Smooth Lipschitz retractions of starlike bodies onto their boundaries in infinite-dimensional Banach spaces

被引:4
|
作者
Azagra, D [1 ]
Boiso, MC
机构
[1] Univ Complutense Madrid, Dept Anal Matemat, Fac Ciencias Matemat, E-28040 Madrid, Spain
[2] Equipe Anal, F-75005 Paris, France
[3] Univ Sevilla, Dept Anal Matemat, Seville, Spain
关键词
D O I
10.1017/S0024609301008062
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let X be an infinite-dimensional Banach space, and let A be a CP Lipschitz bounded starlike body (for instance the unit ball of a smooth norm). We prove that: (1) the boundary partial derivativeA is C-P Lipschitz contractible; (2) there is a C-P Lipschitz retraction from A onto partial derivativeA; (3) there is a C-P Lipschitz map T : A --> A with no approximate fixed points.
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页码:443 / 453
页数:11
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