Gradient estimates for a nonlinear parabolic equation on Riemannian manifolds
Gradient estimates for a nonlinear parabolic equation on Riemannian manifolds
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黎曼流形上非线性抛物线方程的梯度估计
DOI:
10.1090/s0002-9939-08-09398-2
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发表时间:
2008-06
影响因子:
1
通讯作者:
Yang, Yunyan
中科院分区:
文献类型:
--
作者:
Yang, Yunyan
AbstractLet M be a complete noncompact Riemannian manifold. We consider gradient estimates for the positive solutions to the following nonlinear parabolic equation
$$ \frac{\partial u}{\partial t} = \Delta _{f}u +au\,{\rm log}\, u + bu$$ on $${M \times [0, + \infty)}$$, where a, b are two real constants, f is a smooth real-valued function on M and $${\Delta_f = \Delta - \nabla f \nabla}$$. Under the assumption that the N-Bakry-Emery Ricci tensor is bounded from below by a negative constant, we obtain a gradient estimate for positive solutions of the above equation. As an application, we obtain a Harnack inequality and a Gaussian lower bound of the heat kernel of such an equation.
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影响因子:
0.7
作者:
Chen, Li;Chen, Wenyi
通讯作者:
Chen, Wenyi
DOI:
--
发表时间:
2008
期刊:
--
影响因子:
--
作者:
Li Ma;Baiyu Liu
通讯作者:
Li Ma;Baiyu Liu
DOI:
--
发表时间:
2003-03
期刊:
arXiv: Differential Geometry
影响因子:
--
作者:
G. Perelman
通讯作者:
G. Perelman
DOI:
--
发表时间:
2010
期刊:
--
影响因子:
--
作者:
B. Qian
通讯作者:
B. Qian
影响因子:
3.8
作者:
Thierry Aubin
通讯作者:
Thierry Aubin