arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.07216math.FAcs.NAmath.NA
收藏

轴对称域上索伯列夫空间的傅里叶系数刻画

Characterization of Sobolev spaces by their Fourier coefficients in axisymmetric domains

Martin Costabel, Monique Dauge, Jun-Qi Hu

摘要:

使用傅里叶级数表示的功能轴对称域,我们发现加权Sobolev规范的傅里叶系数的功能,产生规范等价于标准的Sobolev规范的功能。这个特征是普遍的意义上的等价常数是独立的域。特别地,域是否包含其旋转轴的一部分或与轴不相交(但可能任意地接近于轴)是一致的。我们的特征使用步骤加权范数涉及到轴的距离是从一个不同的书中得到的早期[Bernardi,Dauge,Maday“谱方法轴对称域”,Gauthier-Villars,1999],其中涉及跟踪条件和域相关。我们还提供了一个非圆柱域的补充,在上述证明。前引书.

英文摘要:

Using Fourier series representations of functions on axisymmetric domains, we find weighted Sobolev norms of the Fourier coefficients of a function that yield norms equivalent to the standard Sobolev norms of the function. This characterization is universal in the sense that the equivalence constants are independent of the domain. In particular it is uniform whether the domain contains a part of its axis of rotation or is disjoint from, but maybe arbitrarily close to, the axis. Our characterization using step-weighted norms involving the distance to the axis is different from the one obtained earlier in the book [Bernardi, Dauge, Maday "Spectral methods for axisymmetric domains", Gauthier-Villars, 1999], which involves trace conditions and is domain dependent. We also provide a complement for non cylindrical domains of the proof given in loc. cit. .

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑