Since the coefficient of the new polynomial is too complicate to calculate directly, we introduce a linear operator and study the algebraic properties of it.
该多项式的系数较为复杂，难以直接计算。 我们引进了一个线性算子并研究了其性质。
2
Clearly, the difference operator or sum operator is the convenient tool for the polynomial of factorial powers.
显然，差分算子及其逆算子是阶乘幂多项式的方便工具。
3
The dielectric property of dispersive media is written as rational polynomial function, the relation between D and E is derived in time domain. It is named shift operator FDTD (SO-FDTD) method.