给出一种构造组合线性逼近算子的方法。由此可得到具有特殊逼近性质的线性算子。
A method to construct a kind of combinatorial linear approximation operators is given and some linear operators which have special approximation properties are obtained.
给出了线性算子逼近球面函数的逼近阶。
The approximation estimates of spherical functions by linder operators are given.
线性算子为紧线性算子必须且仅须它可由一列有限秩连续齐性算子一致逼近。
It follows that a linear operator is a compact linear operator iff it an be approximated uniformly by a sequence of finite rank continuous homogeneous operators.
对于一类函数给出了Gauss -Weierstrass算子线性组合一致逼近的定理。
The author gave a reverse theorem of uniform approximation for the combination Gauss-Weierstrass operators on a class of functions.
给出了一类多元线性正算子线性组合在一致逼近意义下的特征刻划。
Weighted approximation by a class of linear combinations of Bernstein type operators;
给出了一类多元线性正算子线性组合在一致逼近意义下的特征刻划。
Weighted approximation by a class of linear combinations of Bernstein type operators;
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