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单词 lower bound
释义
lower bound

Mathematics
  • See bound.


Computer
  • 1. (of a set S on which the partial ordering < is defined) An element l with the property that l < s for all s in S. Also l is a greatest lower bound if, for any other lower bound h, h < l.

    Since numerical computing demands the truncation of infinite arithmetic to finite arithmetic, the computation of greatest lower bounds of real numbers, indeed of any limit, can only be achieved to a machine tolerance, usually defined to be machine precision: the smallest epsilon eps, such that

    1.0+eps>1.0
    in computer arithmetic. See also upper bound.

    2. (of a matrix or vector) See array.


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