幂定律 Power law
（重定向自Scaling law）
幂定律（英语：power law）是一种多项式关系。遵守这关系的多项式，会展现出标度不变性（scale invariance）的性质。最普通的，表达两个变量之间关系的幂定律，其形式为
；
其中，
与
都是常数，
是
的一个渐近微小函数。
Scaling law
中文百科
英语百科
Power law 幂定律
（重定向自Scaling law）
In statistics, a power law is a functional relationship between two quantities, where a relative change in one quantity results in a proportional relative change in the other quantity, independent of the initial size of those quantities: one quantity varies as a power of another. For instance, considering the area of a square in terms of the length of its side, if the length is doubled, the area is multiplied by a factor of four.
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