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单词 level set
释义
level set

Mathematics
  • Given a real-valued function f on a set S, a level set is a subset of S of the form

    {sεS|f(s)=c},

    for a given real constant c. For example, with f(x,y,z) = x2 + y2 + z2, the level sets (which may be termed level surfaces in this case) are spheres when c > 0.


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