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arXiv 0704.2768math.APmath.CV
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Heat Equations与加权$\bar\partial$ -问题

Heat Equations and the Weighted $\bar\partial$-Problem

Andrew Raich

摘要:

本文的目的是建立与$L^2(C^n)$中的加权dbar算子相关的热方程的(相对)基本解的正则性和点态上界。的权重取决于一个参数,我们发现逐点边界热核,以及其衍生物的时间,空间和参数。我们还证明了热半群的取消条件。我们将$n$维情形降阶到一维情形,并利用Duhamel原理和算子的交换子性质得到了一维情形下的估计。作为应用,我们在$C^2$中恢复了多项式模型的热核估计.

英文摘要:

The purpose of this article is to establish regularity and pointwise upper bounds for the (relative) fundamental solution of the heat equation associated to the weighted dbar-operator in $L^2(C^n)$ for a certain class of weights. The weights depend on a parameter, and we find pointwise bounds for heat kernel, as well as its derivatives in time, space, and the parameter. We also prove cancellation conditions for the heat semigroup. We reduce the $n$-dimensional case to the one-dimensional case, and the estimates in one-dimensional case are achieved by Duhamel's principle and commutator properties of the operators. As an application, we recover estimates of heat kernels on polynomial models in $C^2$.

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