Generalization of certain subclasses of analytic functions

We introduce the subclass Tj(n,m,α) of analytic functions with negative coefficients by the operator Dn. Coefficient inequalities and distortion theorems of functions in Tj(n,m,α) are determind. Further, distortion theorems for fractional calculus of functions in Tj(n,m,α) are obtained.

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Main Author: Tadayuki Sekine
Format: Article
Language:English
Published: Wiley 1987-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Subjects:
Online Access:http://dx.doi.org/10.1155/S0161171287000826
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author Tadayuki Sekine
author_facet Tadayuki Sekine
author_sort Tadayuki Sekine
collection DOAJ
description We introduce the subclass Tj(n,m,α) of analytic functions with negative coefficients by the operator Dn. Coefficient inequalities and distortion theorems of functions in Tj(n,m,α) are determind. Further, distortion theorems for fractional calculus of functions in Tj(n,m,α) are obtained.
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institution Kabale University
issn 0161-1712
1687-0425
language English
publishDate 1987-01-01
publisher Wiley
record_format Article
series International Journal of Mathematics and Mathematical Sciences
spelling doaj-art-9dd291dc2ec240fb98529da024c675ce2025-02-03T01:10:01ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04251987-01-0110472573210.1155/S0161171287000826Generalization of certain subclasses of analytic functionsTadayuki Sekine0Department of Mathemetics Science and Technology, Nihon University, 1-8 Kanda Surugadai, Chiyoda-ku, Tokyo 101, JapanWe introduce the subclass Tj(n,m,α) of analytic functions with negative coefficients by the operator Dn. Coefficient inequalities and distortion theorems of functions in Tj(n,m,α) are determind. Further, distortion theorems for fractional calculus of functions in Tj(n,m,α) are obtained.http://dx.doi.org/10.1155/S0161171287000826analytic functionsnegative coefficientscoefficient inequalitiesdistortion theoremfractional calculus.
spellingShingle Tadayuki Sekine
Generalization of certain subclasses of analytic functions
International Journal of Mathematics and Mathematical Sciences
analytic functions
negative coefficients
coefficient inequalities
distortion theorem
fractional calculus.
title Generalization of certain subclasses of analytic functions
title_full Generalization of certain subclasses of analytic functions
title_fullStr Generalization of certain subclasses of analytic functions
title_full_unstemmed Generalization of certain subclasses of analytic functions
title_short Generalization of certain subclasses of analytic functions
title_sort generalization of certain subclasses of analytic functions
topic analytic functions
negative coefficients
coefficient inequalities
distortion theorem
fractional calculus.
url http://dx.doi.org/10.1155/S0161171287000826
work_keys_str_mv AT tadayukisekine generalizationofcertainsubclassesofanalyticfunctions