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On geometric properties of a class of generalized Bazilevič harmonic functions

  • Published: 17 April 2026
  • MSC : 30C45, 30C50, 30C80

  • In this paper, we introduce and study a class of generalized harmonic functions related to the Bazilevič function. We establish necessary and sufficient coefficient conditions, growth estimates, and convex combination properties for this class. Several new results are obtained, extending known properties from analytic to harmonic mappings.

    Citation: Shuhai Li, Lina Ma. On geometric properties of a class of generalized Bazilevič harmonic functions[J]. AIMS Mathematics, 2026, 11(4): 10518-10532. doi: 10.3934/math.2026433

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  • In this paper, we introduce and study a class of generalized harmonic functions related to the Bazilevič function. We establish necessary and sufficient coefficient conditions, growth estimates, and convex combination properties for this class. Several new results are obtained, extending known properties from analytic to harmonic mappings.



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    [1] I. E. Bazilevič, On a case of integrability in quadratures of the Loewner–Kufarev equation, Mat. Sb. (N.S.), 37 (1955), 471–476.
    [2] R. Singh, On Bazilevič functions, Proc. Amer. Math. Soc., 38 (1973), 261–271. https://doi.org/10.2307/2039275 doi: 10.2307/2039275
    [3] Q. Deng, The estimate of the difference of moduli of adjacent coefficients of Bazilevič functions, Acta Mathematica Sinica (Chinese Series), 49 (2006), 1195–1200. https://doi.org/10.12386/A2006sxxb0148 doi: 10.12386/A2006sxxb0148
    [4] D. K. Thomas, N. Tuneski, A. Vasudevarao, Univalent functions: A primer, Boston: De Gruyter, 2018. https://doi.org/10.1515/9783110560961
    [5] X. M. Niu, S. H. Li, Milin coefficient estimation and adjacent coefficient problem for Bazilevič functions of type $\alpha$ and order $\beta$, Acta Mathematica Scientia, Series A, 39 (2019), 220–234.
    [6] Marjono, J. Sokól, D. K. Thomas, The fifth and sixth coefficients for Bazilevič functions $\mathcal{B}_1(\alpha)$, Mediterr. J. Math., 14 (2017), 158. https://doi.org/10.1007/s00009-017-0958-y doi: 10.1007/s00009-017-0958-y
    [7] P. N. Chichra, New subclass of the class of close-to-convex functions, Proc. Amer. Math. Soc., 62 (1977), 37–43. https://doi.org/10.1090/S0002-9939-1977-0425097-1 doi: 10.1090/S0002-9939-1977-0425097-1
    [8] H. Airault, A. Bouali, Differential calculus on the Faber polynomials, B. Sci. Math., 130 (2006), 179–222. https://doi.org/10.1016/j.bulsci.2005.10.002 doi: 10.1016/j.bulsci.2005.10.002
    [9] J. Chunie, T. Sheil-Small, Harmonic univalent functions, Ann. Fenn. Math., 39 (1984), 3–25. https://doi.org/10.5186/aasfm.1984.0905 doi: 10.5186/aasfm.1984.0905
    [10] P. Duren, Harmonic mappings in the plane, Cambridge: Cambridge University Press, 2004. https://doi.org/10.1017/CBO9780511546600
    [11] M. S. Liu, L. M. Yan, Geometric properties and sections for certain subclasses of harmonic mappings, Monatsh. Math., 190 (2019), 353–387. https://doi.org/10.1007/s00605-018-1240-5 doi: 10.1007/s00605-018-1240-5
    [12] L. L. Li, S. Ponnusamy, Injective section of univalent harmonic mappings, Nonlinear Anal.-Theor., 89 (2013), 276–283. https://doi.org/10.1016/j.na.2013.05.016 doi: 10.1016/j.na.2013.05.016
    [13] L. L. Li, S. Ponnusamy, Injectivity of sections of convex harmonic mappings and convolution theorem, Czech. Math. J., 66 (2016), 331–350. https://doi.org/10.1007/s10587-016-0259-9 doi: 10.1007/s10587-016-0259-9
    [14] S. S. Ding, Y. Ling, G. J. Bao, Some properties of a class of analytic functions, J. Math. Anal. Appl., 195 (1995), 71–81. https://doi.org/10.1006/jmaa.1995.1342 doi: 10.1006/jmaa.1995.1342
    [15] S. S. Miller, P. T. Mocanu, Differential subordination and univalent functions, Michigan Math. J., 28 (1981), 157–172. https://doi.org/10.1307/mmj/1029002507 doi: 10.1307/mmj/1029002507
    [16] D. Kalaj, S. Ponnusamy, M. Vuorinen, Radius of close-to-convexity and full starlikeness of harmonic mappings, Complex Var. Elliptic, 59 (2014), 539–552. https://doi.org/10.1080/17476933.2012.759565 doi: 10.1080/17476933.2012.759565
    [17] J. M. Jahangiri, Harmonic functions starlike in the unit disk, J. Math. Anal. Appl., 235 (1999), 470–477. https://doi.org/10.1006/jmaa.1999.6377 doi: 10.1006/jmaa.1999.6377
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