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JOURNALS // Journal of the Belarusian State University. Mathematics and Informatics // Archive

Journal of the Belarusian State University. Mathematics and Informatics, 2019 Volume 2, Pages 6–17 (Mi bgumi91)

This article is cited in 4 papers

Real, Complex and Functional analysis

Rational mnemofunctions on $\mathbb{R}$

T. G. Shahava

Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

Abstract: The subspace of rational distributions was considered it this paper. Distribution is called rational if it has analytical representation $f=(f^{+},f^{-})$ where functions $f^{\pm}$ are proper rational functions. The embedding of the rational distributions subspace into the rational mnemofunctions algebra on $\mathbb{R}$ was built by the mean of mapping $R_{a}(f)=f_{\varepsilon}(x)=f^{+}(x+i\varepsilon) - f^{-}(x-i\varepsilon)$. A complete description of this algebra was given. Its generators were singled out; the multiplication rule of distributions in this algebra was formulated explicitly. Known cases when product of distributions is a distribution were analyzed by the terms of rational mnemofunctions theory. The conditions under which the product of arbitrary rational distributions is associated with a distribution were formulated.

Keywords: mnemofunction; analytical representation of distribution; algebra of rational mnemofunctions.

UDC: 517.9

Received: 22.01.2019

DOI: 10.33581/2520-6508-2019-2-6-17



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