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Subordination properties and coefficient problems for a novel class of convex functions

  • Ebrahim Analouei Adegani EMAIL logo , Mostafa Jafari , Teodor Bulboacă , Nak Eun Cho and Ahmad Motamednezhad
Published/Copyright: May 13, 2024
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Abstract

In this study, a novel family of analytical functions connected to convex functions in the open unit is introduced and investigated. Additionally, relationships between this class and other subclasses of analytic functions are deduced. Further, different results for the mentioned class and several new interesting properties are obtained.

MSC 2010: 30C45; 30C80
  1. (Communicated by Stanisława Kanas)

References

[1] Adegani, E. A.—Bulboacă, T.—Hameed Mohammed, N.—Zaprawa, P.: Solution of logarithmic coefficients conjectures for some classes of convex functions, Math. Slovaca 73 (2023), 79–88.Search in Google Scholar

[2] Adegani, E. A.—Bulboacă, T.—Motamednezhad, A.: Sufficient condition for p-valent strongly starlike functions, J. Contemp. Mathemat. Anal. 55 (2020), 213–223.Search in Google Scholar

[3] Cho, N. E.—Ebadian, A.—Bulut, S.—Adegani, E. A.: Subordination implications and coefficient estimates for subclasses of starlike functions, Mathematics 8 (2020), Art. No. 1150.Search in Google Scholar

[4] Darus, M.—Hussain, S.—Raza, M.—SokóŁ, J.: On a subclass of starlike functions, Results Math. 73 (2018), Art. No. 22.Search in Google Scholar

[5] Hameed Mohammed, N.—Adegani, E. A.—Bulboacă, T.—Cho, N. E.: A family of holomorphic functions defined by differential inequality, Math. Inequal. Appl. 25 (2022), 27–39.Search in Google Scholar

[6] Kanas, S.—Wiśniowska, A.: Conic regions and k-uniform convexity, J. Comput. Appl. Math. 105 (1999), 327–336.Search in Google Scholar

[7] Keogh, F. R.—Merkes, E. P.: A coefficient inequality for certain classes of analytic functions, Proc. Amer. Math. Soc. 20 (1969), 8–12.Search in Google Scholar

[8] Khan, B.—Aldawish, I.—Araci, S.—Khan, M. G.: Third Hankel determinant for the logarithmic coefficients of starlike functions associated with sine function, Fractal Fract. 6 (2022), Art. No. 261.Search in Google Scholar

[9] Ma, W.—Minda, D.: Uniformly convex functions, Ann. Polon. Math. 2 (1992), 165–-175.Search in Google Scholar

[10] Marx, A.: Untersuchungen über schlichte Abbildungen, Math. Ann. 107 (1932–33), 40–67.Search in Google Scholar

[11] Milin, I. M.: On a property of the logarithmic coefficients of univalent functions, In: Metric Questions in the Theory of Functions, Naukova Dumka, Kiev, 1980, pp. 86–90 (in Russian).Search in Google Scholar

[12] Miller, S. S.—Mocanu, P. T.: Univalent solutions of Briot-Bouquet differential equations, J. Differential Equations 56 (1985), 297–309.Search in Google Scholar

[13] Miller, S. S.—Mocanu, P. T.: Differential Subordinations Theory and Applications, Marcel Dekker Inc., New York, 2000.Search in Google Scholar

[14] Mocanu, P. T.—Ripeanu, D.—Şerb, I.: The order of starlikeness of certain integral operators, Mathematica(Cluj) 23 (1981), 225–230.Search in Google Scholar

[15] Nehari, Z.: Conformal Mapping, McGraw-Hill; New York, NY, USA, 1952.Search in Google Scholar

[16] Pommerenke, Ch.: On the coefficients and Hankel determinants of univalent functions, J. Lond. Math. Soc. 44 (1966), 111–122.Search in Google Scholar

[17] Prokhorov, D. V.—Szynal, J.: Inverse coefficients for (α;β)-convex functions, Ann. Univ. Mariae Curie-Skłodowska Sect. A 35 (1981), 125–143.Search in Google Scholar

[18] Răducanu, D.: Second Hankel determinant for a class of analytic functions defined by q-derivative operator, An. Ştiinţ. Univ. “Ovidius” Constanţa Ser. Mat. 27 (2019), 167–177.Search in Google Scholar

[19] Rønning, F.: Uniformly convex functions and a corresponding class of starlike functions, Proc. Amer. Math. Soc. 118 (1993), 189–196.Search in Google Scholar

[20] Swaminathan, A.—Wani, L. A.: Subordination-implication problems concerning the nephroid starlikeness of analytic functions, Math. Slovaca 72 (2022), 1185–1202.Search in Google Scholar

[21] Sim, Y. J.—Lecko, A.—Thomas, D. K.: The second Hankel determinant for strongly convex and Ozaki close-to-convex functions, Ann. Mat. Pura Appl. 200 (2021), 2515–2533.Search in Google Scholar

[22] SokóŁ, J.—Nunokawa, M.: On some class of convex functions, C. R. Math. Acad. Sci. Paris 353 (2015), 427–431.Search in Google Scholar

[23] Strohhäcker, E.: Beiträge zur Theorie der schlichten Functionen, Math. Z. 37 (1933), 356–380.Search in Google Scholar

[24] Ullah, N.—Ali, I.—Hussain, S. M.—Ro, J.-S.—Khan, N.—Khan, B.: Third Hankel determinant for a subclass of univalent functions associated with lemniscate of bernoulli, Fractal Fract. 6 (2022), Art. No. 48.Search in Google Scholar

[25] Zaprawa, P.: Initial logarithmic coefficients for functions starlike with respect to symmetric points, Bol. Soc. Mat. Mex. 27 (2021), Art. No. 62.Search in Google Scholar

Received: 2023-01-26
Accepted: 2023-04-12
Published Online: 2024-05-13
Published in Print: 2024-02-26

© 2024 Mathematical Institute Slovak Academy of Sciences

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