Dimension estimate and existence of holomorphic sections with polynomial growth on gradient Kähler Ricci shrinkers

2024/11/19 by Fei He, He, Fei, Jianyu Ou +1
Mathematics · #Geometry and complex manifolds #Geometric Analysis and Curvature Flows #Holomorphic and Operator Theory

paper · pdf · doi:10.48550/arxiv.2411.12171

Abstract

We prove an upper bound for the dimension of the linear space of holomorphic functions with polynomial growth on gradient Kähler Ricci shrinkers with bounded curvature. The upper bound is given as a power function of the growth rate. Similar results hold for holomorphic (p, 0)-forms, and holomorphic sections of the pluri-anticanonical line bundle K_M^-q. We also prove the existence of holomorphic sections of K_M^-q with polynomial growth when the Kähler Ricci shrinker is asymptotically conical, provided q is sufficiently large; as an application, we show that the Kodaira map constructed using such sections is a holomorphic embbedding into a complex projective space.

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