On a Subclass of Certain Convex Harmonic Univalent Functions Related to Q-Derivative

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Hamid Shamsan
Hamid Shamsan
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S. Latha
S. Latha
α University of Mysore University of Mysore

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On a Subclass of Certain Convex Harmonic Univalent Functions Related to Q-Derivative

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Abstract

We define and investigate a new class of harmonic functions defined by q -derivative. We give univalence criteria and sufficient coefficient conditions for normalized q -harmonic functions that are convex of order 1. We obtain coefficient inequalities, extreme points distortion bounds, convolution and convex combination condition, and covering theorems for these functions. Further, we obtain the closure property of this class under integral operator.

References

9 Cites in Article
  1. Y Avci,E Zlotkiewicz (1990). On harmonic univalent mappings.
  2. G Choquet (1945). Sur un type de transformation analytique gnralisant la reprsentation conforme et dfinie au moyen de fonctions harmoniques.
  3. J Clunie,T Sheil-Small (1984). Harmonic univalent functions.
  4. Michael Dorff (2003). Minimal graphs in ℝ³ over convex domains.
  5. P Duren (2004). Harmonic Mappings in the Plane.
  6. F Jackson (1910). On q-definite integrals.
  7. On A Subclass Of Certain Unknown Title.
  8. F Jackson (1909). XI.—On <i>q</i>-Functions and a certain Difference Operator.
  9. J Jahangiri (1998). Coefficient bounds and univalence criteria for harmonic functions with negative coefficients.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Hamid Shamsan. 2018. \u201cOn a Subclass of Certain Convex Harmonic Univalent Functions Related to Q-Derivative\u201d. Global Journal of Science Frontier Research - F: Mathematics & Decision GJSFR-F Volume 18 (GJSFR Volume 18 Issue F6): .

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Issue Cover
GJSFR Volume 18 Issue F6
Pg. 57- 68
Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords
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GJSFR-F Classification: MSC 2010: 35E10
Version of record

v1.2

Issue date

August 10, 2018

Language
en
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We define and investigate a new class of harmonic functions defined by q -derivative. We give univalence criteria and sufficient coefficient conditions for normalized q -harmonic functions that are convex of order 1. We obtain coefficient inequalities, extreme points distortion bounds, convolution and convex combination condition, and covering theorems for these functions. Further, we obtain the closure property of this class under integral operator.

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On a Subclass of Certain Convex Harmonic Univalent Functions Related to Q-Derivative

Hamid Shamsan
Hamid Shamsan University of Mysore
S. Latha
S. Latha

Research Journals