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

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

2007-04-11

arxiv.org/abs/0704.1372v1

Trans. Amer. Math. Soc. 360 (2008), 6031-6043.

Mathematics

Analysis of PDEs

Scientific paper

10.1090/S0002-9947-08-04485-1

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.

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