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Theorem chle0i 22946
Description: No Hilbert closed subspace is smaller than zero. (Contributed by NM, 7-Apr-2001.) (New usage is discouraged.)
Hypothesis
Ref Expression
ch0le.1  |-  A  e. 
CH
Assertion
Ref Expression
chle0i  |-  ( A 
C_  0H  <->  A  =  0H )

Proof of Theorem chle0i
StepHypRef Expression
1 ch0le.1 . 2  |-  A  e. 
CH
2 chle0 22937 . 2  |-  ( A  e.  CH  ->  ( A  C_  0H  <->  A  =  0H ) )
31, 2ax-mp 8 1  |-  ( A 
C_  0H  <->  A  =  0H )
Colors of variables: wff set class
Syntax hints:    <-> wb 177    = wceq 1652    e. wcel 1725    C_ wss 3312   CHcch 22424   0Hc0h 22430
This theorem is referenced by:  chj00i  22981  chsup0  23042  spansnm0i  23144  largei  23762
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416  ax-sep 4322  ax-hilex 22494
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-rex 2703  df-rab 2706  df-v 2950  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-pw 3793  df-sn 3812  df-pr 3813  df-op 3815  df-uni 4008  df-br 4205  df-opab 4259  df-xp 4876  df-cnv 4878  df-dm 4880  df-rn 4881  df-res 4882  df-ima 4883  df-iota 5410  df-fv 5454  df-ov 6076  df-sh 22701  df-ch 22716  df-ch0 22747
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