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arXiv 1904.03073math.APmath.RT
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分数阶Branson-Gover算子的一个延拓问题

An extension problem related to the fractional Branson-Gover operators

Jan Frahm, Bent Ørsted, Genkai Zhang

摘要:

Branson-Gover算子是作用在微分形式上的偶次共形不变的微分算子。它们可以被称为分数阶Branson-Gover算子的共形不变积分算子的全纯族插值。对于欧几里得空间我们表明,分数Branson-Gover算子可以得到的Dirichlet-到-Neumann算子的某些共形不变的边值问题,推广的工作Caffarelli-Silvestre的分数Laplacian微分形式。对相关的边值问题进行了详细的研究,找到了适当的Sobolev型空间,在此空间中存在唯一解,得到了解算子的显式积分核及其一些性质.

英文摘要:

The Branson-Gover operators are conformally invariant differential operators of even degree acting on differential forms. They can be interpolated by a holomorphic family of conformally invariant integral operators called fractional Branson-Gover operators. For Euclidean spaces we show that the fractional Branson-Gover operators can be obtained as Dirichlet-to-Neumann operators of certain conformally invariant boundary value problems, generalizing the work of Caffarelli-Silvestre for the fractional Laplacians to differential forms. The relevant boundary value problems are studied in detail and we find appropriate Sobolev type spaces in which there exist unique solutions and obtain the explicit integral kernels of the solution operators as well as some of its properties.

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