1) linear operators/positive operators
线性算子/正定算子
2) positive linear operators
线性正算子
1.
In this paper,based on classical Korovkin theorem on convergence of positive linear operators,a Korovkin type theorem and more convenient conditions are obtained.
从经典线性正算子收敛的柯洛夫金定理出发,建立了适用范围更广的关于闭区间上连续函数的柯洛夫金定理。
2.
By using of the method of multiplier-enlargement,this paper discusses the asymptotic estimation of approximation of multivariate unbounded continuous functions with positive linear operators,and gives general asymptotic formulae.
利用扩展乘数法讨论了多元线性正算子改造为逼近多元无界连续函数的渐近估计 ,给出了具有一般性的渐近公式 作为实例 ,研究了多元非乘积型的Landau多项式算子逼近多元无界连续函数的渐近估计式 ,推广了前人的若干结
3.
By applying the classical appropriate functions 1, x x2 to the method of multiplier- enlargement, this paper established a certain theorem to approximate any unbounded continuous functions by modified positive linear operators.
将经典“试探函数组”１，ｘ，ｘ２应用于扩展乘数法；建立了一个判别线性正算子能否改造为逼近任意无界连续函数的充要条件。
3) positive linear operator
线性正算子
1.
The Korovkin theorems on convergence of positive linear operators are well-known ones of approximation theory of functions.
关于线性正算子收敛性方面的Ｋｏｒｏｖｋｉｎ定理是函数逼近论的著名定理。
4) linear positive operators
线性正算子
1.
The saturation of a class of linear positive operators in Besov spaces is studied.
讨论了一类线性正算子在Besov空间中的饱和
5) positive linear operator
正线性算子
1.
In this paper,we introduce new sequence of positive linear operators,which preserve x2 and converge each continuous function on [0,∞).
给出一类新的正线性算子序列,它具有保持x2不变的特性,并且关于[0,∞)上的连续函数收敛。
2.
The degree of approximation of uniform bounds positive linear operators in Lψ spaces is studied.
研究一类与Lp空间相关的Banach空间Lψ中的一致有界正线性算子列的逼近阶,得到了相应的Ko-rovkin量化定理。
3.
A necessary and sufficient condition for the direct theorem of the derivatives of positive linear operators is given.
给出了正线性算子导数正定理成立的充要条件，并证明了逆定理。
6) linear positive operators
正线性算子
1.
The iterative approximation of a new sequence of linear positive operators is studied.
讨论了一列新的正线性算子的迭代组合,得到了其渐近公式和一个关于高阶光滑模的误差估计,从而改善了文献中已有的结果。
补充资料：卜算子慢
卜算子慢
词牌名
代表作•宋•张先
溪山别意，烟树去程，日落采苹春晚。
欲上征鞍，更掩翠帘相眄。
惜弯弯浅黛长长眼。
奈画阁欢游，也学狂花乱絮轻散。
水影横池馆。
对静夜无人，月高云远。
一饷凝思，两袖泪痕还满。
恨私书、又逐东风断。
纵西北层楼万尺，望重城那见。
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