Applications of Hurwitz-Lerch Zeta Function to a Certain Class of Bi-Bazilevic and Pseudo-Starlike Functions

Main Article Content

Waleed Al-Rawashdeh

Abstract

In this paper, we introduce a novel class of bi-univalent functions defined using the convolution of the normalized q-analogue of the Hurwitz–Lerch zeta function with the q-Srivastava–Attiya operator on the open unit disk D. Furthermore, this class is connected with bi-Bazilevic functions, pseudo-starlike functions, and the q-analogue of the hyperbolic tangent function. The primary objective is to estimate the initial coefficients in the Taylor expansion of functions belonging to this new class and some of its subclasses. In addition, we investigate the classical Fekete–Szegö functional problem for functions in this novel class. Finally, we present several corollaries that come from particular choices of the parameters defining this class.

Article Details

References

  1. A.G. Al-Amoush, Coefficient Estimates for a New Subclasses of $lambda$-Pseudo Bi-Univalent Functions With Respect to Symmetrical Points Associated With the Horadam Polynomials, Turk. J. Math. 43 (2019), 2865–2875.
  2. W. Al-Rawashdeh, Applications of Gegenbauer Polynomials to a Certain Subclass of p-Valent Functions, WSEAS Trans. Math. 22 (2023), 1025–1030. https://doi.org/10.37394/23206.2023.22.111.
  3. W. Al-Rawashdeh, A New Class of Generalized Starlike Bi-Univalent Functions Subordinated to Legendre Polynomials, Int. J. Anal. Appl. 22 (2024), 218. https://doi.org/10.28924/2291-8639-22-2024-218.
  4. W. Al-Rawashdeh, Coefficient Bounds of a class of Bi-Univalent Functions Related to Gegenbauer Polynomials, Int. J. Math. Comput. Sci. 19 (2024), 635–642.
  5. W. Al-Rawashdeh, On the Study of Bi-Univalent Functions Defined by the Generalized Su{a}lu{a}gean Differential Operator, Eur. J. Pure Appl. Math. 17 (2024), 3899–3914. https://doi.org/10.29020/nybg.ejpam.v17i4.5548.
  6. W. Al-Rawashdeh, Connection between Legendre Polynomials and classes of Bi-Bazilevic Functions Defined by Borel Distribution and Ruscheweyh Operator, Int. J. Neutrosophic Sci. 26 (2025), 242.
  7. W. Al-Rawashdeh, An Application of Legendre Polynomials to Bi-Bazilevic Functions Associated with Q-Ruscheweyh Operator, Eur. J. Pure Appl. Math. 18 (2025), 5731. https://doi.org/10.29020/nybg.ejpam.v18i1.5731.
  8. W. AlRawashdeh, A Family of Analytic Functions Subordinate to Horadam Polynomials, Eur. J. Pure Appl. Math. 17 (2024), 158–170. https://doi.org/10.29020/nybg.ejpam.v17i1.5022.
  9. A. Aral, V. Gupta, R.P. Agarwal, Applications of $q$-Calculus in Operator Theory, Springer New York, 2013. https://doi.org/10.1007/978-1-4614-6946-9.
  10. R.S. Badar, Applications of $q$-Srivastava-Attiya Operator on Subclasses of Analytic Functions, Commun. Fac. Sci. Univ. Ank. Ser. A1 Math. Stat. 74 (2025), 254–266. https://doi.org/10.31801/cfsuasmas.1515007.
  11. D.A. Brannan, J.G. Clunie, Aspects of Contemporary Complex Analysis, in: Proceedings of the NATO Advanced Study Institute (University of Durham, Durham; July 1–20, 1979), Academic Press, 1980.
  12. M. Çağlar, H. Orhan, M. Kamali, Fekete-Szegö Problem for a Subclass of Analytic Functions Associated with Chebyshev Polynomials, Bol. Soc. Parana. Mat. 40 (2022), 1–6. https://doi.org/10.5269/bspm.51024.
  13. J.H. Choi, Y.C. Kim, T. Sugawa, A General Approach to the Fekete-Szeg"{o} Problem, J. Math. Soc. Japan 59 (2007), 707–727.
  14. E. Deniz, M. Kamali, S. Korkmaz, A Certain Subclass of Bi-Univalent Functions Associated with Bell Numbers and $q$-Srivastava Attiya Operator, AIMS Math. 5 (2020), 7259–7271. https://doi.org/10.3934/math.2020464.
  15. P. Duren, Univalent Functions, Grundlehren der Mathematischen Wissenschaften 259, Springer-Verlag, New York, 1983.
  16. P. Duren, Subordination in Complex Analysis, Lecture Notes in Mathematics, Springer, (1977).
  17. M. Fekete, G. Szegö, Eine Bemerkung Über Ungerade Schlichte Funktionen, J. Lond. Math. Soc. s1-8 (1933), 85–89. https://doi.org/10.1112/jlms/s1-8.2.85.
  18. A.W. Goodman, Univalent Functions, Mariner Publishing Co. Inc., 1983.
  19. V. Kac, P. Cheung, Quantum Calculus, Universitext, Springer, New York, 2002.
  20. M. Kamali, M. Cau{g}lar, E. Deniz, M. Turabaev, Fekete Szeg"{o} Problem for a New Subclass of Analytic Functions Satisfying Subordinate Condition Associated With Chebyshev Polynomials, Turk. J. Math. 45 (2021), 1195–1208.
  21. S. Kanas and D. Răducanu, Some class of analytic functions related to conic domain, Math. Slovaca 64 (2014), 1183–1196.
  22. F.R. Keogh, E.P. Merkes, A Coefficient Inequality for Certain Classes of Analytic Functions, Proc. Am. Math. Soc. 20 (1969), 8–12. https://doi.org/10.2307/2035949.
  23. M. Lerch, Note sur la Fonction $mathfrak{K}(w, x, s) = sumlimits_{k = 0}^infty {frac{{e^{2kpi ix} }}{{left( {w + k} right)^3 }}}$, Acta Math. 11 (1887), 19–24. https://doi.org/10.1007/BF02612318.
  24. M. Lewin, On a Coefficient Problem for Bi-Univalent Functions, Proc. Am. Math. Soc. 18 (1967), 63–68. https://doi.org/10.1090/s0002-9939-1967-0206255-1.
  25. N. Magesh, S. Bulut, Chebyshev Polynomial Coefficient Estimates for a Class of Analytic Bi-Univalent Functions Related to Pseudo-Starlike Functions, Afr. Mat. 29 (2017), 203–209. https://doi.org/10.1007/s13370-017-0535-3.
  26. S. Miller, P. Mocabu, Differential Subordination: Theory and Applications, CRC Press, 2000.
  27. Z. Nehari, Conformal Mappings, McGraw-Hill, New York, 1952.
  28. E. Netanyahu, The Minimal Distance of the Image Boundary from the Origin and the Second Coefficient of a Univalent Function in $|z|<1$, Arch. Ration. Mech. Anal. 32 (1969), 100–112. https://doi.org/10.1007/BF00247676.
  29. S.D. Purohit, R.K. Raina, Fractional $q$-Calculus and Certain Subclasses of Univalent Analytic Functions, Mathematica 55 (2013), 62–74.
  30. S. Boroujeni, S. Hadi, S. Najafzadeh, Applications of Q-hypergeometric and Hurwitz-Lerch Zeta Functions on Meromorphic Functions, Math. Interdiscip. Res. 8 (2023), 309–322.
  31. S.A. Shah, K.I. Noor, Study on the q-Analogue of a Certain Family of Linear Operators, Turk. J. Math. 43 (2019), 2707–2714. https://doi.org/10.3906/mat-1907-41.
  32. Y.J. Sim, O.S. Kwon, N.E. Cho, H.M. Srivastava, Bounds for the Real Parts and Arguments of Normalized Analytic Functions Defined by the Srivastava-Attiya Operator, J. Comput. Anal. Appl. 28 (2020), 628–645.
  33. Y. Simsek, On Twisted Q-Hurwitz Zeta Function and Q-Two-Variable L-Function, Appl. Math. Comput. 187 (2007), 466–473. https://doi.org/10.1016/j.amc.2006.08.146.
  34. H.M. Srivastava, H.L. Manocha, A Treatise on Generating Functions, Halsted Press, 1984.
  35. H.M. Srivastava, A New Family of the $lambda$-Generalized Hurwitz-Lerch Zeta Functions with Applications, Appl. Math. Inf. Sci. 8 (2014), 1485–1500. https://doi.org/10.12785/amis/080402.
  36. H.M. Srivastava, A.A. Attiya, An Integral Operator Associated with the Hurwitz–Lerch Zeta Function and Differential Subordination, Integral Transform. Spec. Funct. 18 (2007), 207–216. https://doi.org/10.1080/10652460701208577.
  37. H. M. Srivastava, Some General Families of the Hurwitz-Lerch Zeta Functions and Their Applications: Recent Developments and Directions for Further Researches, Proc. Inst. Math. Mech. Acad. Sci. Azerbaijan 45 (2019), 234–269. https://doi.org/10.29228/proc.7.
  38. H.M. Srivastava, J. Choi, Zeta and q-Zeta Functions and Associated Series and Integrals, Elsevier, 2012. https://doi.org/10.1016/c2010-0-67023-4.
  39. H.M. Srivastava, A. Juma, H. Zayed, Univalence Conditions for an Integral Operator Defined by a Generalization of the Srivastava-Attiya Operator, Filomat 32 (2018), 2101–2114. https://doi.org/10.2298/fil1806101s.
  40. H.M. Srivastava, A. Prajapati, P. Gochhayat, Third-Order Differential Subordination and Differential Superordination Results for Analytic Functions Involving the Srivastava-Attiya Operator, Appl. Math. Inf. Sci. 12 (2018), 469–481. https://doi.org/10.18576/amis/120301.
  41. H.M. Srivastava, The Zeta and Related Functions: Recent Developments, J. Adv. Eng. Comput. 3 (2019), 329–354. https://doi.org/10.25073/jaec.201931.229.
  42. H. M. Srivastava, Some General Families of the Hurwitz-Lerch Zeta Functions and Their Applications: Recent Developments and Directions for Further Researches, Proc. Inst. Math. Mech. Acad. Sci. Azerbaijan 45 (2019), 234–269. https://doi.org/10.29228/proc.7.
  43. H.M. Srivastava, Ş. Altınkaya, S. Yalçın, Certain Subclasses of Bi-Univalent Functions Associated with the Horadam Polynomials, Iran. J. Sci. Technol. Trans.: Sci. 43 (2018), 1873–1879. https://doi.org/10.1007/s40995-018-0647-0.
  44. H.M. Srivastava, M. Kamalı, A. Urdaletova, A Study of the Fekete-Szegö Functional and Coefficient Estimates for Subclasses of Analytic Functions Satisfying a Certain Subordination Condition and Associated with the Gegenbauer Polynomials, AIMS Math. 7 (2022), 2568–2584. https://doi.org/10.3934/math.2022144.
  45. H.M. Srivastava, M. Tahir, B. Khan, M. Darus, N. Khan, et al., Certain Subclasses of Meromorphically-Starlike Functions Associated with the -Derivative Operators, Ukr. Mat. Zhurnal 73 (2021), 1260–1273. https://doi.org/10.37863/umzh.v73i9.814.
  46. H.M. Srivastava, A.K. Wanas, R. Srivastava, Applications of the Q-Srivastava-Attiya Operator Involving a Certain Family of Bi-Univalent Functions Associated with the Horadam Polynomials, Symmetry 13 (2021), 1230. https://doi.org/10.3390/sym13071230.
  47. M. Wakayama, Y. Yamasaki, Integral Representations of Q-Analogues of the Hurwitz Zeta Function, Monatshefte Math. 149 (2006), 141–154. https://doi.org/10.1007/s00605-005-0369-1.