一个不动点定理在最佳逼近理论中的应用

An Application of Fixed Point Theorem in Approximation Theory

本文推广了Habiniak的一个不动点定理,得到了一个最佳逼近定理,从而改进和推广了文献[1,2]中的主要结果。

The object of the present paper is a generalization of Habiniak's fixed point theorem and its application to best approximation, we obtain a theorem which generalizcs and improves the corresponding result in [1, 2].