Sharp Dimension Estimates of Holomorphic Functions and Rigidity

Details Sharp Dimension Estimates of Holomorphic Functions and Rigidity Sharp Dimension Estimates of Holomorphic Functions and Rigidity

2003-11-11

arxiv.org/abs/math/0311164v1

Mathematics

Differential Geometry

24 pages

Scientific paper

Let $M^n$ be a complete noncompact K$\ddot{a}$hler manifold of complex dimension $n$ with nonnegative holomorphic bisectional curvature. Denote by $\mathcal{O}$$_d(M^n)$ the space of holomorphic functions of polynomial growth of degree at most $d$ on $M^n$. In this paper we prove that $$dim_{\mathbb{C}}{\mathcal{O}}_d(M^n)\leq dim_{\mathbb{C}}{\mathcal{O}}_{[d]}(\mathbb{C}^n),$$ for all $d>0$, with equality for some positive integer $d$ if and only if $M^n$ is holomorphically isometric to $\mathbb{C}^n$. We also obtain sharp improved dimension estimates when its volume growth is not maximal or its Ricci curvature is positive somewhere.

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