Metamath Proof Explorer
Description: No Hilbert closed subspace is smaller than zero. (Contributed by NM, 7-Apr-2001) (New usage is discouraged.)
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Ref |
Expression |
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Hypothesis |
ch0le.1 |
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Assertion |
chle0i |
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Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
ch0le.1 |
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2 |
|
chle0 |
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3 |
1 2
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ax-mp |
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