A NEW 3-PARAMETER CURVATURE CONDITION PRESERVED BY RICCI FLOW
A NEW 3-PARAMETER CURVATURE CONDITION PRESERVED BY RICCI FLOW
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RICCI 流保留的新三参数曲率条件
DOI:
10.4134/jkms.2013.50.4.829
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发表时间:
2013-07
期刊:
影响因子:
--
通讯作者:
Xiang Gao
中科院分区:
文献类型:
--
作者:
Xiang Gao
In this paper, we firstly establish a family of curvature invariant conditions lying between the well-known 2-nonnegative curvature operator and nonnegative curvature operator along the Ricci flow. These conditions are defined by a set of inequalities involving the first four eigenvalues of the curvature operator, which are named as 3-parameter -nonnegative curvature conditions. Then a related rigidity property of manifolds with 3-parameter -nonnegative curvature operators is also derived. Based on these, we also obtain a strong maximum principle for the 3-parameter -nonnegativity along Ricci flow.
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