On the Weighted Orthogonal Ricci curvature

We introduce the weighted orthogonal Ricci curvature – a two-parameter version of Ni–Zheng’s orthogonal Ricci curvature. This curvature serves as a very natural object in the study of the relationship between the Ricci curvature(s) and the holomorphic sectional curvature. In particular, in determining optimal curvature constraints for a compact Kähler manifold to be projective. In this direction, we prove a number of vanishing theorems using the weighted orthogonal Ricci curvature(s) in both the Kähler and Hermitian category.

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