Li–Yau type estimates for a nonlinear parabolic equation on complete manifolds

Li–Yau type estimates for a nonlinear parabolic equation on complete manifolds
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DOI:
10.1016/j.jmaa.2010.03.055
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发表时间:
2010-09
影响因子:
1.3
通讯作者:
Jia-Yong Wu
Jia-Yong Wu
中科院分区:
数学3区
文献类型:
--
作者:
Jia-Yong Wu

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令 (M,g) 为完全非紧黎曼流形,其 m 维 Bakry-Émery Ricci 曲率下界。在本文中,我们给出了 M×[0,τ] 中一般非线性抛物型方程正解的局部 Li-Yau 型梯度估计,其中 a∈R, 是 C2 平滑函数,q=q(x,t) 是一个函数,它概括了许多先前众所周知的梯度估计结果。
Let (M,g) be a complete noncompact Riemannian manifold with the m-dimensional Bakry–Émery Ricci curvature bounded below. In this paper, we give a local Li–Yau type gradient estimate for the positive solutions to a general nonlinear parabolic equation in M×[0,τ], where a∈R, ϕ is a C2-smooth function and q=q(x,t) is a function, which generalizes many previous well-known gradient estimate results.