Holomorphic sectional curvature, nefness and Miyaoka–Yau type inequality
Holomorphic sectional curvature, nefness and Miyaoka–Yau type inequality
复制标题
全纯截面曲率、粗度和Miyaoka-Yau型不等式
DOI:
10.1007/s00209-020-02636-z
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发表时间:
2018
影响因子:
0.8
通讯作者:
Yashan Zhang
中科院分区:
文献类型:
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作者:
Yashan Zhang
On a compact Kähler manifold, we introduce a notion of almost nonpositivity for the holomorphic sectional curvature, which by definition is weaker than the existence of a Kähler metric with semi-negative holomorphic sectional curvature. We prove that a compact Kähler manifold of almost nonpositive holomorphic sectional curvature has a nef canonical line bundle, contains no rational curves and satisfies some Miyaoka-Yau type inequalities. In the course of the discussions, we attach a real value to any fixed Kähler class which, up to a constant factor depending only on the dimension of manifold, turns out to be an upper bound for the nef threshold.
DOI:
10.1090/gsm/077
发表时间:
2018
期刊:
--
影响因子:
--
作者:
B. Chow;P. Lu;Lei Ni
通讯作者:
B. Chow;P. Lu;Lei Ni