Positive sectional curvature, symmetry and Chern's conjecture
Positive sectional curvature, symmetry and Chern's conjecture
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正截面曲率、对称性和陈省身猜想
DOI:
10.1016/j.difgeo.2008.10.004
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发表时间:
2009-02
影响因子:
0.5
通讯作者:
Sun, Hongwei
中科院分区:
文献类型:
--
作者:
Wang, Yusheng;Sun, Hongwei
Let M be a n-manifold of positive sectional curvature. Suppose that M admits an isometrical torus Tk-action with k>n+18+1. The main results of the paper are: (1) the fundamental group π1(M) contains no Zp⊕Zpsubgroup with p prime and p≠3 (a partial positive answer to Chern's conjecture); (2) the 2-order element of π1(M) belongs to the center of π1(M).
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