Quasi-positive holomorphic sectional curvature and rational connectedness

From papers

Let XX be a compact Kähler manifold. Suppose it has a smooth Hermitian metric ω\omega with quasi-positive holomorphic sectional curvature, or with uniformly RC-quasi-positive (TX,ω)(T_X,\omega).

Quasi-positive curvature conjecture. Then XX 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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Sources & referencesView supporting material

Primary source

Xiaokui Yang, “RC-positive metrics on rationally connected manifolds”, arXiv:1807.03510 (2018).

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