空间几何常数与集值非扩张映射的不动点

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空间几何常数与集值非扩张映射的不动点左占飞重庆三峡学院数学与统计学院重庆 404100 Some Geometric Constants and Fixed Points for Multivalued Nonexpansive Mappings Zhan Fei ZUODepartment of Mathematics and Statistics, Chongqing Three Gorges University, Wanzhou 404100, P. R. China

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摘要本文利用凸刻画系数和正规结构系数，詹姆斯型常数和García-Falset系数之间的关系式，得到了空间上集值非扩张映射存在不动点的一些充分条件，这些结论不仅改进了一些文献中的结果，而且也对一些公开问题给出了解答.

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收稿日期: 2020-03-09

MR (2010):

O177.2

基金资助:重庆市自然科学基金基础研究与前沿探索专项面上项目（cstc2019jcyj-msxmX0289）及重庆市科委基础研究与前沿探索（cstc2018jcyjAX0773）；重庆三峡学院人才引进项目

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左占飞. 空间几何常数与集值非扩张映射的不动点[J]. 数学学报, 2021, 64(2): 281-288. Zhan Fei ZUO. Some Geometric Constants and Fixed Points for Multivalued Nonexpansive Mappings. Acta Mathematica Sinica, Chinese Series, 2021, 64(2): 281-288.

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