It is proved that the substitituon mapping is a proper Fourier integral operator with generalized hypoellipticity.
证明
替换映射是一个具广义亚椭园性的适的富里叶积分算子。
③Jean Baptiste Joseph, 1768-1830, 法国数
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换）谐波（）分析换换全息图换光谱It is proved that the substitituon mapping is a proper Fourier integral operator with generalized hypoellipticity.
证明替换映射是一个具广义亚椭园性的适的富里叶积分算子。
The Fourier describer only describes the boundary shape of the planner target region,and can not reflect feature inside characteristic.
平面目标闭合曲线的傅里叶描述子只描述目标区域的边界形状,无法反映目标内在属性。
By using the method of coordination transformation and expandedness Fourier series, an analytic solution is obtained from studying the Newtonian fluids laminar flow in eccentric anulus.
采用坐标换和函数展开成傅立叶级数的方法,推导出牛顿流体偏心环空轴向流动速度场的严格数解析解.
A relatively direct method is expounded in this paper to prove the termwise differentiation of power series, and a simple method is expressed to calculate the Fourier coefficient.
用比较直接的方法证明幂级数的和函数在收敛域内可以逐项微分的公式；并得到计算傅立叶系数的一种简便方法.
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