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Word: semi-norm
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Meaning:
Noun:
- analysis A |''v''|| that [[maps a |''cv''|| = |''c''|.||''v''||, where ''c'' is a [[scalar, and ||''v'' + ''w''|| ≤ ||''v''|| + ||''w''|| (the |''v''|| = 0 implies that ''v'' = 0 is not required, but when it holds, the semi-norm is a [[norm.
Source: Wiktionary
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