Quasi-positive holomorphic sectional curvature and rational connectedness
Quasi-positive holomorphic sectional curvature and rational connectedness
Let be a compact Kähler manifold. Suppose it has a smooth Hermitian metric with quasi-positive holomorphic sectional curvature, or with uniformly RC-quasi-positive .
Quasi-positive curvature conjecture. Then is projective and rationally connected.
The paper proves related results under stronger curvature hypotheses, including nonnegative holomorphic sectional curvature together with positivity away from a suitable subset, and everywhere positive holomorphic sectional curvature. The stated quasi-positive version is left as a conjecture.
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Primary source
Xiaokui Yang, “RC-positive metrics on rationally connected manifolds”, arXiv:1807.03510 (2018).
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