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arXiv 0705.2810math.AP
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一类退化Kolmogorov方程的整体Schauder估计

Global Schauder estimates for a class of degenerate Kolmogorov equations

Enrico Priola

摘要:

考虑了一类可能退化的二阶椭圆算子$\cal A$在$\R^n$上的存在性.这类算子包括亚椭圆型的Ornstein-Uhlenbeck型算子,它具有一个附加的一阶项和无界系数。在Hölder空间中建立了椭圆型方程和含${\cal A}$的抛物型Cauchy问题的整体Schauder估计. Hölder函数空间是关于与算子$\cal A$相关的非欧几里德度量定义的。

英文摘要:

We consider a class of possibly degenerate second order elliptic operators $\cal A$ on $\R^n$. This class includes hypoelliptic Ornstein-Uhlenbeck type operators having an additional first order term with unbounded coefficients. We establish global Schauder estimates in Hölder spaces both for elliptic equations and for parabolic Cauchy problems involving ${\cal A}$. The Hölder function spaces are defined with respect to a non-euclidean metric related to the operator $\cal A$.

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