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Global sharp gradient estimates for a nonlinear parabolic equation on Riemannian manifolds

  • Le Huy Chuan , Nguyen Thac Dung EMAIL logo and Nguyen Tien Manh EMAIL logo
Published/Copyright: October 27, 2023

Abstract

In this paper, we employ the techniques in [C. Cavaterra, S. Dipierro, Z. Gao and E. Valdinoci, Global gradient estimates for a general type of nonlinear parabolic equations, J. Geom. Anal. 32 2022, 2, Paper No. 65] and the approach in [H. T. Dung and N. T. Dung, Sharp gradient estimates for a heat equation in Riemannian manifolds, Proc. Amer. Math. Soc. 147 2019, 12, 5329–5338] to derive sharp gradient estimates for a positive solution to the heat equation

u t = Δ u + a u log u

in a complete noncompact Riemannian manifold (where a is a real constant). This is an extension of the gradient estimates of Dung and Dung.

MSC 2020: 53C40; 53C20; 58E20

Award Identifier / Grant number: TN.23.03

Funding statement: Nguyen Tien Manh is supported by the project “Gradient estimate for nonlinear parabolic type equations on manifolds” under grant number TN.23.03. He would like to express his thanks to VNU – University of Science in Hanoi for financial support.

References

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Received: 2023-03-23
Accepted: 2023-09-03
Published Online: 2023-10-27
Published in Print: 2024-08-01

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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