Yang's Hermitian generalization for exterior powers of the tangent bundle

Let XX be a compact complex manifold of complex dimension n>2n>2, and suppose that XX has a Hermitian metric with positive holomorphic sectional curvature. A Hermitian vector bundle is RC-positive if it admits a smooth metric with the RC-positivity property.

Yang's conjecture. For every integer pp with 1<p<n1<p<n, the bundle pTX\bigwedge^p T_X admits a smooth RC-positive metric. In particular, if XX is Kähler, then XX is a projective and rationally connected manifold.

The paper's theorem establishes vanishing results and partially confirms this conjecture under the stronger assumption of positive real bisectional curvature. The conjecture remains unresolved in the stated general Hermitian setting.

Sources & referencesView supporting material

Primary source

Kai Tang, “Positive curvature operator, projective manifold and rational connectedness”, arXiv:1905.04894 (2019).

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