In this paper, the star-kernel of a quasi-differentiable function in one-dimensional space is studied.
本文在一维情形下对拟可微函数的星核进行了讨论，证明了拟微分星-有界等价子类的存在性；
And, we say that a function is differentiable if these things exist.
我们说一个函数是可微的，如果这些偏导数存在。
The function is continuously differentiable.
函数是连续可微分的。
The function is continuously differentiable.
函数是连续可微分的。
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