中文

$\mathbb{R}\times\mathbb{C}$ 中热方程相对基本解的逐点估计

复变函数 2007-12-11 v1 偏微分方程分析

摘要

p:CRp:C\to R 为次调和、非调和多项式,τR\tau\in R 为参数。定义 Zˉτp=zˉ+τpzˉ=eτppzˉeτp\bar Z_{\tau p} = \partial_{\bar z} + \tau p_{\bar z} = e^{-\tau p} p_{\bar z} e^{\tau p},其为 L2(C)L^2(C) 上闭的、稠定算子。若 τp=ZˉτpZˉτp\Box_{\tau p} = \bar Z_{\tau p}\bar Z^*_{\tau p}~τp=ZˉτpZˉτp\tilde\Box_{\tau p} = \bar Z^*_{\tau p}\bar Z_{\tau p},我们求解热方程 su+τpu=0\partial_s u + \Box_{\tau p} u=0u(0,z)=f(z)u(0,z)=f(z)su~+~τpu~=0\partial_s \tilde u + \tilde\Box_{\tau p} \tilde u=0u~(0,z)=f~(z)\tilde u(0,z) = \tilde f(z)。我们通过热半群写出解,并说明解可写为对分布核的积分。我们证明这些核在对角线 {(s,z,w):s=0andz=w}\{(s,z,w) : s=0 \text{and} z=w\} 之外为 CC^\infty,并给出核及其导数的逐点界。

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引用

@article{arxiv.math/0605349,
  title  = {Pointwise Estimates for Relative Fundamental Solutions of Heat Equations in $\mathbb{R}\times\mathbb{C}$},
  author = {Andrew Raich},
  journal= {arXiv preprint arXiv:math/0605349},
  year   = {2007}
}

备注

25 pages