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An Elliptic Gradient Estimate for A Non-homogeneous Heat Equation on Complete Noncompact Manifolds

An Elliptic Gradient Estimate for A Non-homogeneous Heat Equation on Complete Noncompact Manifolds
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摘要 Let M be an n-dimensional complete noncompact Riemannian manifold. In this paper, we will give the elliptic gradient estimate for positive smooth solutions to the non-homogeneous heat equation(?_t-△)u(x, t) = A(x, t)when the metric evolves under the Ricci flow. As applications, we get Harnack inequalities to compare solutions at the same time. Let M be an n-dimensional complete noncompact Riemannian manifold. In this paper, we will give the elliptic gradient estimate for positive smooth solutions to the non-homogeneous heat equation(?t-△)u(x, t) = A(x, t)when the metric evolves under the Ricci flow. As applications, we get Harnack inequalities to compare solutions at the same time.
作者 JI Xiang
机构地区 Nantong Normal College
出处 《Chinese Quarterly Journal of Mathematics》 2018年第1期61-67,共7页 数学季刊(英文版)
关键词 Non-homogeneous heat equation Ricci flow Bochner formula elliptic type gradient estimate Harnack inequality Non-homogeneous heat equation Ricci flow Bochner formula elliptic type gradient estimate Harnack inequality
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