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1)  second-order approximation
二阶逼近
2)  two-order Pade approximation
二阶Pade逼近
3)  first(second) order approximation
一阶(二阶)逼近
4)  degree of approximation
逼近阶
1.
In this paper we introduce S-B-B operators and study its Convergence and degree of approximation.
本文引入Sikkema-Bernstein-Bézier算子,并研究其收敛性和逼近
2.
In this paper,a new type of Kantorovich operator was constructed,and the convergence and degree of approximation of this operator in Orlicz spaces were discussed.
构造了一类新型的Kantorovich算子,讨论了该算子在Orlicz空间内的收敛性与逼近阶的估计问题。
3.
A class of two dimension Meyer - Konig and Zeller Opcrators is constructed, and its degree of approximation and direct theorem on continuous function space and a class of interpolation space are obtained.
构造了一类二维Meyer-KonigandZeller算子,并得到了它关于连续函数空间和一类插补空间的逼近阶和直接定理。
5)  order of approximation
逼近阶
1.
They had also estimated the order of approximation.
对于给定的函数f∈W′M[-π,π]d,Mbasker和Micheli已构造出具体的神经网络逼近Sobolev类函数及其导数并给出逼近阶的估计。
2.
The best order of approximation by (N, P) means of T-F series is discussed, and asufficient condition to reach this order is found.
讨论了算子(N,P)的最佳逼近阶以及达到此逼近阶的一个充分条件。
3.
The approximation of differentiable functions by a kind of interpolatory rational functions is discussed,and the corresponding order of approximation is obtained.
讨论了一类插值有理函数对可微函数的逼近,得到了相应的逼近阶。
6)  approximation order
逼近阶
1.
Construction of interpolatory multiscaling functions with high approximation order;
具有高逼近阶的插值多尺度函数的构造
2.
Increasing approximation order of finite element multi-scaling functions by two-scale similarity transform;
利用两尺度相似变换提高有限元多尺度函数的逼近阶
3.
Optimal approximation order and optimal smoothnessof a multivariate dual scaling functions;
多元对偶尺度函数的最优逼近阶和最优光滑性
补充资料:逼近阶


逼近阶
approximation order

  逼近阶!aPp印xim拓佣耐er;.酬山~.州阳皿,} 逼近误差的阶,它作为一个变量依赖于某个连续的或离散的变量:,而:又与另一变量甲(T)相关,甲闰的性态通常假定是已知的‘一般地,:是一个参量,它表示逼近集的数值特征(如集合的大小)或逼近方法的数值特征(如插值步骤).此外,:值所组成的集可能有一个有穷或无限的极限奴.函数价(动常常是一个幂函数,指数函数或对数函数.被逼近函数(或它的某个导数)的连续模(modulusof①ntinulty)或其控制函数可看作价介) 逼近方法的性质及被逼近对象的性质(例如,被逼近函数的差分微分性质)确定了逼近阶,见函数通近,正定理和逆定理(approximation of funCtions,direCtand inverse theoren一s). 在数值分析中,如果某个数值方法产生的误差为口(h勺,则称指数。为其逼近阶,其中h为此方法所采用的步长.
  
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