DECOMPOSITION IN DIRECT SUM OF SEMINORMED VECTOR SPACES AND MAZUR-ULAM THEOREM

被引:0
|
作者
Dovgoshey, Oleksiy [1 ,2 ]
Prestin, Juergen [3 ]
Shevchuk, Igor [4 ]
机构
[1] Inst Appl Math & Mech NASU, Dept Theory Funct, UA-84100 Slovyansk, Ukraine
[2] Univ Turku, Dept Math & Stat, FI-20014 Turku, Finland
[3] Univ Lubeck, Inst Math, D-23562 Lubeck, Germany
[4] Tars Shevchenko Natl Univ Kyiv, Fac Mech & Math, UA-01601 Kyiv, Ukraine
关键词
Seminormed vector space; isometric embedding; direct sum; Mazur-Ulam theorem;
D O I
10.1515/ms-2024-0010
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
It was proved by S. Mazur and S. Ulam in 1932 that every isometric surjection between normed real vector spaces is affine. We generalize the Mazur-Ulam theorem and find necessary and sufficient conditions under which distance-preserving mappings between seminormed real vector spaces are linear. (c) 2024 Mathematical Institute Slovak Academy of Sciences
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页码:143 / 150
页数:8
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