Under several suitable transformations, the problem of positive solutions for set-valued condensing mapping equation in an ordered locally convex topological space is studied by some homotopy method.
本文用某种同伦方法，借助于一些适当的变换，讨论了有序的局部凸拓扑线性空间中集值凝聚映象方程的正解问题。
The sufficient and necessary conditions of two single-valued mapping and a set-valued mapping with the only common fixed point in complete metric space are discussed.
研究了完备度量空间中两个单值映象和一个集值映象有唯一公共不动点的充要条件，改进了已有文献的有关结果。
An almost lower semicontinuity for a set-valued mapping with image space being a topological vector space.
本文对像空间为一般拓扑向量空间的集值映射，给出了所谓几乎下半连续的概念；
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