Interpolation by Sums of Series of Exponentials and Global Cauchy Problem for Convolution Operators
- 作者: Merzlyakov S.1, Popenov S.1
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隶属关系:
- Institute of Mathematics, Ufa Federal Research Centre, Russian Academy of Sciences
- 期: 卷 99, 编号 2 (2019)
- 页面: 149-151
- 栏目: Mathematics
- URL: https://journals.rcsi.science/1064-5624/article/view/225645
- DOI: https://doi.org/10.1134/S106456241902008X
- ID: 225645
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详细
The study is made of the problem of multiple interpolation on an infinite nodes set by the sums of absolutely convergent series of exponentials whose exponents are from a given set. For entire function conditions on nodes and exponents are obtained that give solubility of the problem. A new approach is demonstrated that enable us, for the case of holomorphic function in a domain, to obtain criteria of solubility of the problem for some class of exponents set and for a special class of nodes set. Moreover the necessity of the conditions is proved in great generality namely for arbitrary nodes sets and in the setting of interpolation by functions that are represented as the Laplace transforms of the Radon measures over the exponents set. Solubility is obtained of the global Cauchy problem for convolution operator with data on the nodes set in domain, in the form of the series of exponentials whose exponents belong to a sparse subset of zero set of characteristic function of the operator. The results substantially strengthen the known results on the theme.
作者简介
S. Merzlyakov
Institute of Mathematics, Ufa Federal Research Centre, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: msg@mail.ru
俄罗斯联邦, Ufa
S. Popenov
Institute of Mathematics, Ufa Federal Research Centre, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: spopenov@gmail.com
俄罗斯联邦, Ufa