本文给出了定义在星形集上的单值(集值)非扩张映象的几个不动点定理。
In this paper we obtain some fixed point theorems of nonexpansive mappings definited on star-shape set.
本文对单值对称非线性特性的描述函数进行了分析，推导出了简化计算描述函数的方法(引理1、引理2、定理1)。
In this paper the describing function of single-valued symmetric nonlinear characteristics is analysed and simplify methods (Lemma 1. Lemma 2. Theorem 1) Dcaculating description function are proved.
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