修正的组合型二元三角插值多项式

On the Combinational Double Trigonometric Interpolation Polynomial of Amendment

以两组不同的节点构造了一个组合型二元Lagrange三角插值多项式算子Fmn(f;r1,r2,x,y),研究了该算子对二元连续周期函数的收敛性,并对其收敛阶进行了估计.

In this paper, we construct a combinational operator of the double trigonometric interpolation polynomial based on two kinds of different nodes, study the convergence of the operator for the double continuous periodic functions, and estimate the convergence order and so on.