The Hopf conjecture for positively curved manifolds with discrete abelian group actions
The Hopf conjecture for positively curved manifolds with discrete abelian group actions
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具有离散阿贝尔群作用的正曲流形的 Hopf 猜想
DOI:
10.1016/j.difgeo.2007.11.023
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发表时间:
2008-06
影响因子:
0.5
通讯作者:
Wang, Yusheng
中科院分区:
文献类型:
--
作者:
Su, Xiaole;Wang, Yusheng
Let M be a closed even n-manifold of positive sectional curvature. The main result asserts that the Euler characteristic of M is positive, if M admits an isometric Zpk-action with prime p⩾p(n) (a constant depending only on n) and k satisfies any one of the following conditions: (i) k⩾n−48 and n≠12, 18 or 20; (ii) k⩾n−210, and n≡0 mod 4 with n≠12 or 20; (iii) k⩾n+412, and n≡0,4 or 12 mod 20 with n≠20. This generalizes some results in [T. Püttmann, C. Searle, The Hopf conjecture for manifolds with low cohomogeneity or high symmetry rank, Proc. Amer. Math. Soc. 130 (2002) 163–166; X. Rong, Positively curved manifolds with almost maximal symmetry rank, Geom. Dedicata 59 (2002) 157–182; X. Rong, X. Su, The Hopf conjecture for positively curved manifolds with abelian group actions, Comm. Cont. Math. 7 (2005) 121–136].
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DOI:
10.1090/s0002-9939-01-06039-7
发表时间:
2001-06
期刊:
--
影响因子:
--
作者:
Thomas Puettmann;C. Searle
通讯作者:
Thomas Puettmann;C. Searle
影响因子:
0.7
作者:
Ken'ichi Ohshika
通讯作者:
Ken'ichi Ohshika
影响因子:
3.7
作者:
Burkhard Wilking
通讯作者:
Burkhard Wilking
影响因子:
0.9
作者:
M. Gromov
通讯作者:
M. Gromov
影响因子:
0.7
作者:
F. Fang;S. Mendonça;Xiaochun Rong
通讯作者:
F. Fang;S. Mendonça;Xiaochun Rong