Affine hypersurfaces with self congruent center map

Affine hypersurfaces with self congruent center map
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具有自全等中心图的仿射超曲面

DOI:
10.1016/j.jmaa.2015.10.025
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发表时间:
2016-03
影响因子:
1.3
通讯作者:
Li Cece
Li Cece
中科院分区:
数学3区
文献类型:
--
作者:
Li Cece

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In this paper, we study locally strictly convex affine hypersurfaces for which the center map is centroaffine congruent with the original hypersurface. By the equiaffine support function ρ, we show that the hypersurface is locally isometric to a warped product R×| ρ| N, where the gradient direction of ρ is along R. As a main result, we complete the classification when gradρ is the eigenvector of affine shape operator, which shows how to explicitly construct such hypersurfaces starting from one (or two) low dimensional affine hypersphere (s).
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