arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0704.1372math.AP
收藏

系数与时间无关的二阶抛物型方程组基本解的Gauss估计

Gaussian estimates for fundamental solutions of second order parabolic systems with time-independent coefficients

Seick Kim

摘要:

Auscher,McIntosh和Tchamitchian研究了$\mathbb{R}^n$上具有复有界可测系数的二阶散度型椭圆算子的热核.特别是,在$n=2$的情况下,他们获得了高斯上界估计的热核不施加进一步的假设的系数。研究了具有有界、可测、与时间无关的系数的散度型二阶抛物型方程组的基本解,并将其结果推广到抛物型方程组.

英文摘要:

Auscher, McIntosh and Tchamitchian studied the heat kernels of second order elliptic operators in divergence form with complex bounded measurable coefficients on $\mathbb{R}^n$. In particular, in the case when $n=2$ they obtained Gaussian upper bound estimates for the heat kernel without imposing further assumption on the coefficients. We study the fundamental solutions of the systems of second order parabolic equations in the divergence form with bounded, measurable, time-independent coefficients, and extend their results to the systems of parabolic equations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑