Functional inequalities for a class of nonlocal hypoelliptic equations of Hormander type

被引：8

作者：

Garofalo, Nicola ^{[1
]}

Tralli, Giulio ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Ingn Civile & Ambientale DICEA, Via Marzolo 9, I-35131 Padua, Italy

来源：

NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS | 2020年 / 193卷 / 193期

关键词：

Hormander operators; Kolmogorov equation; Fractional powers; Besov spaces; Poincare inequalities; EUCLIDEAN N-SPACE; HARNACK INEQUALITY; LIPSCHITZ-SPACES; DISTRIBUTIONS; OPERATORS; KERNEL;

D O I：

10.1016/j.na.2019.06.026

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We consider a class of second-order partial differential operators A of Hormander type, which contain as a prototypical example a well-studied operator introduced by Kolmogorov in the '30s. We analyse some properties of the nonlocal operators driven by the fractional powers of A, and we introduce some interpolation spaces related to them. We also establish sharp pointwise estimates of Harnack type for the semigroup associated with the extension operator. Moreover, we prove both global and localised versions of Poincare inequalities adapted to the underlying geometry. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：23

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