107  df-opab 5171  df-xp 5661  df-cnv 5663  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-sh 31839
This theorem is used by:  chex  31858
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