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arXiv 2009.02838math.AP
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非线性抛物型算子的整体梯度估计

Global gradient estimates for nonlinear parabolic operators

Serena Dipierro, Zu Gao, Enrico Valdinoci

摘要:

考虑一类由非线性扩散算子驱动的抛物型方程,得到了方程所在区域的梯度估计。该估计取决于方程的结构常数、周围空间的几何形状以及初始和边界数据。作为一个副产品,人们很容易得到一个通用的内估计,不依赖于抛物线数据。考虑的设置包括采购条款和一般扩散系数。据我们所知,这些结果是新的,即使是在欧几里德环境中,虽然我们在这里也处理一个完整的黎曼流形的情况。

英文摘要:

We consider a parabolic equation driven by a nonlinear diffusive operator and we obtain a gradient estimate in the domain where the equation takes place. This estimate depends on the structural constants of the equation, on the geometry of the ambient space and on the initial and boundary data. As a byproduct, one easily obtains a universal interior estimate, not depending on the parabolic data. The setting taken into account includes sourcing terms and general diffusion coefficients. The results are new, to the best of our knowledge, even in the Euclidean setting, though we treat here also the case of a complete Riemannian manifold.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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