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On two methods for quantitative unique continuation results for some nonlocal operators
Communications in Partial Differential Equations ( IF 2.1 ) Pub Date : 2020-06-28 , DOI: 10.1080/03605302.2020.1776323
María Ángeles García-Ferrero 1 , Angkana Rüland 1
Affiliation  

Abstract In this article, we present two mechanisms for deducing logarithmic quantitative unique continuation bounds for certain classes of integral operators. In our first method, expanding the corresponding integral kernels, we exploit the logarithmic stability of the moment problem. In our second method we rely on the presence of branch-cut singularities for certain Fourier multipliers. As an application we present quantitative Runge approximation results for the operator with and acting on functions on

中文翻译:

一些非局部算子定量唯一连续结果的两种方法

摘要 在本文中,我们提出了两种用于推导某些类型的积分算子的对数定量唯一连续界的机制。在我们的第一种方法中,扩展相应的积分核,我们利用矩问题的对数稳定性。在我们的第二种方法中,我们依赖于某些傅立叶乘法器的分支切割奇点的存在。作为一个应用程序,我们为具有和作用于上的函数的算子提供定量的龙格近似结果
更新日期:2020-06-28
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