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n-赋范线性空间上的Aleksandrov问题

The Aleksandrov problem in n-normed linear spaces
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摘要 在n-赋范线性空间上研究Aleksandrov问题得到,如果满射f:X→Y满足当‖x1-x0,…,xn-x0‖≤1时,有‖f(x1)-f(x0),…,f(xn)-f(x0)‖≤‖x1-x0,…,xn-x0‖,且当‖x1-x0,…,xn-x0‖≥α时,有‖f(x1)-f(x0),…,f(xn)-f(x0)‖≥α,则f为n-等距. In this paper,we study the Aleksandrov problem in n-normed linear spaces and prove that if a surjection f:X→Y satisfies‖f( x1)- f( x0),…,f(xn)- f( x0)‖≤‖x1- x0,…,xn- x0‖with‖ x1- x0,…,xn- x0‖≤1 and‖f( x1)- f( x0),…,f(xn)- f( x0)‖≥α with‖x1- x0,…,xn- x0‖≥α,then f is n-isometry.
出处 《天津理工大学学报》 2014年第4期56-59,共4页 Journal of Tianjin University of Technology
基金 国家自然科学基金(11026177)
关键词 n-赋范线性空间 n-等距 Aleksandrov问题 n-normed linear spaces n-isometry the Aleksandrov problem
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