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from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun analysis A
function denoted ||v|| thatmaps avector v to anon-negative value such that ||cv|| = |c|.||v||, where c is ascalar , and ||v + w|| ≤ ||v|| + ||w|| (thetriangle inequality ); the condition that ||v|| = 0 implies that v = 0 is not required, but when it holds, the semi-norm is anorm .
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