The global Fourier transform can also be obtained by switching (up to sign) the multiplication by a coordinate of the affine line and the differential operator with respect to this coordinate.
它等同于通过交换(可能差一个正负号)由局部坐标给出的数乘和这个局部坐标相对应的微分算子得到的微分模。
A definition of an affine fuzzy sets based on fuzzy line is presented.
利用模糊直线定义模糊仿射集，研究其有关性质。
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