Sharp Schauder Estimates for some Degenerate Kolmogorov Equations

Abstract : We provide here some sharp Schauder estimates for degenerate PDEs of Kolmogorov type when the coefficients lie in some suitable anisotropic Hölder spaces and the first order term is non-linear and unbounded. We proceed through a perturbative approach based on forward parametrix expansions. Due to the low regularizing properties of the degenerate variables, for the procedure to work, we heavily exploit duality results between appropriate Besov spaces. Our method can be seen as constructive and provides, even in the non-degenerate case, an alternative approach to Schauder estimates.
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https://hal.archives-ouvertes.fr/hal-01906573
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Submitted on : Friday, October 26, 2018 - 10:50:00 PM
Last modification on : Sunday, November 11, 2018 - 1:08:22 AM
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  • HAL Id : hal-01906573, version 1
  • ARXIV : 1810.12227

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Paul-Eric Chaudru de Raynal, Stéphane Menozzi, Igor Honoré. Sharp Schauder Estimates for some Degenerate Kolmogorov Equations. 2018. ⟨hal-01906573⟩

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