Journal
JOURNAL OF DIFFERENTIAL EQUATIONS
Volume 340, Issue -, Pages 557-591Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jde.2022.09.007
Keywords
Fundamental solution; Parabolic equation in non-divergence form; Dini mean oscillation
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Funding
- Simons Foundation [709545]
- Simons fellowship [007638]
- NSF [DMS-2055244]
- National Research Foundation of Korea [NRF-2019R1A2C2002724, NRF-2022R1A2C1003322]
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We construct the fundamental solution of second order parabolic equations in non-divergence form by assuming that the coefficients are of Dini mean oscillation in the spatial variables. We also prove that the fundamental solution satisfies a sub-Gaussian estimate. In the case where the coefficients are Dini continuous in the spatial variables and measurable in the time variable, we establish Gaussian bounds for the fundamental solutions. We present a method that works equally for second order parabolic systems in non-divergence form.
We construct the fundamental solution of second order parabolic equations in non-divergence form under the assumption that the coefficients are of Dini mean oscillation in the spatial variables. We also prove that the fundamental solution satisfies a sub-Gaussian estimate. In the case when the coefficients are Dini continuous in the spatial variables and measurable in the time variable, we establish the Gaussian bounds for the fundamental solutions. We present a method that works equally for second order parabolic systems in non-divergence form.(c) 2022 Elsevier Inc. All rights reserved.
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