Gradient estimates for a nonlinear parabolic equation under Ricci flow

Gradient estimates for a nonlinear parabolic equation under Ricci flow
复制标题

DOI:
10.57262/die/1356628827
复制
发表时间:
2008-06
影响因子:
1.4
通讯作者:
S. Hsu
S. Hsu
中科院分区:
数学4区
文献类型:
--
作者:
S. Hsu

文献摘要

被引文献

相似文献

设(M,g(t))$,$0\le t\le T$,是一个n维完备非紧流形,$n\ge 2$,具有有界曲率和度量$g(t)$由Ricci流$\frac{\partial g_{ij}}{\partial t}=-2 R_{ij}$演化.我们推广了L.妈妈和Y。Yang和证明了非线性抛物方程$\frac{\1 u}{\1 t}=\Delta u-au\log u-qu$正解的局部梯度估计,其中$a\in\R$是常数,$q$是M\times [0,T]$上的光滑函数.
Let $(M,g(t))$, $0\le t\le T$, be a n-dimensional complete noncompact manifold, $n\ge 2$, with bounded curvatures and metric $g(t)$ evolving by the Ricci flow $\frac{\partial g_{ij}}{\partial t}=-2R_{ij}$. We will extend the result of L. Ma and Y. Yang and prove a local gradient estimate for positive solutions of the nonlinear parabolic equation $\frac{\1 u}{\1 t}=\Delta u-au\log u-qu$ where $a\in\R$ is a constant and $q$ is a smooth function on $M\times [0,T]$.