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Exponential polynomials on commutative hypergroups
(Springer, www.springer.com, 2013)
Polynomials and exponential polynomials play a fundamental role in the theory of spectral analysis and spectral synthesis on commutative groups. Recently several new results have been published in this field. Spectral ...
The Levi-Civitá equation, vector modules and spectral synthesis
(Banach Center Polish Academy of Sciences, 2013)
The purpose of this paper is to give a survey on some recent results concerning spectral analysis and spectral synthesis in the framework of vector modules and in close connection with the Levi-Civita functional equation. ...