Positive curvature operator, projective manifold and rational connectedness
Differential Geometry
2019-06-18 v2
Abstract
In his recent work \cite{Y1}, X. Yang proved a conjecture raised by Yau in 1982 (\cite{Yau82}), which states that any compact K\"{a}hler manifold with positive holomorphic sectional curvature must be projective. In this note, we prove that any compact Hermitian manifold with positive real bisectional curvature, its hodge number . In particular, if in addition is K\"{a}hler, then is projective. Also, it is rationally connected manifold when . This partially confirms the conjecture 1.11 \cite{Y1} which is proposed by X. Yang.
Cite
@article{arxiv.1905.04894,
title = {Positive curvature operator, projective manifold and rational connectedness},
author = {Kai Tang},
journal= {arXiv preprint arXiv:1905.04894},
year = {2019}
}
Comments
9 pages. arXiv admin note: text overlap with arXiv:1708.06713, arXiv:1610.07165, arXiv:1802.08732 by other authors