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阶梯函数

形如阶梯的具有无穷多个跳跃间断点的函数。即分段函数。

数学中,一个实数函数被称为阶段函数(或者阶梯函数),则它可以被写作:有限的间隔指标函数的线性组合。不正规的说法是,一个阶段函数就是一个分段常值函数,只是含有的阶段很多但是有限。

In mathematics, a function on the real numbers is called a step function (or staircase function) if it can be written as a finite linear combination of indicator functions of intervals. Informally speaking, a step function is a piecewise constant function having only finitely many pieces.

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