Rank three geometry and positive curvature
Rank three geometry and positive curvature
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三阶几何和正曲率
DOI:
10.4310/cag.2016.v24.n3.a3
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发表时间:
2016-07
影响因子:
0.7
通讯作者:
Thorbergsson Gudlaugur
中科院分区:
文献类型:
--
作者:
Fang Fuquan;Grove Karsten;Thorbergsson Gudlaugur
An axiomatic characterization of buildings of type $\CC_3$ due to Tits is used to prove that any cohomogeneity two polar action of type $\CC_3$ on a positively curved simply connected manifold is equivariantly diffeomorphic to a polar action on a rank one symmetric space. This includes two actions on the Cayley plane whose associated $\CC_3$ type geometry is not covered by a building.
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