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Integral Harnack-type estimates and the rate of extinction for nonlocal doubly nonlinear parabolic equations
Abstract
We establish local boundedness and integral Harnack-type inequalities for locally nonnegative weak solutions to nonlocal doubly nonlinear parabolic equations in the fast diffusion range by combining refined energy estimates with a careful treatment of the nonlocal terms. As an application, quantitative decay estimates for both the local mass and the local supremum of weak solutions are derived near the extinction time. Furthermore, we study the extinction phenomenon for bounded nonnegative weak solutions to the Cauchy--Dirichlet problem and obtain quantitative upper bounds for the extinction time.
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BibTeX
@misc{shang2026integral,
title = {{Integral Harnack-type estimates and the rate of extinction for nonlocal doubly nonlinear parabolic equations}},
author = {Bin Shang and Chao Zhang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.41329},
eprint = {2610.41329},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.41329},
}
RIS
TY - UNPB
TI - Integral Harnack-type estimates and the rate of extinction for nonlocal doubly nonlinear parabolic equations
AU - Bin Shang
AU - Chao Zhang
PY - 2026
DA - 2026/10/30
PB - arXiv
DO - 10.48550/arxiv.2610.41329
UR - https://arxiv.org/abs/2610.41329
AB - We establish local boundedness and integral Harnack-type inequalities for locally nonnegative weak solutions to nonlocal doubly nonlinear parabolic equations in the fast diffusion range by combining refined energy estimates with a careful treatment of the nonlocal terms. As an application, quantitative decay estimates for both the local mass and the local supremum of weak solutions are derived near the extinction time. Furthermore, we study the extinction phenomenon for bounded nonnegative weak solutions to the Cauchy--Dirichlet problem and obtain quantitative upper bounds for the extinction time.
ER -