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Theorem ch0 27469
 Description: The zero vector belongs to any closed subspace of a Hilbert space. (Contributed by NM, 24-Aug-1999.) (New usage is discouraged.)
Assertion
Ref Expression
ch0 (𝐻C → 0𝐻)

Proof of Theorem ch0
StepHypRef Expression
1 chsh 27465 . 2 (𝐻C𝐻S )
2 sh0 27457 . 2 (𝐻S → 0𝐻)
31, 2syl 17 1 (𝐻C → 0𝐻)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∈ wcel 1977  0ℎc0v 27165   Sℋ csh 27169   Cℋ cch 27170 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-hilex 27240 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-rex 2902  df-rab 2905  df-v 3175  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-xp 5044  df-cnv 5046  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fv 5812  df-ov 6552  df-sh 27448  df-ch 27462 This theorem is referenced by:  omlsii  27646  nonbooli  27894  strlem1  28493
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