Journal of Siberian Federal University. Mathematics & Physics / A List of Integral Representations for the Diagonal of Power Series of a Rational Function

Full text (.pdf)
Issue
Journal of Siberian Federal University. Mathematics & Physics. 2021 14 (5)
Authors
Senashov, Artem V.
Contact information
Senashov, Artem V.: Siberian Federal University Krasnoyarsk, Russian Federation;
Keywords
multidimensional power series; complex integral; integral representation; amoeba; Taylor series; diagonal of a power series
Abstract

In this paper we present integral representations for the diagonals of power series. Such representations are obtained by lowering the multiplicity of integration for the previously known integral representation. The procedure for reducing the order of integration is carried out in the framework of the Leray theory of multidimensional residues. The concept of the amoeba of a complex analytic hypersurface plays a special role in the construction of new integral representations

Pages
624–631
DOI
10.17516/1997-1397-2021-14-5-624-631
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/143737