Using the cosine transform matrix the Cartesian tensors, differential operators and related equations can be readily transformed into corresponding expressions in orthogonal curvilinear coordinates.
利用这个变换矩阵可以方便地将笛卡尔坐标的张量表达式、微分算子及有关公式变换成正交曲线坐标的相应公式。
This paper deals with the dual Toeplitz operators on the orthogonal complement of the Fock space.
本文提出了寻求非线性演化方程的对偶算子的待定系数法。
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