Yau's projectivity and rational connectedness conjecture for positively curved Kähler manifolds

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Let MM be a compact complex manifold admitting a Kähler metric ω\omega with positive holomorphic sectional curvature. The holomorphic sectional curvature along a nonzero V∈T1,0MV\in T^{1,0}M is

H(V)=R(V,V‾,V,V‾)∣V∣ω4,H(V)=\frac{R(V,\overline{V},V,\overline{V})}{\lvert V\rvert_{\omega}^4},

where RR is the Riemannian curvature tensor of ω\omega. Yau's conjecture. If MM admits such a metric, then MM is projective and rationally connected. This conjecture gives a geometric characterization of rational connectedness in terms of positive holomorphic sectional curvature. The supplied text does not state whether it has been resolved.

References

Primary source

Shiyu Zhang and Xi Zhang, “On the structure of compact Kähler manifolds with nonnegative holomorphic sectional curvature”, arXiv:2311.18779 (2024).

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