That was this symbolic vector operator in which the components are the partial derivative operators.
这个是符号化的向量算子,其中它的分量是偏微分算子。
2
By reducing the MREIT problem to a nonlinear operator equation, the formal derivative of the operator and the formula of solution for linearization problem are given.
通过将问题化为非线性算子方程,推导出算子的形式导数,给出了线性化问题解的等价表达。
3
In chapter 3, we set some new conceptions of G-derivative, and make a research on the relations among these new derivatives and the convexity of an operator.