Abstract
In this paper, we extend the result of Paris [R.B. Paris, The Stokes phenomenon associated with the Hurwitz zeta function ζ(s, a), Proc. R. Soc. Lond. Ser. A Math. Phys. Eng. Sci., 461(2053):297–304, 2005] on the exponentially improved expansion of the Hurwitz zeta function ζ(s, z), the expansion of which can be reduced to the large-z Poincaré asymptotics of ζ(s, z). Furthermore, we deduce some new series and integral representations of the Hurwitz zeta function ζ(s, z).
Similar content being viewed by others
References
H. Cohen, Number Theory, Vol. II: Analytic and Modern Tools, Springer, New York, 2007.
R.B. Dingle, Asymptotic Expansions: Their Derivation and Interpretation, Academic Press, New York, 1973.
A. Dixit and R. Kumar, On Hurwitz zeta function and Lommel functions, Int. J. Number Theory, 7(2):393–404, 2021.
A. Erdélyi, W. Magnus, F. Oberhettinger, and F.G. Tricomi, Higher Transcendental Functions, Vols. I, II, McGraw-Hill, New York, 1955.
B.X. Fejzullahu, Neumann series and Lommel functions of two variables, Integral Transforms Spec. Funct., 27(6): 443–453, 2016.
B.X. Fejzullahu, Partial fraction expansion of the hypergeometric functions, Integral Transforms Spec. Funct., 30(3): 240–253, 2019.
F. Johansson, Rigorous high-precision computation of the Hurwitz zeta function and its derivatives, Numer. Algorithms, 69(2):253–270, 2015.
S. Kanemitsu, H. Kumagai, H.M. Srivastava, and M. Yoshimoto, Some integral and asymptotic formulas associated with the Hurwitz zeta function, Appl. Math. Comput., 154(3):641–664, 2004.
M. Katsurada, Power series and asymptotic series associated with the Lerch zeta-function, Proc. Japan Acad., Ser. A, 74(10):167–170, 1998.
V. Kowalenko and T. Taucher, A numerical study of a new asymptotic expansion for the incomplete gamma function, Report UM-P-97/06, University of Melbourne, Australia, 1997.
A. Laurinčikas and R. Garunkštis, The Lerch zeta-function, Kluwer Academic, Dordrecht, 2002.
J.B. Lewis, Spaces of holomorphic functions equivalent to the even Maass cusp forms, Invent. Math., 127(2):271–306, 1997.
G. Nemes, Error bounds for the asymptotic expansion of the Hurwitz zeta function, Proc. R. Soc. Lond., A, Math. Phys. Eng. Sci., 473(2203):20170363, 2017.
F.W.J. Olver, D.W. Lozier, R.F. Boisvert, and C.W. Clark (Eds.), Nist Handbook of Mathematical Functions, Cambridge Univ. Press, Cambridge, 2010.
R.B. Paris, The Stokes phenomenon associated with the Hurwitz zeta function ζ(s, a), Proc. R. Soc. Lond., A, Math. Phys. Eng. Sci., 461(2053):297–304, 2005.
R.B. Paris and D. Kaminski, Asymptotics and Mellin–Barnes Integrals, Cambridge Univ. Press, Cambridge, 2001.
A.P. Prudnikov, Yu.A. Brychkov, and O.I. Marichev, Integrals and Series, Vol. 3, Gordon and Breach, New York, 1990.
A.P. Prudnikov, Yu.A. Brychkov, and O.I. Marichev, Integrals and Series, Vol. 2, Gordon and Breach, New York, 1992.
K. Ueno andM. Nishizawa, Quantum groups and zeta-functions, in J. Lukierski, Z. Popowicz, and J. Sobczyk (Eds.), 30th Karpacz Winter School of Theoretical Physics. Quantum Groups: Formalism and Applications, Vol. 2, PWN, Warsaw, 1995, pp. 115–126.
G.N. Watson, A treatise on the Theory of Bessel Functions, Cambridge Univ. Press, Cambridge, 1944.
E.T. Whittaker and G.N. Watson, A Course of Modern Analysis, Cambridge Univ. Press, Cambridge, 1996.
Author information
Authors and Affiliations
Corresponding author
Additional information
Dedicated to the memory of his teacher and father Xhemail Fejzullahu (1945–2021)
Publisher’s note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Fejzullahu, B. On the Poincaré expansion of the Hurwitz zeta function. Lith Math J 61, 460–470 (2021). https://doi.org/10.1007/s10986-021-09527-8
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10986-021-09527-8