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On the Fekete and Szegö problem for starlike mappings of order α

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Abstract

Let S * α be the familiar class of normalized starlike functions of order α in the unit disk. In this paper, we establish the Fekete and Szegö inequality for the class S * α , and then we generalize this result to the unit ball in a complex Banach space or on the unit polydisk in Cn.

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References

  1. Bieberbach, L.: Über die Koeffizienten der einigen Potenzreihen welche eine schlichte Abbildung des Einheitskreises vermitten, S. B. Preuss. Akad. Wiss, 1916

    MATH  Google Scholar 

  2. Bhowmik, B., Ponnusamy, S., Wirths, K. J.: On the Fekete–Szegö problem for concave univalent functions. J. Math. Anal. Appl., 373, 432–438 (2011)

    Article  MathSciNet  MATH  Google Scholar 

  3. Cartan, H.: Sur la possibilité d’étendre aux fonctions de plusieurs variables complexes la théorie des fonctions univalentes, in: P. Montel (Ed.), Lecons sur les Fonctions Univalentes ou Multivalentes, Gauthier-Villars, Paris, 1933

    Google Scholar 

  4. de-Branges, L.: A proof of the Bieberbach conjecture. Acta Math., 154(1–2), 137–152 (1985)

    Article  MathSciNet  MATH  Google Scholar 

  5. Fekete, M., Szegö, G.: Eine Bemerkunguber ungerade schlichte Funktionen. J. Lond. Math. Soc., 8, 85–89 (1933)

    Article  MATH  Google Scholar 

  6. Gong, S.: The Bieberbach Conjecture, Amer. Math. Soc., International Press, Providence, RI, 1999

    Google Scholar 

  7. Graham, I., Hamada, H., Kohr, G.: Parametric representation of univalent mappings in several complex variables. Canadian J. Math., 54, 324–351 (2002)

    Article  MathSciNet  MATH  Google Scholar 

  8. Graham, I., Kohr, G., Kohr, M.: Loewner chains and parametric representation in several complex variables. J. Math. Anal. Appl., 281, 425–438 (2003)

    Article  MathSciNet  MATH  Google Scholar 

  9. Graham, I., Kohr, G.: Geometric Function Theory in One and Higher Dimensions, Marcel Dekker, New York, 2003

    MATH  Google Scholar 

  10. Graham, I., Hamada, H., Honda, T., et al.: Growth, distortion and coefficient bounds for Carathéodory families in Cn and complex Banach spaces. J. Math. Anal. Appl., 416, 449–469 (2014)

    Article  MathSciNet  MATH  Google Scholar 

  11. Hamada, H., Kohr, G., Liczberski, P.: Starlike mappings of order a on the unit ball in complex Banach spaces. Glas. Mat. Ser., 36(3), 39–48 (2001)

    MathSciNet  MATH  Google Scholar 

  12. Hamada, H., Honda, T., Kohr, G.: Growth theorems and coefficient bounds for univalent holomorphic mappings which have parametric representationt. J. Math. Anal. Appl., 317, 302–319 (2006)

    Article  MathSciNet  MATH  Google Scholar 

  13. Hamada, H., Honda, T.: Sharp growth theorems and coefficient bounds for starlike mappings in several complex variables. Chin. Ann. Math., 29B(4), 353–368 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  14. Kohr, G.: Certain partial differential inequalities and applications for holomorphic mappings defined on the unit ball of Cn. Ann. Univ. Mariae Curie Skl., Sect. A, 50, 87–94 (1996)

    MATH  Google Scholar 

  15. Kohr, G.: On some best bounds for coefficients of several subclasses of biholomorphic mappings in Cn. Complex Variables, 36, 261–284 (1998)

    Article  MathSciNet  MATH  Google Scholar 

  16. Kanas, S.: An unified approach to the Fekete–Szegö problem. Appl. Math. Comput., 218, 8453–8461 (2012)

    MathSciNet  MATH  Google Scholar 

  17. Keogh, F. R., Merkes, E. P.: A coefficient inequality for certain classes of analytic functions. Proc. Amer. Math. Soc., 20, 8–12 (1969)

    Article  MathSciNet  MATH  Google Scholar 

  18. London, R. R.: Fekete–Szegö inequalities for close-to-convex functions. Proc. Amer. Math. Soc., 117(4), 947–950 (1993)

    MathSciNet  MATH  Google Scholar 

  19. Liu, X. S., Liu, T. S.: The sharp estimates of all homogeneous expansions for a class of quasi-convex mappings on the unit polydisk in Cn. Chin. Ann. Math., 32B, 241–252 (2011)

    Article  MATH  Google Scholar 

  20. Pfluger, A.: The Fekete–Szegö inequality for complex parameter. Complex Var. Theory Appl., 7, 149–160 (1986)

    Article  MATH  Google Scholar 

  21. Xu, Q. H., Liu, T. S.: On coefficient estimates for a class of holomorphic mappings. Sci. China Ser. A-Math., 52, 677–686 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  22. Xu, Q. H., Liu, T. S., Liu, X. S.: The sharp estimates of homogeneous expansions for the generalized class ofclose-to-quasi-convex mappings. J. Math. Anal. Appl., 389, 781–791 (2012)

    Article  MathSciNet  MATH  Google Scholar 

  23. Xu, Q. H., Liu, T. S.: On the Fekete and Szegö problem for the class of starlike mappings in several complex variables. Abstr. Appl. Anal., ID 807026, 6 pp (2014)

    Google Scholar 

  24. Xu, Q. H., Ting, Y., Liu, T. S., et al.: Fekete and Szegö problem for a subclass of quasi-convex mappings in several complex variables. Front. Math. China, 10, 1461–1472 (2015)

    Article  MathSciNet  MATH  Google Scholar 

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Acknowledgements

We thank the referees for their time and comments.

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Correspondence to Qing Hua Xu.

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Supported by NNSF of China (Grant Nos. 11561030, 11471111 and 11261022), the Jiangxi Provincial Natural Science Foundation of China (Grant Nos. 20152ACB20002 and 20161BAB201019) and Natural Science Foundation of Department of Education of Jiangxi Province, China (Grant No. GJJ150301)

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Xu, Q.H., Fang, F. & Liu, T.S. On the Fekete and Szegö problem for starlike mappings of order α . Acta. Math. Sin.-English Ser. 33, 554–564 (2017). https://doi.org/10.1007/s10114-016-5762-2

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  • DOI: https://doi.org/10.1007/s10114-016-5762-2

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