A New Characterization of $$L^2$$ -Domains of Holomorphy with Null Thin Complements via $$L^2$$ -Optimal Conditions

Zhuo Liu, Xujun Zhang
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Abstract

In this paper, we show that the \(L^2\)-optimal condition implies the \(L^2\)-divisibility of \(L^2\)-integrable holomorphic functions. As an application, we offer a new characterization of bounded \(L^2\)-domains of holomorphy with null thin complements using the \(L^2\)-optimal condition, which appears to be advantageous in addressing a problem proposed by Deng-Ning-Wang. Through this characterization, we show that a domain in a Stein manifold with a null thin complement, admitting an exhaustion of complete Kähler domains, remains Stein. By the way, we construct an \(L^2\)-optimal domain that does not admit any complete Kähler metric.

通过 $$L^2$$ -最优条件对具有空薄互补性的 $$L^2$$ -全形域的新表征
在本文中,我们证明了 \(L^2\)-optimal 条件意味着 \(L^2\)-integrable holomorphic functions 的 \(L^2\)-divisibility.作为一个应用,我们利用\(L^2\)-最优条件为具有空薄补的有界\(L^2\)-全形域提供了一个新的特征,这在解决王登宁提出的一个问题上似乎是有利的。通过这一表征,我们证明了斯坦流形中具有空薄补的域,在容许穷尽完全凯勒域的情况下,仍然是斯坦的。顺便说一下,我们构造了一个不接受任何完整凯勒度量的(L^2\)最优域。
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