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Application of polyelement equations for functions analytic in a cut plane to interpolation problems for entire functions of class A

https://doi.org/10.26907/2949-3919.2026.2.76-85

Abstract

Linear polyelement equations are investigated for functions analytic in a plane with a symmetric cut along the imaginary axis and vanishing at infinity. The solution is sought in the class of functions representable by a Cauchy-type integral over given cuts with an even or odd density. The regularization of these equations and the question of its equivalence are studied. In this process, the theory of elliptic functions is substantially used. The obtained results are applicable to the study of interpolation problems for entire functions of exponential type from class A.

About the Authors

F. N. Garif’yanov
Kazan State Power Engineering University
Russian Federation

Farhat Nurgayazovich Garif’yanov,

51, Krasnoselskaya str., Kazan 420066.



E. I. Gizzatullina
Kazan State Power Engineering University; UPO «KIU College»
Russian Federation

Elvira Ilhamovna Gizzatullina,

51, Krasnoselskaya str., Kazan 420066.



References

1. B.Ja.Levin, Distribution of zeros of entire functions, AMS, Providence, RI, 1980.

2. F.N.Garif’yanov, E.V.Strezhneva, Interpolation problems for entire functions induced by regular hexagons, Siberian Math. J. 59 (1), 59–64 (2018). https://doi.org/10.1134/S003744661801007X

3. E.P.Aksenteva, F.N.Garifyanov, Sum-difference equation for analytic functions generated by pentagon and its application, Lobachevskii J. Math. 37 (2), 101–104 (2016). https://doi.org/10.1134/S1995080216020037

4. L.Bieberbach, Analytische fortsetzung, Springer-Verlag, Berlin-G¨ottingen-Heidelberg, 1955 (in German).

5. F.N.Garif’yanov, Polyelement functional equations related to the Carleman kernel and their applications, Russian Math. (Iz. VUZ) 66 (11), 18–32 (2022). https://doi.org/10.3103/S1066369X22110020

6. F.N.Garif’yanov, Poly-element equations reducible to moment problem for entire functions of class A, Russian Math. (Iz. VUZ) 61 (4), 1–4 (2017). https://doi.org/10.3103/S1066369X17040016

7. F.D.Gakhov, Boundary value problems, Pergamon Press, Oxford; Addison-Wesley Publishing Co., Inc., Reading, Mass.-London, 1966.

8. A.Hurwitz, Vorlesungen u¨ber allgemeine Funktionentheorie und elliptische Funktionen, R.Courant, Herausgegeben und ergaˆnzt durch einen Abschnitt u¨ber geometrische Funktionentheorie, Springer-Verlag, Berlin, 1964 (in German).

9. F.N.Garif’yanov, E.V.Strezhneva, On a system of entire functions of class A which is biorthogonal to a lacunar power system on the ray, Siberian Math. J. 58 (1), 63–66 (2017). https://doi.org/10.1134/S0037446617010086

10. A.F.Leontiev, Exponential series, Nauka, Moscow, 1976 (in Russian).


Review

For citations:


Garif’yanov F.N., Gizzatullina E.I. Application of polyelement equations for functions analytic in a cut plane to interpolation problems for entire functions of class A. Mathematics and Theoretical Computer Science. 2026;4(2):76-85. (In Russ.) https://doi.org/10.26907/2949-3919.2026.2.76-85

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