Research Article

Extremal Properties of a Certain Subclass of Spiral-Like Functions

Number: 50 March 28, 2025
EN

Extremal Properties of a Certain Subclass of Spiral-Like Functions

Abstract

In this article, we investigate the fundamental extremal and topological properties of a certain subclass of spiral-like functions. We establish that this subclass forms a compact subset within the locally convex linear topological space of analytic functions in the unit disk. Moreover, we derive membership relations and integral representation formulas for functions belonging in this subfamily. Furthermore, the findings extend and generalize previously known results, providing deeper insights into the structural properties of these functions.

Keywords

Univalent functions, spiral-like functions, integral representation formulas

References

  1. L. \v{S}pa\v{c}ek, Contribution \`{a} la th\'{e}orie des fonctions univalentes, \v{C}asopis pro P\v{e}stovani Matematiky Fysiky 62 (1932) 12--19.
  2. R. J. Libera, Univalent $\alpha-$spiral functions, Canadian Journal of Mathematics 19 (1967) 449--456.
  3. Ş. Altınkaya, On the inclusion properties for $\vartheta $-spirallike functions involving both Mittag-Leffler and Wright function, Turkish Journal of Mathematics 46 (3) (2022) 1119--1131.
  4. G. Murugusundaramoorthy, T. Bulboaco, Sufficient conditions of subclasses of spiral-like functions associated with Mittag-Leffler functions, Kragujevac Journal of Mathematics 48 (6) (2024) 921--934.
  5. G. Murugusundaramoorthy, Subordination results of spiral-like functions associated with Srivastava-Attiya operator, Integral Transforms and Special Functions 23 (2) (2012) 97--103.
  6. K. I. Noor, S. Z. H. Bukhari, Some subclasses of analytic and spiral-like functions of complex order involving the Srivastava-Attiya integral operator, Integral Transforms and Special Functions 21 (12) (2010) 907--916.
  7. K. I. Noor, N. Khan, M. A. Noor, On generalized spiral-like analytic functions, Filomat 28 (7) (2014) 1493--1503.
  8. T. M. Seoudy, On unified class of $\gamma$ spirallike functions of complex order, Sarajevo Journal of Mathematics 10 (1) (2014) 55--60.
  9. T. M. Seoudy, Classes of spirallike functions defined by Dziok-Srivastava operator, Le Mathematiche 69 (2) (2014) 93--102.
  10. H. M. Srivastava, S. Owa, A note on certain subclasses of spiral-like functions, Rendiconti del Seminario Matematico della Universita di Padova 80 (1988) 101--108.
APA
Yavuz, T. (2025). Extremal Properties of a Certain Subclass of Spiral-Like Functions. Journal of New Theory, 50, 30-37. https://doi.org/10.53570/jnt.1629998
AMA
1.Yavuz T. Extremal Properties of a Certain Subclass of Spiral-Like Functions. JNT. 2025;(50):30-37. doi:10.53570/jnt.1629998
Chicago
Yavuz, Tuğba. 2025. “Extremal Properties of a Certain Subclass of Spiral-Like Functions”. Journal of New Theory, nos. 50: 30-37. https://doi.org/10.53570/jnt.1629998.
EndNote
Yavuz T (March 1, 2025) Extremal Properties of a Certain Subclass of Spiral-Like Functions. Journal of New Theory 50 30–37.
IEEE
[1]T. Yavuz, “Extremal Properties of a Certain Subclass of Spiral-Like Functions”, JNT, no. 50, pp. 30–37, Mar. 2025, doi: 10.53570/jnt.1629998.
ISNAD
Yavuz, Tuğba. “Extremal Properties of a Certain Subclass of Spiral-Like Functions”. Journal of New Theory. 50 (March 1, 2025): 30-37. https://doi.org/10.53570/jnt.1629998.
JAMA
1.Yavuz T. Extremal Properties of a Certain Subclass of Spiral-Like Functions. JNT. 2025;:30–37.
MLA
Yavuz, Tuğba. “Extremal Properties of a Certain Subclass of Spiral-Like Functions”. Journal of New Theory, no. 50, Mar. 2025, pp. 30-37, doi:10.53570/jnt.1629998.
Vancouver
1.Tuğba Yavuz. Extremal Properties of a Certain Subclass of Spiral-Like Functions. JNT. 2025 Mar. 1;(50):30-7. doi:10.53570/jnt.1629998